Third-Generation

all security test failed 100% solution!

Author: gsmfaster // Category: nokia Many people posted in this forum about security test failed !

we know that
when come security test failed

solution
1. super sd auth or pmm auth than write good or modified pm ( must need pm 1 & 309)
or, 2. sd repair super sd auth or pmm auth than write good or modified pm ( must need pm 1 & 309)


yes! we have this solution
1. first backup rpl ( go > imei and security tab > imei rebuild > backup rpl)
2. erase old pm ( go > pm tab > erase )
3. Reset npc data ( go> imei and security tab> reset NPC data)( must backup rpl before do this)
4. Erase pm again (go > pm tab > erase )
5.Write rpl from backup ( go > imei and security tab > imei rebuild > restore imei)
6. go pm tab > super sd auth or pmm auth > than write good or modified pm ( must need pm 1 & 309)

7. erase pm again

8. Recover CERT ( go>imei and security tab> imei rebuild > recover cert)
9. give full factory reset


your phone must come back from security test failed
it is 100% tasted by me.

 

This is the repair guide on how to fix Nokia 5800 xpressmusic Mouthpiece problem issues such no audio sounds can be heard on the receiver speaker.
MOBILE,

Nokia 5800 Xpresmusic Insert SIM card solution - this is a guide on how to fix 5800 Xpresmusic Insert SIM card problem issues.

This is a repair guide on repairing Nokia 5800 xpressmusic touchscreen malfunction or failure.
Just follow and observe the tracing spots indicated on the picture.

Here's a guide on how to fix Nokia 5800 xpressmusic Display problem such as , white screen, blue screen, no display and other display problem issues on the mobile phone handset.

here are some hints on nokia mobile phone hardware repairs. This repair guides covers the following hardware problems related issue.


5800 Xpressmusic LCD Screen Display Problem

Nokia 5800 XpressMusic Touchscreen problem

Nokia 5800 XpressMusic Insert SIM solution

Nokia 5800 XpressMusic mouthpiece microphone problem

Nokia 5800 XpressMusic Digi Mic Knopfler

Nokia 5800 XpressMusic Not Charging Repair Guide

Nokia 5800 Xpressmusic Charger Not Supported Repair

Nokia 5800 Ringtone Buzzer, Audio IHF Speaker Repair

 here's a repair solution on Nokia 5800 xpressmusic not charging problem issues, Its a failure of a device that unable to charge up, often times it shows no charging indications on the LCD display.

This repair solution shows a particular component parts that is most commonly causes and  shows  charger not supported on the LCd display.

 This solution is a guide on how to fix the Nokia 5800 xpressmusic IHF speaker problem. A common hardware failure that NO Audio sounds can be heard over the speaker.

 Here's the solution to repair the Camera switch, Camera focus, slider lock, volume up and volume down key switches on Nokia 5800 Xpressmusic when  damaged and failed to respond when press.
This solution shows the location of the particular ic component that might get damaged when  all of the above side key switches will unable to function.




The slider lock switch, volume down control button switch and the camera button switch is connected with an ESD-EMI filter chip ( crystal glass IC ) marked number 1 on the picture above before it feeds to the I/O expander chip which is marked in number 2. The volume up control switch is connected directly to input and output expander chip, so there's no need to touch the ESD-EMI filter chip if only the volume up control button is not working. If all of the four side keys is not working you can then both work on the I/O expander chip. The SEND/CALL, END/CANCEL and application launcher keys were also connected on the ESD-EMI filter chip and so on the I/O expander chip. You may then check and replace both of the said IC chip if all the keys is not working or not responding.
.

This solution shows the exact location where to apply a jumper wire as an alternative way to repair a damage ON and OFF power switch key line paths on Nokia 5800. This solution will help to fix the phone that unable to power up because of a damaged and cut power way tracks.


The jumper spot is located near the flash cable pin out of Nokia 5800 xpressmusic rear PCB board. You can apply a tiny jumper wire on that location through to the bottom terminal of the ON/OFF power switch key.

If you are looking for the connection line paths of the Nokia 2720 fold volume up and volume down control button switch, here we show the complete circuit connection of the said two volume control button switches.
This solution is a big help especially for a damaged or already lifted solder pads of the switches terminals.. or already been replaced a damaged button switch but still it doesn't work and fix the problem.

The solution below shows the connection of the Volume Up and Volume Down button switch of Nokia 2720 fold. Refer to it and use it as your tracing guide to troubleshoot a not working volume button keys.




 The two button switches share a common connection on its two upper terminals, which is connected directly to the keypad filter IC.
The lower terminals is Voume Up is also associated or connected to 0, 8, 5 and 2 keypad keys. While the Volume Down is connected to *, 7, 4 and 1 keypad keys. So, if also happens that those keypads keys doesn't work, it means that your problem may possibly lies on the filter IC.
You can check and trace this line paths using a multimeter. Then managed to apply a jumper wire if the said connection has been cut-off. Hope this helps in repairing volume control problem on Nokia 2720 fold cell phones.

Here's the Nokia 2720 fold solution for not working buzzer or hands free speaker problem. This solution provides some simple hints on how to fix the buzzer problem.

The Nokia 2720 the buzzer is mounted near the LCD screen displays and also associated with the LCD flex ribbon cable assembly connection. Refer to the solution below and follow some step by step guide on how to fix the buzzer or ringer problem.




Repair hints for not working nokia 2720 fold cell phone ringer speaker problem:
1. Check the flex ribbon cable assemblies for possible damaged, then replace if confirmed faulty.
2. Check the phone loud ringer speaker using a multimeter, or replace with a new one.
3. Check/clean the LCD flex ribbon cable pin connector.
4. Trace the connection from the pin 7 and 10 down to the two 120 ohms resistors near the LITEPLUS IC.
5. Check/replace the two 120 ohms resistors.
6. If the above procedures does not solved the problem, the possible faulty will be on the liteplus IC.

Here's the Nokia 2720 hardware repair solution for not working MIC (microphone) problem. This solution shows the MIC tracks connection line paths., and certain components that holds for 2720 fold nokia mobile phone microphone circuit.

Just refer to the solution below then locate the highlighted components on the PCB board and follow some procedures we provide.




Repair hints for Nokia 2720 fold cell phone microphone problem.
1. Check the microphone for possible damaged using a multimeter, replace if found damaged.
2. Trace its corresponding connection line paths.
3. Check/resolder or replace  all the corresponding connected components such as the capacitors and resistors.
4. If the procedures doesn't fix the problem, the possible faulty is the LITEPLUS IC, re-heat or rework it if necessary.

Here's the basic Nokia 2720 fold solution for LCD screen display problems such as the following like white empty screen, blue screen, garbled or saturated screen, blurry or blur screen  displays and others as long you can hear that the phone is still working, like you can still hear the welcome tone, the keypad tones etc.

This may work if the LCD is not damaged, cracked or broken. For beginners  you may still need an LCD screen replacements for quick and easy technique by just confirming that the problem does not lies on the LCD screen. You may also check the device firmware first., if the firmware is okay then proceed to the given solution below.

Hints for troubleshooting the Nokia 2720 Display problems this may apply on the main LCD screen and the catalina LCD:
Check the flex ribbon cable assemblies for possible damaged.
Try to replace or install a new working LCD screen panel.


 If the LCD and flexible cable confirmed that nothing wrong with it, proceed to the PCB board hardware troubleshooting below. 

The solution below shows the connection line paths of the display data signals from the filter resistors through to the LCD flex pin connector. This is only the brief solution for we start our troubleshooting here.

First check the VIO and VFLASH supply voltages, you can read about 1.8V and 2.8V on that spots of the certain pins or through the capacitors. Then check all the resistors and trace its connection down to the LCD flex connector. This may useful especially when the device suffered wet or water damaged, replace and apply jumper if necessary. If this solution doesn't work, the problem may possibly then lies on the processor IC, it is because the display data signals is feed and comes from through it. A re-hot, re-work or replacement to the CPU IC will only fix the problem.

Okay, there you have it, the basic steps procedure in troubleshooting LCD screen display problem on Nokia 2720 fold. This once again created through by request of our colleagues on our Nokia solution request box.

Here's the Nokia 2720 fold solution for not working earpiece speaker (receiver) problem. This solution provides some step by step procedures on how to fix and diagnose if such ear speaker problem occurred.

In Nokia 2720 fold, the earpiece speaker is mounted on top and near the LCD screen displays. And also been connected and associated with the LCD flex ribbon cable assembly. Just refer to the solution and follow some procedures below. 



Troubleshooting Nokia 2720 fold earpiece speaker problem:
Assuming that this problem is not cause by a firmware, so check and flash update the device first to any latest firmware version available. 
1. Check the earpiece speaker using a multimeter, replace if damaged.
2. Check the Flex ribbon cable wire for possible damaged, replace if necessary.
3. Clean, the LCD pin connector, re-solder if the solder is lifted.
4. Trace the connection line paths of the earpiece speaker from the pin connector down to the bypass capacitors., check or replace also the capacitors.
5. The earpiece audio signals is feed from the LITEPLUS IC, there is a possibility that the problem is cause by this chip, reheat or rework it then replace if necessary.

That's it! Enjoy.

Here's the solution for Nokia 2720 fold Power On Off switch or END keypad problem,. This solution may only help fix the  2720 fold Nokia Mobile Phones, if the said device shows charging indications when the phone battery charger is plug-in but it doesn't turn the device ON when the power key is pressed.

To fix this problem, you may first check the keypad interface and keypad membrane for possible oxidation build up, clean or replace it if necessary, it might also cause the navigation and numeric keypad not to work.
Refer to this solution below if the basic procedures above doesn't fix the problem.



Just trace the connection of the power key inner core to the capacitor and the ESD protection resistor then mend a jumper wire on it to reconnect if the said line paths is open or cut-off. The outer core is connected to ground lines, so check it as well. Replace those components also those components if necessary. If the connection paths and those components is okay, but still the 2720 fold don't turn ON, the possible problem may lies on the connection to the LITEPLUS IC. Reworking it and tracing the power key paths on the solder ball bumps C2 will only fix the problem.

Here's the Nokia 2720 fold solution for insert sim card problems. You may first ensure that the problem is on the device and not on the sim card, you only need to by a new prepaid sim cards if its already been damaged.
This solution may only help fix if the phone does not detect any kind of sim cards inserted to it.

The solution below shows the connection line paths of the of nokia 2720 fold mobile phone sim cards circuit, for easy check up and repair procedures.


Here's how the way we  fix the Nokia 2720 fold insert sim card problem:
1. Clean the SIM card Pin connectors.
2. Check and read the SIM card supply voltage and ground pins, replace the  SMD capacitors.
3. Replace the SIM Card filter IC.
5. If all of the above doesn't solved the problem,. Reworking the LITEPLUS IC is the last option. Replace if necessary.
Thats it! Hope this help.. enjoy! ..........................................................................For More Information Continue Visit on

Here's the Nokia 2720 fold solution for not working keypads problem. This solution provides the connection line paths of the keypad interface.

This may only works for hardware failure, so you may first try to ensure that the device firmware is okay and already calibrated.  Clean the whole keypad interface including the keypad membrane if an oxidation build up found. Check also the silicone rubber keypads of its still in good condition.
You may refer to the given solution below if the above basic procedures does not solved the problem. and follow some step by step procedures that we prepared.

In this solution the POWER/END key is not included but we also have prepared a jumper solution for it., this may only works for numeric and navigation keys such as the following: 1, 2 ,3 ,4 5, 6, 7, 8, 9, *, 0, #, UP, DOWN, LEFT, RIGHT, Soft Left, Soft right, Select/Action and Send.



Repair hints for Nokia 2720 fold mobile phone keypad problem:
If there is only one or two keypad keys isn't responding, you may only suspects that the problem may lies in an open line paths. Just trace the connection of that said keys, then managed to establish a jumper on it.
If more than three or four keypad keys doesn't work, you may suspect that the problem lies on a open connection line paths or either the keypad filter IC. Check and trace the connection of those keypad keys and then replace the keypad filter IC if the connection paths is okay.

Here's the Nokia 2720 fold solution for not charging problem such as "charger no response" it means that shows no charging indication when the battery charger is plug-in.

The solution below shows the Nokia 2720 fold charging protection circuit, that may need to check then replace if found damaged.




Repair hints for Nokia 2720 fold Not Charging problem:
Check the charging pin connector for possible damaged, ensure that the pins were not bended, clean it if some oxidation build up found. Re-solder if necessary.
Then check and replace the fuse and the chip diode if damaged.

Here's a full Nokia 2730c  MMC memory card problem solution that can be used to fix and repair nokia 2730c microSD memory card problems such as memory card not detected or memory card corrupted.

In some cases solving the MMC problem by only replacing the MMC controller chip might not work or does not solved the problem.This solution shows the MMC memory card circuit including the memory card transceiver chip voltage supply line paths for further MMC hardware troubleshooting on Nokia 2730c.
 IF these said supply voltages were not present or being cut-off this will also result to MMC problem.


You may need to check all those corresponding supply voltage line paths before attempting to rework or replace the MMC transceiver IC.

Here's the solution for a water damaged Nokia 2730c that shows charging indications but unable to turns on when pressing the power key button.

The solution below shows the line paths of the Nokia 2730c On -OFF key connections down to the keypad filter chip. You may refer to the below solution for tracing the on-of line paths and mend an alternative jumper solution on it.


The solution above shows that the power on -off key is being connected to the keypad filter IC. However, there is an open test spots somewhere located near on the keypad filter chip where you can directly apply the jumper wire without replacing the keypad filter IC.

Here's a Nokia 2730c  LCD Display Problem Solution with jumper ways and connection tracks, that may help solve display problems like, blank or empty screen display, blue screen display, white blinking screen display, saturated or garbled screen display.

If encountered such display problem on Nokia 2730c, you must first try to install a new replacement LCD screen module and update the device flash firmware. Ensure also that the LCD pin connector  is not damaged or lifted.




The above solution shows the LCD display connection line paths from the LCD pin connector to a corresponding resistor components near the application processor chip. These resistors has a resistance value of 33 ohms each. You must also check and then replace this resistors if found damaged to obtain the display signal data that feeds to the LCD Screen module. The LCD data signals were generated from the CPU chip and then feeds to these resistors before it goes through to the LCD screen.

If there is an open line paths found just apply a jumper wire on it to reconnect the cut or open line paths.

Here's a solution that may help fix Nokia 2730c LCD display backlight problem. If the display problem goes dark it indicates that the LCD backlight LED's were not working.

This solution below shows the Nokia 2730c LCD display backlight components that holds and control for the LCD screen display backlight to glow. If one of these components may become faulty due to wet or water damaged it will result to LCD's back light failure.


You may need to trace the connection line tracks, supply voltages and check some of the backlight LED driver components shown on the solution above. You may start to check the highlighted components for it is more prone to be easily damaged when a short circuit occurred. Check and replace if already found damaged.

Here's a complete Nokia 2730c  keypad solution with keypad connection jumper ways and tracks that can be used to repair a damaged Nokia 2730 classic keypad connection.

This solution can be used to fix if any certain keys that is not working or responding.
Just see the solution below for it shows the complete line paths and connection of the Nokia 2730c.




The above solution also shows the Keypad Filter IC solder bumps connection, you can used it when having trouble finding the Nokia 2730c keypad filter IC replacement. 

Here's a solution to fix Nokia 5000 Signal problem related issues like no signal being intercepts, show a dropping signal on the display. This solution simply shows the location of the components and tests spots to check with when trying to fix nokia 5000 signal loss.





The solution picture guide indicated with numbers are the test spots and components might possibly get damaged if the signal loss occurs. In most  cases the RF signal is loss or become weak if the RF IC and the RF power amplifier IC (PA IC) possibly damaged. You can check the corresponding power supply voltage first before attempting to rework or replace it with a new replacement spare component parts.

If you try to fix nokia 5000 display problem issues like white screen, blue screen, dark or black screen other related display problems, this solution may help on solving those hardware failures above, if the said damaged device already installed new lcd display replacement on it but the problem still exists and nothing happens.




This solution guide will show you the pin configuration of the LCD display connector of where and which particular components it is being connected for an easy tracing procedure method.
The LCD display circuit comes with a display driver IC, which is a good  spot to start to check, test, rework and replace.

Here's the nokia 5000 charging problem repair solution guide.
The picture shows the particular components may cause the problem if damaged.
The is also shows the charger voltage line paths started from the charging pin connector to the fuse, coil, diode and capacitor and down deeper to the power supply IC's corresponding terminals, in which the voltage feeds through to the battery terminal connector.

Here's the solution which help to repair Nokia 5000 Mouthpiece microphone failure problem.
This manual or repair guide shows the microphone's components connection on the main PCB board assembly (printed circuit board). Including the terminal connection within the inner solder ball terminals of the power IC.






Repair Tips and procedure: 
1. check the mouthpiece microphone, replace if found damaged
2. check the microphone's terminal pads free from dirt and corrosion.
3. check the two filter coils, replace if found open or damaged.
4. check replace the capacitors near the power supply IC.
5. trace the line paths and if found open or cut, apply a tiniest magnetic jumper wire on it , its a recycling method but anyway it is very useful.

Note:  It need expertise on this next procedures, if the solutions above does not solve the problem.
doing this process without related experience might end up killing the phone.
1. reflow or reheat the power IC using a Hot Air Gun, with proper controlled heat temperature.
2. remove the power IC, check each line paths indicated on the repair picture solution to each corresponding connected components.
3. Rework or reball the power IC's solder balls.


We personally tried and tested this solution and serve as our guide
for the following questions we search with.
5000 Mouthpiece problem
5000 Mic Problem
5000 Microphone Problem
5000 Mic Ways
5000 Microphones Ways
5000 Mic Jumpers
5000 Microphone Jumpers

 A repair guide solutions covers to repair Nokia 5000,5000d keypad backlight LED problem.
This repair guide shows the particular locations of the components that might possibly damaged when the Keypad backlight LED failed to light up.




The LED driver ic is mounted near at the bottom side of the PCB board assembly. This chip drive and sustain the voltage and current to light the keypad backlight  LED's, if the supply voltage feeds from the cell phone battery is cut or missing this chip will unable to function.
The the output voltage of the led driver IC is connected to pin 12 (positive) and pin 13 (negative) of the keypad  interface connector. 

Here's the solution guide to fix Nokia 5000 keypad malfunction. In this picture guide its shows the keypads tracing line paths (keypad ways). This repair solution may help if the keypads membrane is okay but the keypads keys does not work or failed to initiate.
This also shows the 5000 keypad IC jumper ways, for temporarily test procedure before replacing with a new keypad filter IC spare parts. Just follow the colored lines on the picture  to trace each corresponding lines across the keypad pin connector socket on the main PCB board.




The Nokia 5000 power ON-OFF switch key line is connected to the pin number 9, while the 5000 keypad LED backlight is on pin 12 and 13, then the rest left for ground lines of the keypad pin connector .

If Nokia 5000 will unable to power up when switching it ON even the battery is at full charge or it shows charging  indication on the LCD screen display but fails to power up. The problem may happen or occurs if the keypad membrane is corroded or the power ON-OFF switch line is cut or damaged due to water damaged or suffered from being accidentally dropped. This solution will help to trace the line paths across from the key switch pad to the particular components of which it is being connected.

Here's a  repair guide, a simple solution to fix and repair Nokia 5000 , 5000D earpiece speaker problem. this solutions shows the earpiece components connection line paths ( speaker ways), Including the inner connection beneath the terminals of power management IC (power IC).



Repair hints:
 1. Check or replace the earpiece  speaker
2. Check or replace the coils and capacitors.
3. check the line pats to each corresponding component's connections
     from the coils to the speaker terminals.
4. Remove the power IC, check the line pines of ball bumps pin P11 and pin P12, to the coils
5. Rework or reball   the Power IC.



Serve as quick repair guide for the following:
5000 Speaker Problem,
5000 Speaker Ways,
5000 Speaker Jumpers,
5000 Earpiece Problem,
5000 Earpiece Ways
5000 Earpiece Jumpers

Having problem how to solve insert sim card problem on Nokia 5000? no matter how many different SIM card  you've tried to insert on it but it shows and display insert sim card on the LCD screen .
Here's a simple repair tricks to solve that insert sim card hardware related problem on Nokia5000.



The sim card assembly connection is filtered by an IC wll known as SIM card IC (integrated circuit). If the filter will breakdown or damaged it will result to insert sim card problem issues.
The repair solution guide picture above shows the line paths (sim card ways) of the SIM circuit, it includes the filter IC's internal connection between of each solder ball terminals way trough to each corresponding sim card pin connectors of the sim card holder.

Insert Sim card repair hints:
1. check the supply voltage line paths from the VSIM capacitors way trough to the pin connector with
     labeled  VSIM.
2. Remove and replace the SIM card filter IC,
or manage to apply a solder jumper on each corresponding solder ball terminal of the SIM filter IC.
3.  Need expertise in this method if the above does not solve the problem:
  a. Reheat, reflow the power IC.
  b. Remove the power IC and trace each particular sim card lines (see picture above)of the power IC solder balls terminal directly trough to each corresponding SIM card pin connector. if found cut manage to apply tiniest magnetic jumper wire on it.
  c. Reball the power IC's solder ball terminals.

An lcd display modules will result to a blank or black screen display when an LED backlight failed to light up..
Here' the repair guide solutions to repair Nokia 5000,5000d LCD display backlight LED failure. This repair guide shows the particular locations of the components that might possibly damaged when the LCD display backlight LED will unable to light up.




An led driver ic located at the bottom side of the PCB board assembly which is driving the voltage and current to light the LCD display backlight  LED's, if the supply voltage feeds from the cell phone battery is cut or missing this chip will unable to function.
The the output voltage of the led driver IC is connected to pin 3 (positive) and pin 6 (negative) of the LCD display interface connector.

Here's the local mode and test mode activated problem on Nokia 5000.
This solution show the chip resistor that is connected to the cell phone battery terminal BSI line this resistor might get damaged and needs to replace when a local mode or test mode shows when the powering up the said nokia 5000.


Some test mode and local mode problem due to a weak cell phone battery itself and also the battery terminal BSI lines being corroded, so make sure to consider those area is properly check and being tested. 

Here's a solution that solved, fix and repair Nokia 5030 Ringer Speaker no sounds output problem.
This solution shows the components that might also possibly damaged if the speaker does not have a sounds output. After ensuring that the loud speaker module is working okay, you may also check or by then replace the components showed on the solution below.



The Ringer audio sounds signal is feeds from the UEM IC, therefore for further troubleshooting you may also try to rework the UEM IC if all of those components above including the loud speaker is working well.

Here's a solution to solved Nokia 5030 xpressradio Display problems such as White Screen, Blue scree, blank screen, black screen and any related display failures.
This solution shows the display line tracks connection from a certain components to the LCD pin connector.


The display data signals is feed from the application processor then each line is filtered by resistor before it gets through to the LCD module.

Having a Charger No Response indications is a sign of a defective battery charger, charging pin connector and some of the components on the PCB Board like the chip fuse is being busted or damaged.
This solution below may possibly help fix and repair Nokia 5030 Charger no response indication. It shows the location of chip fuse on the main pcb board that needs to check and replace when a charger no response occurred.


The chip diode may also damaged and cause short circuit, a shorted diode make the chip fuse blown again, replace it if found shorted. 

If ever tried to repair a damaged Nokia 5220 mic failure, this solution can be used as a quick guide to which and what components needs to be check or replace.
The solution below shows the microphone circuits including its voltage supply and audio data signal line paths from the Power and Audio IC through to the Digital microphone module.




Before trying to remove and replace the DIGI MIC module check and trace its corresponding line paths and connected components such as the Resistors, there are three resistors connected being connected in the circuit which has the resistance value of 100 ohms each.
You may also check the voltage supply line paths, if the voltage is not present the microphone will not work.
If already tied installing a new replacement microphone and ensuring that the connection tracks were okay and also the  three resistors were bot fine but the problem still exists, there is the possibility that the problem lies on the audio IC. Reworking it might possibly solve and fix the Nokia 5220 microphone problem.

If ever encountered a Nokia 5220 Display problem issues like white screen, blank screen, blue screen,saturated and garbled display problems.The very first thing you should do is to replace the LCD screen module, restore or update the device flash firmware. But after doing this procedures the display problem still exists and nothing happens.

This solution below might possibly help solved the problem for it shows the display data signal line paths from the processor chip through to the LCD pin connector for an ease of troubleshooting.





Each of the display data signals which feed from the application processor chip is filtered by a 330 ohms resistors before it reach up through to the LCD screen display module. You may start to check, trace from this components and way up to LCD pin connector.

Here's the solution for Nokia 5220 Xpressmusic Ringer and Integrated Hands Free (IHF) Speaker that No sounds output can be heard on it.
If ever encountered this problem, you need to check the earpiece speaker first if it already busted or damaged.
If the speaker is working okay but still there is no audio sound output can be heard when being activated, you may use this solution below to trace the line paths and check particular components on Nokia 5220 PCB board that holds the IHF speaker circuit. This solution covered for left and right channel speakers connection.



The IHF speaker left and right audio signal is feed from the power and audio IC (AVILMA) then filtered by a non polar capacitors before it feeds to the audio amplifier IC. The audio amplifier chip is the one that boosts or amplify the audio signals to make it sounds louder and better.
The boosted or amplified audio signal is then feeds across to a filter coils, bypass capacitors and an ESD protection resistors before it get through to the IHF Speakers.

 Hints for Troubleshooting:
a) check the earpiece speaker first by using a multimeter.
b) clean the speaker terminals and contact pads.
c) check or replace the filter capacitors, filter coils and resistors if found damaged.
d) check the corresponding line paths of each corresponding connections
e) if all line paths and components is okay: Rework  the audio amplifier IC or replace if it doesn't work.
f) If all of the above is already been done but does not solved the problem, You may then proceed to rework the audio IC.Trace the line paths to each corresponding solder ball bumps that holds for the IHF audio signals before in-placing it back.

If ever encountered a Nokia 5220 Xpressmusic that shows no response or indication on the LCD display
when a good and working charger is being plug-in. This trouble may cause by a damaged charging pin connector or an oxidated charging pin terminal contact pads.
Replacing and or by cleaning it will definitely fix the problem.

In some cases like a wet damaged Nokia 5220 there are certain components that may also get damaged like the charging fuse and or the protection diode. The solution below shows where this certain components being mounted or located on Nokia 5220 PCB board.



You may check those components showed on the solution above and replace if found damaged.
You may start to check the fuse if already busted or cut-off, then down to the filter coil and the chip diode.
A shorted diode may cause the fuse to blown or breakdown. Replace it if its already shorted. 

This is the solution for a damaged Nokia 5220 that result to keypads malfunction or keys not working. This solution shows the complete connection line paths of the keypad filter IC and through to the kepad flex Pin connector.
This solution also shows and includes the Power ON OFF key line paths.

There are two Keypad ESD-EMI filter is being used in the circuit. The keypad line paths used nine input and output filtering lines in the Filter IC while the power ON OFF key also shared in this filter IC.




If trying to replace the keypad filter IC you may also trace and check first each of its corresponding connection line paths, while the Filter IC being removed and just inplaced a new one after ensuring that all the line paths is okay.

The solution below covers for nokia 5220 Xpressmusic Earpiece Speaker Problem that no audio sound can be heard on it. If this happens you may need to check and or replace the Earpiece speaker if found already damaged.
But if the earpiece speaker is working okay but still there is no sound can be heard on during a call is been made, the problem may possibly lies on a faulty certain components that is being connected to it.

The solution below shows the line paths and which particular components needs to be check or replace.





The earpiece audio signal is feeds from the power and audio IC (AVILMA);
Reworking this chip might possibly solve and  fix Nokia 5220 earpiece speaker problem.

This solution can be used as a remedy to repair a damaged power ON-OFF push button switch on Nokia 5320 Xpressmusic., most particularly on a damaged or lifted terminal solder pads on the PCB board. This solution may also only works if the phone shows charging indication when the battery charger is plug-in but unable to TURN ON while pressing the powerswitch button.

Just refer to the solution below and follow some step by step procedures on how to diagnose the power switch problem





Repair hints for Power Switch problem on Nokia 5320 Xpressmusic:
1. Check the power switch assembly, if the assembly is damaged replace the switch.
     Sometimes even if the powerswitch is not not visually damaged, see to it that it still working by using a  
     multimeter
2. For lifted button switch solder terminal pads on the PCB board, manage to re-establish the switch to its original position and bond it perfectly so that it won't easily break. Then manage to reconnect the power switch line paths and the ground connection. If you can see an empty components solder pads just below of it,  you can connect it to that spot. that is also connected to the power switch.
3.  The most harder part on power switch troubleshooting is by removing the  AVILMA IC and trace its connection from the solder ball bump (D9) to the power switch terminal, The rework or reball the AVILMA again. If you get into this level, this may take an extra expertise on soldering techniques. So goodluck! ..........................................................................For More Information Continue Visit on http://gsmworldfree.blogspot.com/ More Use full Information Coming Soon. Wait For More New Information.And Post Your Comments In All Post.Email:ajcellpoint@gmail.com Continue>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

all security test failed 100% solution!

Author: gsmfaster // Category: nokia Many people posted in this forum about security test failed !

we know that
when come security test failed

solution
1. super sd auth or pmm auth than write good or modified pm ( must need pm 1 & 309)
or, 2. sd repair super sd auth or pmm auth than write good or modified pm ( must need pm 1 & 309)


yes! we have this solution
1. first backup rpl ( go > imei and security tab > imei rebuild > backup rpl)
2. erase old pm ( go > pm tab > erase )
3. Reset npc data ( go> imei and security tab> reset NPC data)( must backup rpl before do this)
4. Erase pm again (go > pm tab > erase )
5.Write rpl from backup ( go > imei and security tab > imei rebuild > restore imei)
6. go pm tab > super sd auth or pmm auth > than write good or modified pm ( must need pm 1 & 309)

7. erase pm again

8. Recover CERT ( go>imei and security tab> imei rebuild > recover cert)
9. give full factory reset


your phone must come back from security test failed
it is 100% tasted by me.

 

This is the repair guide on how to fix Nokia 5800 xpressmusic Mouthpiece problem issues such no audio sounds can be heard on the receiver speaker.
MOBILE,

Nokia 5800 Xpresmusic Insert SIM card solution - this is a guide on how to fix 5800 Xpresmusic Insert SIM card problem issues.

This is a repair guide on repairing Nokia 5800 xpressmusic touchscreen malfunction or failure.
Just follow and observe the tracing spots indicated on the picture.

Here's a guide on how to fix Nokia 5800 xpressmusic Display problem such as , white screen, blue screen, no display and other display problem issues on the mobile phone handset.

here are some hints on nokia mobile phone hardware repairs. This repair guides covers the following hardware problems related issue.


5800 Xpressmusic LCD Screen Display Problem

Nokia 5800 XpressMusic Touchscreen problem

Nokia 5800 XpressMusic Insert SIM solution

Nokia 5800 XpressMusic mouthpiece microphone problem

Nokia 5800 XpressMusic Digi Mic Knopfler

Nokia 5800 XpressMusic Not Charging Repair Guide

Nokia 5800 Xpressmusic Charger Not Supported Repair

Nokia 5800 Ringtone Buzzer, Audio IHF Speaker Repair

 here's a repair solution on Nokia 5800 xpressmusic not charging problem issues, Its a failure of a device that unable to charge up, often times it shows no charging indications on the LCD display.

This repair solution shows a particular component parts that is most commonly causes and  shows  charger not supported on the LCd display.

 This solution is a guide on how to fix the Nokia 5800 xpressmusic IHF speaker problem. A common hardware failure that NO Audio sounds can be heard over the speaker.

 Here's the solution to repair the Camera switch, Camera focus, slider lock, volume up and volume down key switches on Nokia 5800 Xpressmusic when  damaged and failed to respond when press.
This solution shows the location of the particular ic component that might get damaged when  all of the above side key switches will unable to function.




The slider lock switch, volume down control button switch and the camera button switch is connected with an ESD-EMI filter chip ( crystal glass IC ) marked number 1 on the picture above before it feeds to the I/O expander chip which is marked in number 2. The volume up control switch is connected directly to input and output expander chip, so there's no need to touch the ESD-EMI filter chip if only the volume up control button is not working. If all of the four side keys is not working you can then both work on the I/O expander chip. The SEND/CALL, END/CANCEL and application launcher keys were also connected on the ESD-EMI filter chip and so on the I/O expander chip. You may then check and replace both of the said IC chip if all the keys is not working or not responding.
.

This solution shows the exact location where to apply a jumper wire as an alternative way to repair a damage ON and OFF power switch key line paths on Nokia 5800. This solution will help to fix the phone that unable to power up because of a damaged and cut power way tracks.


The jumper spot is located near the flash cable pin out of Nokia 5800 xpressmusic rear PCB board. You can apply a tiny jumper wire on that location through to the bottom terminal of the ON/OFF power switch key.

If you are looking for the connection line paths of the Nokia 2720 fold volume up and volume down control button switch, here we show the complete circuit connection of the said two volume control button switches.
This solution is a big help especially for a damaged or already lifted solder pads of the switches terminals.. or already been replaced a damaged button switch but still it doesn't work and fix the problem.

The solution below shows the connection of the Volume Up and Volume Down button switch of Nokia 2720 fold. Refer to it and use it as your tracing guide to troubleshoot a not working volume button keys.




 The two button switches share a common connection on its two upper terminals, which is connected directly to the keypad filter IC.
The lower terminals is Voume Up is also associated or connected to 0, 8, 5 and 2 keypad keys. While the Volume Down is connected to *, 7, 4 and 1 keypad keys. So, if also happens that those keypads keys doesn't work, it means that your problem may possibly lies on the filter IC.
You can check and trace this line paths using a multimeter. Then managed to apply a jumper wire if the said connection has been cut-off. Hope this helps in repairing volume control problem on Nokia 2720 fold cell phones.

Here's the Nokia 2720 fold solution for not working buzzer or hands free speaker problem. This solution provides some simple hints on how to fix the buzzer problem.

The Nokia 2720 the buzzer is mounted near the LCD screen displays and also associated with the LCD flex ribbon cable assembly connection. Refer to the solution below and follow some step by step guide on how to fix the buzzer or ringer problem.




Repair hints for not working nokia 2720 fold cell phone ringer speaker problem:
1. Check the flex ribbon cable assemblies for possible damaged, then replace if confirmed faulty.
2. Check the phone loud ringer speaker using a multimeter, or replace with a new one.
3. Check/clean the LCD flex ribbon cable pin connector.
4. Trace the connection from the pin 7 and 10 down to the two 120 ohms resistors near the LITEPLUS IC.
5. Check/replace the two 120 ohms resistors.
6. If the above procedures does not solved the problem, the possible faulty will be on the liteplus IC.

Here's the Nokia 2720 hardware repair solution for not working MIC (microphone) problem. This solution shows the MIC tracks connection line paths., and certain components that holds for 2720 fold nokia mobile phone microphone circuit.

Just refer to the solution below then locate the highlighted components on the PCB board and follow some procedures we provide.




Repair hints for Nokia 2720 fold cell phone microphone problem.
1. Check the microphone for possible damaged using a multimeter, replace if found damaged.
2. Trace its corresponding connection line paths.
3. Check/resolder or replace  all the corresponding connected components such as the capacitors and resistors.
4. If the procedures doesn't fix the problem, the possible faulty is the LITEPLUS IC, re-heat or rework it if necessary.

Here's the basic Nokia 2720 fold solution for LCD screen display problems such as the following like white empty screen, blue screen, garbled or saturated screen, blurry or blur screen  displays and others as long you can hear that the phone is still working, like you can still hear the welcome tone, the keypad tones etc.

This may work if the LCD is not damaged, cracked or broken. For beginners  you may still need an LCD screen replacements for quick and easy technique by just confirming that the problem does not lies on the LCD screen. You may also check the device firmware first., if the firmware is okay then proceed to the given solution below.

Hints for troubleshooting the Nokia 2720 Display problems this may apply on the main LCD screen and the catalina LCD:
Check the flex ribbon cable assemblies for possible damaged.
Try to replace or install a new working LCD screen panel.


 If the LCD and flexible cable confirmed that nothing wrong with it, proceed to the PCB board hardware troubleshooting below. 

The solution below shows the connection line paths of the display data signals from the filter resistors through to the LCD flex pin connector. This is only the brief solution for we start our troubleshooting here.

First check the VIO and VFLASH supply voltages, you can read about 1.8V and 2.8V on that spots of the certain pins or through the capacitors. Then check all the resistors and trace its connection down to the LCD flex connector. This may useful especially when the device suffered wet or water damaged, replace and apply jumper if necessary. If this solution doesn't work, the problem may possibly then lies on the processor IC, it is because the display data signals is feed and comes from through it. A re-hot, re-work or replacement to the CPU IC will only fix the problem.

Okay, there you have it, the basic steps procedure in troubleshooting LCD screen display problem on Nokia 2720 fold. This once again created through by request of our colleagues on our Nokia solution request box.

Here's the Nokia 2720 fold solution for not working earpiece speaker (receiver) problem. This solution provides some step by step procedures on how to fix and diagnose if such ear speaker problem occurred.

In Nokia 2720 fold, the earpiece speaker is mounted on top and near the LCD screen displays. And also been connected and associated with the LCD flex ribbon cable assembly. Just refer to the solution and follow some procedures below. 



Troubleshooting Nokia 2720 fold earpiece speaker problem:
Assuming that this problem is not cause by a firmware, so check and flash update the device first to any latest firmware version available. 
1. Check the earpiece speaker using a multimeter, replace if damaged.
2. Check the Flex ribbon cable wire for possible damaged, replace if necessary.
3. Clean, the LCD pin connector, re-solder if the solder is lifted.
4. Trace the connection line paths of the earpiece speaker from the pin connector down to the bypass capacitors., check or replace also the capacitors.
5. The earpiece audio signals is feed from the LITEPLUS IC, there is a possibility that the problem is cause by this chip, reheat or rework it then replace if necessary.

That's it! Enjoy.

Here's the solution for Nokia 2720 fold Power On Off switch or END keypad problem,. This solution may only help fix the  2720 fold Nokia Mobile Phones, if the said device shows charging indications when the phone battery charger is plug-in but it doesn't turn the device ON when the power key is pressed.

To fix this problem, you may first check the keypad interface and keypad membrane for possible oxidation build up, clean or replace it if necessary, it might also cause the navigation and numeric keypad not to work.
Refer to this solution below if the basic procedures above doesn't fix the problem.



Just trace the connection of the power key inner core to the capacitor and the ESD protection resistor then mend a jumper wire on it to reconnect if the said line paths is open or cut-off. The outer core is connected to ground lines, so check it as well. Replace those components also those components if necessary. If the connection paths and those components is okay, but still the 2720 fold don't turn ON, the possible problem may lies on the connection to the LITEPLUS IC. Reworking it and tracing the power key paths on the solder ball bumps C2 will only fix the problem.

Here's the Nokia 2720 fold solution for insert sim card problems. You may first ensure that the problem is on the device and not on the sim card, you only need to by a new prepaid sim cards if its already been damaged.
This solution may only help fix if the phone does not detect any kind of sim cards inserted to it.

The solution below shows the connection line paths of the of nokia 2720 fold mobile phone sim cards circuit, for easy check up and repair procedures.


Here's how the way we  fix the Nokia 2720 fold insert sim card problem:
1. Clean the SIM card Pin connectors.
2. Check and read the SIM card supply voltage and ground pins, replace the  SMD capacitors.
3. Replace the SIM Card filter IC.
5. If all of the above doesn't solved the problem,. Reworking the LITEPLUS IC is the last option. Replace if necessary.
Thats it! Hope this help.. enjoy! ..........................................................................For More Information Continue Visit on

Here's the Nokia 2720 fold solution for not working keypads problem. This solution provides the connection line paths of the keypad interface.

This may only works for hardware failure, so you may first try to ensure that the device firmware is okay and already calibrated.  Clean the whole keypad interface including the keypad membrane if an oxidation build up found. Check also the silicone rubber keypads of its still in good condition.
You may refer to the given solution below if the above basic procedures does not solved the problem. and follow some step by step procedures that we prepared.

In this solution the POWER/END key is not included but we also have prepared a jumper solution for it., this may only works for numeric and navigation keys such as the following: 1, 2 ,3 ,4 5, 6, 7, 8, 9, *, 0, #, UP, DOWN, LEFT, RIGHT, Soft Left, Soft right, Select/Action and Send.



Repair hints for Nokia 2720 fold mobile phone keypad problem:
If there is only one or two keypad keys isn't responding, you may only suspects that the problem may lies in an open line paths. Just trace the connection of that said keys, then managed to establish a jumper on it.
If more than three or four keypad keys doesn't work, you may suspect that the problem lies on a open connection line paths or either the keypad filter IC. Check and trace the connection of those keypad keys and then replace the keypad filter IC if the connection paths is okay.

Here's the Nokia 2720 fold solution for not charging problem such as "charger no response" it means that shows no charging indication when the battery charger is plug-in.

The solution below shows the Nokia 2720 fold charging protection circuit, that may need to check then replace if found damaged.




Repair hints for Nokia 2720 fold Not Charging problem:
Check the charging pin connector for possible damaged, ensure that the pins were not bended, clean it if some oxidation build up found. Re-solder if necessary.
Then check and replace the fuse and the chip diode if damaged.

Here's a full Nokia 2730c  MMC memory card problem solution that can be used to fix and repair nokia 2730c microSD memory card problems such as memory card not detected or memory card corrupted.

In some cases solving the MMC problem by only replacing the MMC controller chip might not work or does not solved the problem.This solution shows the MMC memory card circuit including the memory card transceiver chip voltage supply line paths for further MMC hardware troubleshooting on Nokia 2730c.
 IF these said supply voltages were not present or being cut-off this will also result to MMC problem.


You may need to check all those corresponding supply voltage line paths before attempting to rework or replace the MMC transceiver IC.

Here's the solution for a water damaged Nokia 2730c that shows charging indications but unable to turns on when pressing the power key button.

The solution below shows the line paths of the Nokia 2730c On -OFF key connections down to the keypad filter chip. You may refer to the below solution for tracing the on-of line paths and mend an alternative jumper solution on it.


The solution above shows that the power on -off key is being connected to the keypad filter IC. However, there is an open test spots somewhere located near on the keypad filter chip where you can directly apply the jumper wire without replacing the keypad filter IC.

Here's a Nokia 2730c  LCD Display Problem Solution with jumper ways and connection tracks, that may help solve display problems like, blank or empty screen display, blue screen display, white blinking screen display, saturated or garbled screen display.

If encountered such display problem on Nokia 2730c, you must first try to install a new replacement LCD screen module and update the device flash firmware. Ensure also that the LCD pin connector  is not damaged or lifted.




The above solution shows the LCD display connection line paths from the LCD pin connector to a corresponding resistor components near the application processor chip. These resistors has a resistance value of 33 ohms each. You must also check and then replace this resistors if found damaged to obtain the display signal data that feeds to the LCD Screen module. The LCD data signals were generated from the CPU chip and then feeds to these resistors before it goes through to the LCD screen.

If there is an open line paths found just apply a jumper wire on it to reconnect the cut or open line paths.

Here's a solution that may help fix Nokia 2730c LCD display backlight problem. If the display problem goes dark it indicates that the LCD backlight LED's were not working.

This solution below shows the Nokia 2730c LCD display backlight components that holds and control for the LCD screen display backlight to glow. If one of these components may become faulty due to wet or water damaged it will result to LCD's back light failure.


You may need to trace the connection line tracks, supply voltages and check some of the backlight LED driver components shown on the solution above. You may start to check the highlighted components for it is more prone to be easily damaged when a short circuit occurred. Check and replace if already found damaged.

Here's a complete Nokia 2730c  keypad solution with keypad connection jumper ways and tracks that can be used to repair a damaged Nokia 2730 classic keypad connection.

This solution can be used to fix if any certain keys that is not working or responding.
Just see the solution below for it shows the complete line paths and connection of the Nokia 2730c.




The above solution also shows the Keypad Filter IC solder bumps connection, you can used it when having trouble finding the Nokia 2730c keypad filter IC replacement. 

Here's a solution to fix Nokia 5000 Signal problem related issues like no signal being intercepts, show a dropping signal on the display. This solution simply shows the location of the components and tests spots to check with when trying to fix nokia 5000 signal loss.





The solution picture guide indicated with numbers are the test spots and components might possibly get damaged if the signal loss occurs. In most  cases the RF signal is loss or become weak if the RF IC and the RF power amplifier IC (PA IC) possibly damaged. You can check the corresponding power supply voltage first before attempting to rework or replace it with a new replacement spare component parts.

If you try to fix nokia 5000 display problem issues like white screen, blue screen, dark or black screen other related display problems, this solution may help on solving those hardware failures above, if the said damaged device already installed new lcd display replacement on it but the problem still exists and nothing happens.




This solution guide will show you the pin configuration of the LCD display connector of where and which particular components it is being connected for an easy tracing procedure method.
The LCD display circuit comes with a display driver IC, which is a good  spot to start to check, test, rework and replace.

Here's the nokia 5000 charging problem repair solution guide.
The picture shows the particular components may cause the problem if damaged.
The is also shows the charger voltage line paths started from the charging pin connector to the fuse, coil, diode and capacitor and down deeper to the power supply IC's corresponding terminals, in which the voltage feeds through to the battery terminal connector.

Here's the solution which help to repair Nokia 5000 Mouthpiece microphone failure problem.
This manual or repair guide shows the microphone's components connection on the main PCB board assembly (printed circuit board). Including the terminal connection within the inner solder ball terminals of the power IC.






Repair Tips and procedure: 
1. check the mouthpiece microphone, replace if found damaged
2. check the microphone's terminal pads free from dirt and corrosion.
3. check the two filter coils, replace if found open or damaged.
4. check replace the capacitors near the power supply IC.
5. trace the line paths and if found open or cut, apply a tiniest magnetic jumper wire on it , its a recycling method but anyway it is very useful.

Note:  It need expertise on this next procedures, if the solutions above does not solve the problem.
doing this process without related experience might end up killing the phone.
1. reflow or reheat the power IC using a Hot Air Gun, with proper controlled heat temperature.
2. remove the power IC, check each line paths indicated on the repair picture solution to each corresponding connected components.
3. Rework or reball the power IC's solder balls.


We personally tried and tested this solution and serve as our guide
for the following questions we search with.
5000 Mouthpiece problem
5000 Mic Problem
5000 Microphone Problem
5000 Mic Ways
5000 Microphones Ways
5000 Mic Jumpers
5000 Microphone Jumpers

 A repair guide solutions covers to repair Nokia 5000,5000d keypad backlight LED problem.
This repair guide shows the particular locations of the components that might possibly damaged when the Keypad backlight LED failed to light up.




The LED driver ic is mounted near at the bottom side of the PCB board assembly. This chip drive and sustain the voltage and current to light the keypad backlight  LED's, if the supply voltage feeds from the cell phone battery is cut or missing this chip will unable to function.
The the output voltage of the led driver IC is connected to pin 12 (positive) and pin 13 (negative) of the keypad  interface connector. 

Here's the solution guide to fix Nokia 5000 keypad malfunction. In this picture guide its shows the keypads tracing line paths (keypad ways). This repair solution may help if the keypads membrane is okay but the keypads keys does not work or failed to initiate.
This also shows the 5000 keypad IC jumper ways, for temporarily test procedure before replacing with a new keypad filter IC spare parts. Just follow the colored lines on the picture  to trace each corresponding lines across the keypad pin connector socket on the main PCB board.




The Nokia 5000 power ON-OFF switch key line is connected to the pin number 9, while the 5000 keypad LED backlight is on pin 12 and 13, then the rest left for ground lines of the keypad pin connector .

If Nokia 5000 will unable to power up when switching it ON even the battery is at full charge or it shows charging  indication on the LCD screen display but fails to power up. The problem may happen or occurs if the keypad membrane is corroded or the power ON-OFF switch line is cut or damaged due to water damaged or suffered from being accidentally dropped. This solution will help to trace the line paths across from the key switch pad to the particular components of which it is being connected.

Here's a  repair guide, a simple solution to fix and repair Nokia 5000 , 5000D earpiece speaker problem. this solutions shows the earpiece components connection line paths ( speaker ways), Including the inner connection beneath the terminals of power management IC (power IC).



Repair hints:
 1. Check or replace the earpiece  speaker
2. Check or replace the coils and capacitors.
3. check the line pats to each corresponding component's connections
     from the coils to the speaker terminals.
4. Remove the power IC, check the line pines of ball bumps pin P11 and pin P12, to the coils
5. Rework or reball   the Power IC.



Serve as quick repair guide for the following:
5000 Speaker Problem,
5000 Speaker Ways,
5000 Speaker Jumpers,
5000 Earpiece Problem,
5000 Earpiece Ways
5000 Earpiece Jumpers

Having problem how to solve insert sim card problem on Nokia 5000? no matter how many different SIM card  you've tried to insert on it but it shows and display insert sim card on the LCD screen .
Here's a simple repair tricks to solve that insert sim card hardware related problem on Nokia5000.



The sim card assembly connection is filtered by an IC wll known as SIM card IC (integrated circuit). If the filter will breakdown or damaged it will result to insert sim card problem issues.
The repair solution guide picture above shows the line paths (sim card ways) of the SIM circuit, it includes the filter IC's internal connection between of each solder ball terminals way trough to each corresponding sim card pin connectors of the sim card holder.

Insert Sim card repair hints:
1. check the supply voltage line paths from the VSIM capacitors way trough to the pin connector with
     labeled  VSIM.
2. Remove and replace the SIM card filter IC,
or manage to apply a solder jumper on each corresponding solder ball terminal of the SIM filter IC.
3.  Need expertise in this method if the above does not solve the problem:
  a. Reheat, reflow the power IC.
  b. Remove the power IC and trace each particular sim card lines (see picture above)of the power IC solder balls terminal directly trough to each corresponding SIM card pin connector. if found cut manage to apply tiniest magnetic jumper wire on it.
  c. Reball the power IC's solder ball terminals.

An lcd display modules will result to a blank or black screen display when an LED backlight failed to light up..
Here' the repair guide solutions to repair Nokia 5000,5000d LCD display backlight LED failure. This repair guide shows the particular locations of the components that might possibly damaged when the LCD display backlight LED will unable to light up.




An led driver ic located at the bottom side of the PCB board assembly which is driving the voltage and current to light the LCD display backlight  LED's, if the supply voltage feeds from the cell phone battery is cut or missing this chip will unable to function.
The the output voltage of the led driver IC is connected to pin 3 (positive) and pin 6 (negative) of the LCD display interface connector.

Here's the local mode and test mode activated problem on Nokia 5000.
This solution show the chip resistor that is connected to the cell phone battery terminal BSI line this resistor might get damaged and needs to replace when a local mode or test mode shows when the powering up the said nokia 5000.


Some test mode and local mode problem due to a weak cell phone battery itself and also the battery terminal BSI lines being corroded, so make sure to consider those area is properly check and being tested. 

Here's a solution that solved, fix and repair Nokia 5030 Ringer Speaker no sounds output problem.
This solution shows the components that might also possibly damaged if the speaker does not have a sounds output. After ensuring that the loud speaker module is working okay, you may also check or by then replace the components showed on the solution below.



The Ringer audio sounds signal is feeds from the UEM IC, therefore for further troubleshooting you may also try to rework the UEM IC if all of those components above including the loud speaker is working well.

Here's a solution to solved Nokia 5030 xpressradio Display problems such as White Screen, Blue scree, blank screen, black screen and any related display failures.
This solution shows the display line tracks connection from a certain components to the LCD pin connector.


The display data signals is feed from the application processor then each line is filtered by resistor before it gets through to the LCD module.

Having a Charger No Response indications is a sign of a defective battery charger, charging pin connector and some of the components on the PCB Board like the chip fuse is being busted or damaged.
This solution below may possibly help fix and repair Nokia 5030 Charger no response indication. It shows the location of chip fuse on the main pcb board that needs to check and replace when a charger no response occurred.


The chip diode may also damaged and cause short circuit, a shorted diode make the chip fuse blown again, replace it if found shorted. 

If ever tried to repair a damaged Nokia 5220 mic failure, this solution can be used as a quick guide to which and what components needs to be check or replace.
The solution below shows the microphone circuits including its voltage supply and audio data signal line paths from the Power and Audio IC through to the Digital microphone module.




Before trying to remove and replace the DIGI MIC module check and trace its corresponding line paths and connected components such as the Resistors, there are three resistors connected being connected in the circuit which has the resistance value of 100 ohms each.
You may also check the voltage supply line paths, if the voltage is not present the microphone will not work.
If already tied installing a new replacement microphone and ensuring that the connection tracks were okay and also the  three resistors were bot fine but the problem still exists, there is the possibility that the problem lies on the audio IC. Reworking it might possibly solve and fix the Nokia 5220 microphone problem.

If ever encountered a Nokia 5220 Display problem issues like white screen, blank screen, blue screen,saturated and garbled display problems.The very first thing you should do is to replace the LCD screen module, restore or update the device flash firmware. But after doing this procedures the display problem still exists and nothing happens.

This solution below might possibly help solved the problem for it shows the display data signal line paths from the processor chip through to the LCD pin connector for an ease of troubleshooting.





Each of the display data signals which feed from the application processor chip is filtered by a 330 ohms resistors before it reach up through to the LCD screen display module. You may start to check, trace from this components and way up to LCD pin connector.

Here's the solution for Nokia 5220 Xpressmusic Ringer and Integrated Hands Free (IHF) Speaker that No sounds output can be heard on it.
If ever encountered this problem, you need to check the earpiece speaker first if it already busted or damaged.
If the speaker is working okay but still there is no audio sound output can be heard when being activated, you may use this solution below to trace the line paths and check particular components on Nokia 5220 PCB board that holds the IHF speaker circuit. This solution covered for left and right channel speakers connection.



The IHF speaker left and right audio signal is feed from the power and audio IC (AVILMA) then filtered by a non polar capacitors before it feeds to the audio amplifier IC. The audio amplifier chip is the one that boosts or amplify the audio signals to make it sounds louder and better.
The boosted or amplified audio signal is then feeds across to a filter coils, bypass capacitors and an ESD protection resistors before it get through to the IHF Speakers.

 Hints for Troubleshooting:
a) check the earpiece speaker first by using a multimeter.
b) clean the speaker terminals and contact pads.
c) check or replace the filter capacitors, filter coils and resistors if found damaged.
d) check the corresponding line paths of each corresponding connections
e) if all line paths and components is okay: Rework  the audio amplifier IC or replace if it doesn't work.
f) If all of the above is already been done but does not solved the problem, You may then proceed to rework the audio IC.Trace the line paths to each corresponding solder ball bumps that holds for the IHF audio signals before in-placing it back.

If ever encountered a Nokia 5220 Xpressmusic that shows no response or indication on the LCD display
when a good and working charger is being plug-in. This trouble may cause by a damaged charging pin connector or an oxidated charging pin terminal contact pads.
Replacing and or by cleaning it will definitely fix the problem.

In some cases like a wet damaged Nokia 5220 there are certain components that may also get damaged like the charging fuse and or the protection diode. The solution below shows where this certain components being mounted or located on Nokia 5220 PCB board.



You may check those components showed on the solution above and replace if found damaged.
You may start to check the fuse if already busted or cut-off, then down to the filter coil and the chip diode.
A shorted diode may cause the fuse to blown or breakdown. Replace it if its already shorted. 

This is the solution for a damaged Nokia 5220 that result to keypads malfunction or keys not working. This solution shows the complete connection line paths of the keypad filter IC and through to the kepad flex Pin connector.
This solution also shows and includes the Power ON OFF key line paths.

There are two Keypad ESD-EMI filter is being used in the circuit. The keypad line paths used nine input and output filtering lines in the Filter IC while the power ON OFF key also shared in this filter IC.




If trying to replace the keypad filter IC you may also trace and check first each of its corresponding connection line paths, while the Filter IC being removed and just inplaced a new one after ensuring that all the line paths is okay.

The solution below covers for nokia 5220 Xpressmusic Earpiece Speaker Problem that no audio sound can be heard on it. If this happens you may need to check and or replace the Earpiece speaker if found already damaged.
But if the earpiece speaker is working okay but still there is no sound can be heard on during a call is been made, the problem may possibly lies on a faulty certain components that is being connected to it.

The solution below shows the line paths and which particular components needs to be check or replace.





The earpiece audio signal is feeds from the power and audio IC (AVILMA);
Reworking this chip might possibly solve and  fix Nokia 5220 earpiece speaker problem.

This solution can be used as a remedy to repair a damaged power ON-OFF push button switch on Nokia 5320 Xpressmusic., most particularly on a damaged or lifted terminal solder pads on the PCB board. This solution may also only works if the phone shows charging indication when the battery charger is plug-in but unable to TURN ON while pressing the powerswitch button.

Just refer to the solution below and follow some step by step procedures on how to diagnose the power switch problem





Repair hints for Power Switch problem on Nokia 5320 Xpressmusic:
1. Check the power switch assembly, if the assembly is damaged replace the switch.
     Sometimes even if the powerswitch is not not visually damaged, see to it that it still working by using a  
     multimeter
2. For lifted button switch solder terminal pads on the PCB board, manage to re-establish the switch to its original position and bond it perfectly so that it won't easily break. Then manage to reconnect the power switch line paths and the ground connection. If you can see an empty components solder pads just below of it,  you can connect it to that spot. that is also connected to the power switch.
3.  The most harder part on power switch troubleshooting is by removing the  AVILMA IC and trace its connection from the solder ball bump (D9) to the power switch terminal, The rework or reball the AVILMA again. If you get into this level, this may take an extra expertise on soldering techniques. So goodluck! ..........................................................................For More Information Continue Visit on http://gsmworldfree.blogspot.com/ More Use full Information Coming Soon. Wait For More New Information.And Post Your Comments In All Post.Email:ajcellpoint@gmail.com Continue>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>