Nokia 1202 Mic Solution

Nokia 1202 Mic Solution

Nokia 1202,1203,1661,1662,5030 Full Mic Tracks

Nokia C2-03 Full Light Track

Nokia C2-03 Full Light Track

Nokia C2-03 Light Solution

Nokia C2-03 Light Solution

Nokia C2-05 ringer solution

Nokia C2-05  ringer solution
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    Nokia C2-05  ringer solution by GAURAV-MOBILE

Nokia C2-03 On/Off Ways

NOKIA C2-02,C2-03 ON/OFF WAYS 

Nokia C2-00 Headfone Solution

Nokia C2-00 Headphone Tracks
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Nokia 100 Insert Sim 2nd hot Solution

Nokia 100 Insert Sim
Nokia 100 Sim Card Not Working




Nokia 100 Insert Sim 2nd HOT Solution by GAURAV-MOBILE

Nokia 101 Memory Card Solution

Nokia 101 Memory Card Solution

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Nokia 101 MMC SolutionNokia 101 MMC Jack Tracks

Nokia 100 Display Tracks Solution

Nokia 100 Display Tracks 
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                    Nokia X1-01 On/Off Ways Jumper Solution

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             NOKIA 100,101 WHITE DISPLAY SOLUTION

 CHECK ALL TRACKS AND COMPONENTS 

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              NOKIA C2-00 WHITE DISPLAY SOLUTION

CHECK ALL TRACKS CAREFULLY . IF ALL TRACK ARE OK THEN CHECK COMPONENTS .

nokia c2-00 light solution all in one page

                        TRY THIS 100% OK SOLUTION

BEFORE CHANGING ANY PART OF LIGHT SECTION ( LIKE TRANSISTOR ,COIL etc ) CHECK ALL TRACKS SHOW ON PIC .

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                   NOKIA E7 FAKE CHARGING SOLUTION

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                        NOKIA 1202 RINGER SOLUTION

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How to fix Nokia C2-03 White screen and other display problems such as blue screen, blank or empty screens.
If you try to fix firmware problem, simply flash the phone to it's original firmware version. The firmware version for Nokia C2-03 is RM-702.

If you do have hardware problem, follow the simple hints below.
1) Check the flex and LCD pin to pin connections, ensure that it is properly in good contact. A weak or loosen contacts will cause the display problem.
2) Check the LCD screen for possible damaged or cracked. If you ain't sure better have a extra LCD at hand just for a quick test.
3) Check the flex ribbon cable for possible damaged. Since Nokia C2-03 is  a slider phone, the possibility of display problem is cause by flex failure.
4) If both the flex and LCD were already confirmed working and okay. You may then proceed in troubleshooting certain components on the Nokia C2-03 PCB board.
5) See the solution below, check the highlighted components surrounding, clean it if there is an oxidation spotted.

View larger image here.
6) Check each of the display filter components, do rework, resolder or replace it.
This solution may also works on Nokia C2-06 and Nokia C2-08 dual SIM card phones, because both are the same as of Nokia C2-03 PCB board.

Nokia 1616 white display solution 1000%

NOKIA 1616 WHITE DISPLAY SOLUTION

 There are two LCD voltages that feeds to the LCD module, the 1.8 volts Dc which is in color pink line and the 2.8 volts which is in green line.  The other four which are the display data signals.
This guide is useful when the display data filter coils and resistors already been replaced but the problem still exists. You can trace all of those corresponding line paths when the time that you need to remove, rework and even trying to replace a new IC. 

NOKIA 1616 INSERT SIM SOLUTIION

Nokia 1800 and Nokia 1616 Sim card circuit connection layout

The Sim card circuit of Nokia 1616 and Nokia 1800 used an  EMI filter chip for the circuit protection.
This EMI filter IC can be damaged if an excessive electromagnetic interference or electrostatic discharge interfere with the circuit. The Vsim which is the voltage being supplied to the sim card to make it work also cause the problem if being cut or damaged, this voltage range from 1.8  to 2.4 volts, the voltage varies according to the type of SIM card.

Repair hints for Insert SIM card Problem repair procedures:
1. You may check the circuit surroundings first and see to it that it is free from dirt, foreign object and corrosion, a corroded components may also cause the problem, clean it first as necessary.

2. You may start to check the VSIM line paths continuity  by using a multimeter, start from the VSIM capacitor   through to the SIM card pin connector, to check if that said line is okay.

3. Check the ground line of the sim card pin connector, If the ground line is cut it also cause the problem.

4. Remove the EMI filter chip if the above check up is okay, check the EMI filter IC internal line paths, from solder bumps; A2 and A3 are the line for the the SIM data and the resistance value is 100ohms, B1 and B3 SIM reset, the resistance value is 100 ohms also and then C1 and C3 for the SIM clock signals which has a resistance of 47 ohms. Replace it if found busted or damaged, you can easily find a replacement for it in other non working Nokia cell phone models PCB board that has an EMI filter IC also, just look for the solder bumps configuration if it's same.

5. This part may need an adequate experience and extra care to handle with or you may end up killing the phone, if you are a beginner mobile phone techie  you may need to ask assistance to your head tech or a senior and most experience one technician before doing this procedure.
Now if all the above does not solve the problem, you may need to reflow, rework, remove the main IC labeled X-gold 110, then check the solder bumps continuity through to the SIM pin connectors, then reball it and in-place it back.

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microphone components layout and tracing line paths for nokia 1800 and nokia 1616

Repair tips:
1. Check or replace a new microphone replacement before proceeding..
2. make sure that microphone's contact pads is absolutely clean, a poor contact pads of the microphone's terminal also cause the problem.
3. check those two filter coil near the microphones contact pads, have a continuity check between the microphone's contact pad's core to each corresponding filter coil. The inner layer core is the positive and the outer layer core which  is the negative.
4. Continue to check the line paths across  to microphones circuit as shown on repair guide solution above. Trace and make sure that both positive and negative line is not cut or does not have an open circuit.
5. The B+ line indicated in the guide is the microphone's circuit power supply, If this said supply voltage is missing or cut also causes the microphone nonfunctional.
A poor quality audio sound signal also occurs if there is a damaged components on that part.
6. The IC component solder ball bumps that holds the microphones connection can be used to trace those lines if an internal cut or damaged occurred, when all of the above hints does not solve the problem.

Nokia 1616 on off ways solution

                     Nokia 1616, 1800 Power ON OFF switch Line Paths (ON and OFF ways)

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