Nokia 1508,1508i Hardware Repair Solution for USB Not Charging Problem

Here's the Nokia 1508 and 1508i USB not charging problem solution., This shows some  hints on how to fix when the device is unable to charge up  when the charger is being plug-in.

If encountered this problem, you may first try to used any other working charger, and then clean the USB pin connector if still the device wont charge-up.
If seems the above basic procedures wont help, refer to the solution below and locate the highlighted components showed on the following solution below.

Nokia 1508 USB Charge Ways - Components and Connection Tracks

First try to check the fuse, filter coil and the diode (if mounted) for possible damaged. Replace it at once if found faulty. Check and trace also the power supply voltage line paths from the USB pin connector down to the fuse and the filter coil.
If seems all of the components and connection were both okay, you may then try to replace the USB VBUS controller IC. This chip holds and control the USB charging voltage before it feeds to the main charging control chip which is the Power IC.

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Nokia X3-01 MIC Solution, Mouthpiece Microphone Problem

Here's the Nokia X3-01 Mic problem or Not working microphone solution. This solution shows some tips on how to fix the device if such problem occurred.

In fixing the microphone failure on the device , you may try to replace the microphone module first, to easily confirm or determine if the said components is still working or not. If the mouthpiece module seems still working or already tried replacing it but the problem still exists.;
You may hen refer to the solution below and locate the highlighted components, and do some test or check-up procedures.

Nokia X3-01 MIC, Mouthpiece Microphone Failure Solution

The highlighted components were composed of resistors and capacitors, you may then try to check these components for possible damaged. The 1.4 volts is the circuit supply voltage to make it operational and tends the microphone to work properly.

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Nokia 6124c Not Charging Problem Solution

Here's the Nokia 6124c solution for not charging problem such as charger no response and fake charging or shows charging indication but it won't stored on the phones battery.

This solution provides some hints on how to fix the phone if the said charging problem happens. refer to the solution below and start locate those highlighted components on the PCB board and do some tst and check-up procedures.

Nokia 6124c Charging Problem Repair Solution

To fix the device, you may start checking up the charging pin connector, make sure that its terminals are not bended or damaged. Clean it if necessary including the charging pin terminal contact pads on the PCB board.
If the above steps doesn't solved, check the FUSE, Coil, capacitor  and the Diode, then replace if found damaged. If all these components seems all working OK, the next option will be is: Try to reheat, rework the Betty IC, these IC holds as a charging controller circuit. You may then try to replace it, if after reheating or reworking it doesn't solved the problem.

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Nokia 6124c Power ON-OFF Button Switch Jumper Ways Solution

ere's the Nokia 6124c power On/Off button switch jumper solution, and can be used to fix the device if the said button switch terminal solder pads is already been lifted or damaged.

If the said button switch is already been damaged and the solder pads is okay you may just replace the button switch and the device will work again. For lifted solder pads, try and manage to dig out carefully the solder pads layer using a sharp pointed blade, where you can establish a solder to the power switch connection and toughly bond the switch so that it won't move and be damaged again. For severely damaged lifted board, the next option is only by way of applying a jumper wire directly to the Power IC.

Nokia 6124c Power Switch Jumper Ways

The solution above shows the connection line paths of the power button switch of Nokia 6124 classic,. You may notice that the line paths is connected directly to the Power chip,. Re-establishing a connection through this procedure needs a tough soldering skills. So, do not ever try to attempt this method if you do not have the guts to do this kind of process, just ask assistance to your head tech or master technician.

For doing this, you may first remove the Power IC and then manage to mend or apply a tiniest jumper wire to it solder bumps D9 down to the power button switch terminal, so good luck....

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Nokia 6124c Earpiece Speaker Problem Solution

Here's the Nokia 6124 classic solution for not working receiver or earpiece speaker failure. This solution shows some hints on how to fix the phone if the receiver speaker failed to have an audio output or no sound can be heard on the device when making a call.

If encountered to fix this problem you may need to check the receiver speaker first using a multimeter or try to replace a new one  to easily determine if the speaker is still working or not.
You may also clean the speaker terminal contact pads on the PCB board, sometimes a loosen or poor contacts also caused the problem. This sometimes occurred when the device suffered wet or water damaged and or accidentally heavily dropped.

If the above procedures doesn't work or fix the problem, refer to the solution below and do a check up on the highlighted components.

Nokia 6124C Earpiece Receiver Speaker Failure Repair Solution

You may first check and try to replace the filter coil and the ESD protection resistor for possible damaged, and trace its connection line path through to the speaker terminal pads.
If those components seems working okay, the next option is to reheat the power IC with a hot air station.
Reworking or replacing it may possibly also needed if the power IC chip is already faulty or damaged.
You may also trace the connection line paths of the earpiece speaker to where it is being connected from the AVILMA IC while it is being remove from the PCB.

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Nokia 6124c Ringer, Buzzer Speaker Not Working Problem Solution

Here's the Nokia 6124 classic ringer speaker solution that may possibly help fix the device if there is no alert sound can be heard over the phone. This solution provides some simple tips on how to solved this problem if  somehow occurred.

To fix this problem, you may first try to check the speaker using the multimeter or try replacing it with a new one. You may also ensure that the speaker terminal contact pads on the PCB board is clean.
If the speaker seems working and the PCB pads is cleaned but doesn't solved the problem, refer to the solution below and do have a test and check-up on the highlighted components.

Nokia 6124c Ringer Speaker Connection Tracks

you may then check the filter coils and the capacitors, replace if found damaged or faulty. The speaker's audio signal is feed from AVILMA chip. There is a circumstances that you may need to re-heat, re-work or even replace the said chip.

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Nokia 6124c Keypad Problem Repair Solution

Here's the solution for Nokia 6124 classic with keypad not working problem. This solution shows the  connection of the keypad matrix of the phone.

If some or all of the keys stop working or responding, you may first try to check the keypad flex matrix for possible damaged, dirt or oxidation build -ups. Ensure that it is absolutely cleaned. Replace the keypad flex matrix  if severely damaged.
If the keypad flex seems okay but some of the keys either like, 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9 ,0,  #, *, left, call, soft left, up, down, right, soft right or select that does not respond, refer to the solution below and locate the keypad filter IC and do have a check and or replacement procedure.

Nokia 6124c Keypad Filter IC Connection Tracks

The keypad filter IC is mounted or located near the LCD pin connector. You may then try to replace it with a new replacement spare. You can also track down its connection for possible cut-off or open circuit.

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