Solution For Gadget

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.

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.