2 years ago I destroyed the microphone of my LG G3 by trying to clean it with compressed air. A few days ago I decided that it is time to repair it. That time has come today. I ordered the IC on eBay for a few bucks and now after some "wiring" and soldering it works just fine again.
In the step by step guide I wrote how to do this.
I simply took a look on ebay and quickly found a fitting one for about 2 €. It was not exactly the right one with the ideal footprint but at that time I didn`t know better and so i bought it.
The ideal spare part for the lower microphone (LG G3 D855) looks like this:
But you know how things are if there is nothing like a instructable or something else on the internet, you simply have to try out and so did I and bought the wrong one. But hey IT WORKS !!! :D
2
Opening your LG G3
The LG G3 itself is quite "maker friendly". You can open it very easy. As allways keep in mind, that working on a pcb with microcontrollers without ESD-protection is very risky and can destroy your device, so be careful. ( I have actually no particular esd mat or bracelet but I'm trying to ground myself before starting and between the processing. BUT for further works I'll definitly buy one, I mean they cost about 25€ and can protect you against damaging your expensive devices.)
How to open it is well described in this video:
3
Finding the microphone on the PCB
The microphone is located near the micro usb connector. I marked it in the picture below.
Thank you for the great writeup! Usually, this kind of soldering is to be done by a heat gun, so you might want to find one next time you have to do this. Also, on some microphones, the exposed copper ring around the microphone hole actually has to be soldered, too - it provides ground connection. But then, if it works, who am I to judge =)
i hope THW next time I don't kill my microphone again but thanks for the advices !! :)