Hi,
i try to change the module but i have some problem.
I checked the correct operation of the microphone detached from the pcb with an oscilloscope and it works properly.
The mic should be like that of the i9300.
From my research the pinout should be:
1 VDD = 2.8V
2-3 GND
4 Vout
On the board less mic
between vout and ground I measure 6.4 ohms
I do not think it is correct.
While I make a voice recording, I try to measure vdd and a few mV.
If i touch Vout recording you hear a noise, so I think the line works.
It seems that the problem is power.
If this model works like a samsung galaxy there should be an LDO regulator upstream of the microphone but can not find in this model.
Anyone know anything?
Thanks
