Hi there,

im turning crasy. I tried to connect a mic with amplifier on the PCB after removing the connector block.
I identified (from left to right) connector 6&7 as audio in, connector 8 as audi out ground, connector 9 as audio in ground and connector 10 as audio out.

I connected:
- the audio line from the amplifier board to connector 6&7
- the ground to connector 9
- the live of the amplifier to the battery (+)

I connected an earpiece (from a genuine nokia headset) to the connector 8 & 10.

From the original connector block I removed the headset part but left the rest and......IT DOESN'T WORK

Any idea?