Macbook a2337 sound not working

[Extreme]

Hello, I got a MacBook air a2337 with liquid damage; the audio board was damaged, sort and no power, I removed the short, and then I got the MacBook back on
after this sound was gone. I decide to replace the audio board, but the sound is still not working. Speakers are ok.

The motherboard is not corroded or anything.

Any advice for me?

Thanks

 

[2informaticos]

Very likely M1 damaged by leakage from PPBUS_AON to some of its audio data lines.
Check diode mode to ground on RIO connector (page 50); compare with good board.

Do you get headphones sound?

 

[Extreme]

I found a line CODEC_WAKE_L going to U8100.
It looks like a small burn. I am right?



I do get headphones sound.

 

[2informaticos]

You should check and compare diode mode readings, as above explained.
I don't see other reason than the leakage, caused by liquid spill on audio board.
Similar failure has been detected on 01521 and 01958 boards.