820-00165 no sound card after water damage

[ohannis]

Got an macbook air with water damage cleaned the board, system boots fine now but audio is inactive in OS, where should i start from

Thanks

 

[JohnB8812]

Where was original corrosion? Using known good DC in board? J9500 look good especially the joints facing the fan?

 

[nik1981]

Yeah, probably J9500 connector, 821-1722-A ribbon joining it to the DC board or the DC board itself

 

[dukefawks]

First thing to try is another IO board and flat cable.