820-3115 no power LED - mic - no serial showing?

[gadgetfix]

Hey all. previous history of liquid damage, its affected the top part of board. i have removed corroded components and replaced with matching.

The system works perfect doesnt show any errors in AHT aside from what i have mentioned in title.

I need direction.

thanks

 

[dukefawks]

Power LED as in the green light or the sleep light? mic? Usually mic is fucked up by pinching the lead or ripping it from the actual mic.
Who cares about the serial number, just don't bother with that.