A2179 820-1958 No audio

[jadao]

I had this board in for repair, a liquid damage one.
Both speaker amp controllers on audio board and logicboard (U6400) were shorted.
I replaced them and all shorts went away except for SPKRAMP_RESET_L it is shorted right from T2 U3900.
Audio volume button is not greyd out, I can put it up or down and see it in about my mac/Audio.

I know it looks like game over but wonder if I can cut the trace and bypass it with another reset signal?
I tried isolating the short by cutting the trace and injecting PP1V8_G3S on the 100k R6402-pin1 but it doesn't seems to work.
Any similar experience? or condemned with external bluetooth speaker

Thanks!

 

[2informaticos]

What is the exact ohm value of the short?
If is not pure short, you can force the signal with low value resistor to 1V8_S0.
You can even tie directly to 1V8_S0.

 

[jadao]

The short is 2.3 ohms ( touching my probes together gives 0.6ohms)

I tried PP1V8_G3S directly to SPKRAMP_RESET_L but it didn’t work.

 

[2informaticos]

T2 is not recoverable in this case...