Macbook A2179 820-01958 no sound

[ipetro]

Hello . fully working macbook. There is sound via Bluetooth and there is sound through the 3.5 mm jack, but the sound itself is not reproduced on the built-in speakers! Replacing the sound card did not help. displayed on devices!

 

[2informaticos]

Check voltage and diode mode to ground at SPKRAMP_RESET_L.

 

[ipetro]

SPKRAMP_RESET_L=0.004V
SPKRAMP_RESET_L= 0.00 short circuit

 

[2informaticos]

Check diode mode disconnecting audio flex.
If still short, remove C6104 and check again.
U6400 is the last option, before T2...

 

[ipetro]

I see a tendency that all my MacBooks are being repaired with bad T2s, I think this time we don’t have to check anything else, it will probably be a bad T2 again (