820-01959 no sound from MB speaker

Soji

Member
The laptop came in dead and the sound card connector with connecting flex cable is burnt. So I used another macbook body to restore this particular board of this MB. the restore was successful, I now transfer the board back to its own body. Now the sound is not coming from MB speaker. But wired earpiece is working.
workaround.
SPKRAMP_RESET_L is shorted.
i replaced u6400 and R6402. Still shorted.
 
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