Macbook A1466 No Audio

[Instafixx]

There is no audio in the board. Replaced speakers and chcked.
Board had initially come for a not turning on issue.
There was corossion around U1950 and issue was resolved by cleaning.

Still went ahead and replaced U1950

 

[2informaticos]

Be aware, 3437 and 00165 SMC swap can cause such problem.
If you have doubts about SMC, reflash it.

Did you test with known good LIO flex/board?