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I have 2 boards with same issue 820-00165-a and 820-3437-b. They both are drawing 150ma from power supply. I checked q8150 - only voltage that is present there is S0PGD_C and it is 3.285v I replaced Q8159,R8153,R8156,R8154. Measured all rest near by resistors for their values against schematic...

820-3437-b Board came with prior liquid damage few months ago, fixed at the time. Customer came few days ago with not booting macbook air, i checked and noticed that there is no 5V S3 and 5v S0 also. 5v S5 present. Was poking around and applied heat to SMC around 200c for diagnostic purpose...

Got 00840-a here, came originally with jam filled keyboard, got new assembly, some (jam) marks around wifi, cleaned, reflowed. Everything works except keyboard. Boots up, trackpad fine, wifi, sound etc. Checked PP5V_S0, i am getting 5v there till i hear the dong(chime) from speakers and then fan...

Got the board after water, more info from this post https://boards.rossmanngroup.com/threads/a1466-ppbus_g3h-at-4v.59468/#post-60661 It is working fine, but there is no sound, i got I/O board from 820-3437 and native one from 820-00165, when connect either of them to 820-3437 both works...

Hi, i am new here. Long story short, was banging my head around A1466 820-00165-a board. Originally came in with no backlight. Opened, of course water damage. Replaced water damaged area ( U770, R7731,R7715), started to work. Noticed that there are some water marks around SMC, cleaned, reflowed...