SOLVED 820-3787 - All works fine apart than keyboard and trackpad

[it-solve]

Hi guys, got this board with slight water damage. Cannot see any oxidation on the board.

After clean, all work well, however, when started there is no keyboard or trackpad detected.
USB both works fine. Also, the power button on the keyboard seems to be working too.

Disconnected each one by one to check the other. Both are not working.
Tried to swap the board into another case with the same keyboard, the keyboard still doesn't work.

Any advice what shall I measure first?

 

[2informaticos]

Check R4801/02/04.
Be sure SMC_LID is high and BUTTON_DISABLE low.

 

[it-solve]

Thank for the response @2informaticos
SMC_LID - HIGH
BUTTON_DISABLE - LOW

R4801/2 - 0.02V 24 Ohm
R4804 - 3.3V when board is on SMC bypass and 0V when board is connected to power but not turned on - 1.8 Ohm

 

[it-solve]

Figured it out. R8114 - TPAD_VBUS_EN must have been knocked off. Replaced it and have both now.
Thanks for your help again.