A1706 820-0092-a Water damage no boot . post

[Cire3]

I have a A1706 with a 820-0092-A Water damage near UB400, and bad corrosion at J6600.

Ultrasonic board, cleaned up well, and no obvious signs of damage.

When plugged in, no fan spin, but pulls 5V fo 3 seconds, ramps up to 20V @ .9 A.
After 30 seconds, settles down to .26A After a little bit, comes back up to .5A had stays thee.

CPU gets hot, and nothing else happens.

Starting point ?

 

[2informaticos]

Corrosion in backlight area is very dangerous.
Leakage from high voltage to data lines can kill sensitive circuits.

What is PPVCC_S0_CPU voltage behavior?

 

[Cire3]

PPVCC_S0_CPU Starts @ 1.04V, then drops to 0.65V after about 20 seconds

 

[2informaticos]

Looks like board boots.
Check USB activity and external video.
Caps Lock reacts?