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water damage at u8020 area and u5870 area(was replace both) no other seeing damage.
charger green/orange, no fan
PPBUS-12V
PP5V rail pulse from 0-3v constantly.
"PPBUS-12V"
You have more than 2 years on the forum; didn't learn yet the importance of exact voltage???
Check it w/ and w/o battery connected.
Be sure to use original Magsafe 2 60/85W charger.
CPU coils pulse too?
What about PLT_RESET_L?
Try starting in SMC bypass mode.