820-3024 no S5


New member
Liquid damage mainly around LCD circuit. Has been worked on at some point in the past.

BIOS chip looks well toasted.
Bodge wire on U7100 pin 7 VCCSAS0_SREF connecting to C7103 & R7147

PPBUS_G3H = ok
3V342 = ok

No S5 rails and no S5 enables, no pulsing at all and can't find a short.


It should be 8.6V. SMC has no data connection to the battery/ISL6259. Could be corrosion under SMC or dead SMC.