820-02020 // 5V 0.1 - 0.3A //

quasimodo

Member
Hey guys,

liquid damage.


PPBUS_AON: 12.33V unstable

Diode mode reading of PP5V_S2 0.032. Cant find a short.

PP1V8: 1.8V stable.

Every other main voltage is unstable.

Corrosion around UC300. Removed Caps and chip. Same Diode mode reading of PP5V_S2.



What to do?
 

2informaticos

Administrator
Staff member
0.032 reading is really bad.
Probably nothing get hot injecting voltage.
But a good thermal camera may help you.
Don't inject more than 6V there; as always, start with just 1V.
 

quasimodo

Member
got it. UP700 was the bad guy.

but now i got the apple logo - starting to boot, then shuts off. clicking sound somewhere on the board. whats that?

when macbook tries to boot, the green led for the cam was always on and flickering. removed LP610, no light, but same behaviour.

what the hell is goig on here?
 
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