[SOLVED]820-3437 after repair show 100% battery only when charging

ielectron

Member
the 1.85V buffering cap was shorted C7375, replaced, F7140 went out too, replaced, now macbook is working fine, charging, works on battery, but when i connect the charger right away shows 100% charge, and when disconnected shows the actual charge, like 84%, SMC PRAM reset, same thing, actually it is wokrking fine but that is weird, tried 2 new batteries, same
 

Paul Daniels

Super Moderator
I'm speculating here.. until a pro turns up.

Is Q7155 damaged? Check to see if it's blocking properly between Drain & source, or if there's any conduction between gate and D/S

( Likewise check R7150 - 51 - 52, maybe U7100 was damaged, though I'm not familiar enough with how macOS derives its battery charge status % )
 

dukefawks

Administrator
The usual checks done around the ISL6259? Resistance between 17/18 27/28? PPBUS voltage without battery? Q7155 shorted or fried?
 
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