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i was get this mac with x on the battery and service..i was replaed the battery it turn on but no charging..with battery it give 20v start few secound with 0.2a and drain to 0a
all look fine, no short, mac stay on with just battery..witout battery the mac still show like the battery is...
yes,the same..
after it shout off its show 5V 0A(PPBUS 12v) until i disconnect the battery and connect again and it turn on when i connect the charger..and the after the password enter its off again..
M1 14” with weird problem
No water damage and not any looking damage..
Mac can work perfect and suddenly it crash and or not turn on at all, or after few minutes hours, it turn on just when charger connecting, get to the password slot, type the password press enter and boom shout off…try...
didnt find something..but! i was injunct 1v to PPBUS to see maybe something will warm-up and yes! it was small cap with tiny crack..i was take it out and now all work!
thanks!
i get 12.3v on C5254 without F5200, but when i put new good F5200 again no voltage on PPBUS and on PPVBAT , no short found
PPBUS without F5200 0.100 PPVBAT 0.300
no water damage or seeing damage....
PPVIN_G3H_P3V3G3H low short 0.0756 should be 0.550
i was take out all PPVIN_G3H_P3V3G3H line (U6903/D6903/U7000 and some components) but still 0.0700...weird
O.k it was also problem with one of the memory stick..
Now everything work.!
So for other that will fix this shi** few things.
All the 4 power supply screws(silver) must be connected to get 12v on board.
After replace/upgrade something and you see one led on, just do restore with DFU.
1# led is...