820-00850 5V 230mA

raainxx

Member
Hi,
i have this board, the board work well and shutdown for always.
i see liquid spill on the board, I clean it by cleaner ultrasonic.
the board have 5V with 250mA, I can see in DFU mode but error in restore.
i have all signal SLPSR and awake. PPBUS is OK (12,31V).
I don't know why maybe T2 chip?
thanks
 

raainxx

Member
Hi,
yes I try with a battery connected.
PP1V8_SSD0 = 0
PP0V9_SSD0 = 0
sorry for the slow answer, I haven't time. now I'm ready to find solution of this Mac.
 

2informaticos

Administrator
Staff member
Board can't boot without SSD voltages.
Check diode mode to ground on corresponding power rails.
Also check on the big coils of secondary power supplies.
 
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