[SOLVED]A1502 no power.

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MDY

New member
Macbook pro 820-3476 no power

I have 12.58 stable
ISL6259 acok - 3.40V
Magsafe - Ok
SMC_ADAPTER_EN - 3.40V
PP5V_S5 - 5V present
PP5V_S4 - 0V missing
PM_PWRBTN_L - 3.40V always

Customer told it was working and shutdown the laptop. Few hours will not turn on anymore. No liquid damage.
 

dukefawks

Administrator
3V on L7560? Check for short pulses on L7520. No auto ranging multimeter crap! Check all other rails for shorts.
 

MDY

New member
L7560 - 3.3V
L7520 - no pulse. I did it conecting and disconecting charger several times also but nothing on this coil.

No short on other coils.

S5_PWR_EN - 3.3V
P5VS4RS3_EN - 0V
 
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