A1286 820-2915-A no boot

[hgoncalves]

Hi,
I have an A1286 820-2915-A that doesn't boot.
It has green light, fan spin, consumes 1.200A w/o battery connected, CPU gets hot, but doesn't power on.

Shall I disable GPU?

All big coils have voltages, except L7550, that has 0V.

Diode reading on L7550 = 0.010

Can you help?

 

[2informaticos]

L7510 final voltage?
PLT_RESET_L comes high?

So easy to disable GPU on this board; consider it as must check option.

 

[hgoncalves]

L7510:
PPVCORE_S0_CPU_PH1 = 1.160V

PPVCORE_S0_CPU_PH1_L = 1.269V

PLT_RESET_L = 3.346V

I've disabled GPU with medusa, removed R8904, but same result.

 

[hgoncalves]

You're write.
It was a mix of RAM and GPU failure.
Tks.