Lenovo P50 power-on issue

[palady]

Hi,

Lenovo P50
MB: BP500, NM-A451, VER 1.0

Issue: won't start. Power LED turn on for 1 sec.
I check rails, they're all work a short time, looks fine. Only GPU reg. is silent. EN pin is 0V.
I didn't find any shorts corrosions, mechanical demages, etc. Any sugestion?

I hope the CPU is not dead

Schematic and boardview -> https://www.badcaps.net/forum/troubl...96#post3242496

[piernov]

Re: Lenovo P50 power-on issue

CPU VCore ok?
Tried known good compatible RAM?
Tried to flash the BIOS?