a1286 2011 820-2915 NO VIDEO problem, all powers present

roy.ruan

New member
hi guys,
having a 820-2915 board. board looks never touched before, no liquid spilled.
problem is no video, check all rails, basically all power present.including cpu vcore,gpu power

no beeps at all, either with or without ram. suspected the GPU ,which is a common problem of this model, then BGA and replaced with new one
(yes we did a lot of replacement of this model for the GPU, and all work out)

but still same thing,tried another bios, but same thing

really get stuck and don't have idea where to start now.

any advice would be appreciated.
 
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