820-3332 graphics issue

[PPVCC_S0_CPU]

i have this board, it does not have any liquid damage and the screen will turn off if i move or flex the machine little bit, i haven't seen this problem before so don't know where to begin with.
where should i start first?

 

[2informaticos]

Reflow U8900...

 

[PPVCC_S0_CPU]

I reflowed gmux chip and it seems to work fine for now

 

[2informaticos]

Usually U8900 generates black screen and flickers.
It may got some heat from GMUX and works now.
I still recommend you to reflow it...