820-3330 Graphics issue

[Therealkilometers]

No liquid damage. Tested another LCD, Reballed VRam, Resoldered and replaced U8900. Just looking for confirmation its a dead GPU?

 

[JohnB8812]

Very well could be. Reball the GMUX just in case

 

[SMMRepair]

Never seen a MUX do that. If it really has been worked on that much, you can't rule out damage to the board itself. Of course, GPU highly suspect, as it damage near/around it...inspect entire board very well for missing/damaged components.

 

[2informaticos]

Can you access OSX?
If yes, switch to iGPU and see what happens...

 

[Therealkilometers]

It crashes when booting

 

[2informaticos]

Reflash BIOS with clean ME.
If still the same, then should be GPU...

BTW, external video same?
If yes, then is not GMUX.