820-0281 LCD shuts off

[Sr. Robot]

820-0281 LCD shuts off after a few seconds of booting the OS (backlight on but no video)

During installation of OS it stays on.
It also stays on on safemode
Tried disconnecting everything except LCD, same issue.
Tried reinstalling OS, no change.
SMC_LID is 3.4v
Board looks immaculate.
Sometimes if i close the lid and open again, the LCD turns on for a few seconds, but not always

 

[2informaticos]

Check both SMC_LID_LEFT/RIGHT signals.
If one good, is enough to get high SMC_LID.
But SMC expects both left/right signals also.

 

[Sr. Robot]

SMC_LID_LEFT, SMC_LID_RIGHT are both 3.4v

 

[2informaticos]

If you have backlight in safe mode, may be something related with dGPU.
dGPU driver isn't loaded into safe mode.

 

[Sr. Robot]

backlight is always ON, the issue is no video

 

[2informaticos]

I bet for bad GPU.
You can try to heat for test.