Is the screen dimming software or hardware related?
When I close the lid of my screen and re-open it: the backlight is off but I can still see the LCD image. If I close the lid a few times and reopen I will then be able to see the screen with backlight on (normal).
So initially I was like ok great, probably the inverter cable getting pinched in the hinge.
But then when the backlight is off and I navigate to the apple symbol and click sleep and wait a second and then press spacebar (or any key) the screen wakes to normal (from no backlight). So now I start thinking maybe this is software related?
I reset the SMC, problem still persists.
I'm also wondering: is there some sort of switch in the hinge that is getting stuck? If so, what does that look like and how could I fix it?