Client brought in a iMac with a dead backlight. Flashlight test shows OSX icons on the screen, but no backlight.
So we ordered a replacement LM215WF3 screen from PowerbookMedic. Replaced the screen as in this video
and it does the same thing - still can see icons, but no backlight.
There's a lot of funky artifacts on the dark screen regardless if power on or off. Did we get a second faulty backlight in our replacement screen, or is there something else we're missing? Is there a separate power supply for the backlight itself? I think we got a damaged replacement.