Chosen Solution
After installing an new SSD (which replaced my old hard drive) into my iMac I reconnected the screen and hit the power button. The screen did not turn on, but the computer did. since then I’ve formatted the SSD and installed mavericks and migrated my old files over. I’ve been using my TV as a temporary monitor through all this. These are the things I’ve tried to get my screen running again: I’ve replaced: the LCD back-light cable the LCD data cable the LCD back-light sync I reset the pram and smc I shined a flashlight on the screen to see if the backlight wasn’t working (this is after replacing the cable) - There was nothing on the screen.
The only thing that I see periodically on the screen is what I think to be an apple logo that flashes on startup. Besides that the screen has been completely dead, no light, no pixels, nothing. The iMac was lying on it’s back with the glass off when I tried all these things. I’m at my wits end, I have no idea what to do and why the LCD is not functioning. Please, if anyone has any clue why this is or what else I can try I would greatly appreciated the help. Thank you.
Since it displays on your TV fine, all I can tell you is check continuity on every ribbon cable.
And the take away is? Thank you.
Sadly, I gave up in the project and bought a new laptop years ago. When I first bought the iMac the case was a bit damaged, so I suspect it could have been any sort of problem with the screen assembly.
