My Dead/Dim/Dark Display - Fixed!

I recently moved to a new apartment, and my iMac was unplugged for a couple of days. I set it up in the new place, and it started up. The screen quickly flashed gray, then went black. The monitor was very dim (no backlight), but I could see the login window and hear the drive working.
After totally freaking out, I tried the suggestions I found here: zapping PRAM a few times and booting into Open Firmware to reset NVRAM. Neither of those appeared to work.
What DID work was booting into Single User mode (hold down Apple-S while starting the computer). The white-on-black command-line interface loaded, I typed 'reboot', hit enter, and the machine works fine now.
Clearly my problem was software-related; I'd recommend trying the steps I went through before paying for a hardware repair.

I didn't take his post as "not nice". If anything, he was trying to be nice to the majority of people who were not as lucky as you. Call it voodoo, or just plain dumb luck, it's pretty clear to me given the experience I've had repairing Apple displays over the years that Apple's displays often have backlight inverter problems. It's also clear that Apple's lousy 1 year warranty on displays falls far short of almost every other display on the market. It's also clear that Apple has not made any commitment to help people out who suffer this rampid display problem, and believe me, there are more of them than you realize (what you see posted here is only a sample). So while it is nice that you think you found a solution that would help people, it isn't really a solution to the backlight inverter problem. My guess, is this is a fairly educated guess based upon experience, is that your iMac had a "hiccup", but it is on its way to the backlight inverter demise. I'd be interested in hearing how your iMac is doing in another 6 months.

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