Monitor going black on my iMac?
After about 15 minutes after I turned the computer on the screen goes black. When I press Opt, Control, Eject and then the space bar it comes back on. It will continue this process many times (at least 9 or 10). When to screen get a little dim then it works fine until the next time which could be anytime.
I've read all the answers and I'm reading it could be anything from a converter cable, logic board, monitor and graphics card.
I've tried resetting the SMC and PRAM...didn't work.
If anyone has been able to correct this problem I would love to know how otherwise I might be looking at a new computer.
Is this a good question?