iMac 21.5 mid2011 powering off by itself? Model A1311
by Crissyanon - 1/29/13 4:37 PM
My iMac is powering off all by itself. It's like some one is pulling the power cord out. Some time it can be on for an hour then turns off while other times only a few minutes. I've tried the SMC reset, bought a new power supply but its still powers off. Put it in the shop but no one knows. Some time it won't turn back on and other times it will.