Help me out here guys, cause I don't remember: Is the little power indicator on the display (lower right hand corner) supposed to be on solid all the time or only blinking when the display is in sleep?
Mine is OFF when the screen is working. It blinks like crazy when the screen is flickering/shimmering, and when I put it to sleep it just blinks.
I've reset the PRAM, checked the cables, plugged it into the OTHER video port, even moved it to a different power source, etc.
My gut tells me it is the power supply because the display is behaving like there is insufficient power to drive the screen.
Called Apple this AM and they advise I call a service center.
Service center says bring it in, we'll send it into Apple for service.
I better not get it back with scratches, etc.