Loss of power/screen issue

mac2thefuture · Mar 23, 2013, 10:09 AM

Hello,

My mate has a 2011 iMac. The screen will boot up for perhaps only 2 secs when powered up via a normal short press of the power button.

A long press triggers the fans / cpu but the screen remains black for circa 40 secs, then it quickly turns white for two seconds and shuts down again.

Any advice please?

I have asked him to check his power lead, it is connected directly to the wall socket and the input is securely in the iMac.

justperry · Mar 23, 2013, 10:22 AM

So, it does not boot into the System at all, you don't mention this after a short press.

Hold the D key at startup, it will get you into Apple Hardware Test, see if there are any Hardware problems.

Brian Y · Mar 23, 2013, 10:26 AM

Try shining a torch into the screen to see if the computer's actually on, but the backlight is dead.

mac2thefuture · Mar 23, 2013, 12:15 PM

All sorted apparently - he had 30 mins of madness but he says all settled now - perhaps he dimmed his screen via the keyboard ;-)

Mar 23, 2013, 10:09 AM	#1
mac2thefuture macrumors 6502a Join Date: May 2007 Location: Lancashire, North West, UK	Loss of power/screen issue Hello, My mate has a 2011 iMac. The screen will boot up for perhaps only 2 secs when powered up via a normal short press of the power button. A long press triggers the fans / cpu but the screen remains black for circa 40 secs, then it quickly turns white for two seconds and shuts down again. *Any advice please?* I have asked him to check his power lead, it is connected directly to the wall socket and the input is securely in the iMac. __________________ 13" MBP , 27" iMac 2.9 i5, Time Capsule - TV, iPad 2 - iPhone 5
	0

Mar 23, 2013, 12:15 PM	#4
mac2thefuture Thread Starter macrumors 6502a Join Date: May 2007 Location: Lancashire, North West, UK	All sorted apparently - he had 30 mins of madness but he says all settled now - perhaps he dimmed his screen via the keyboard ;-) __________________ 13" MBP , 27" iMac 2.9 i5, Time Capsule - TV, iPad 2 - iPhone 5
	0

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Mar 23, 2013, 10:22 AM	#2
justperry macrumors 603 Join Date: Aug 2007 Location: 7 Km South of an active upside down volcano.	So, it does not boot into the System at all, you don't mention this after a short press. Hold the D key at startup, it will get you into Apple Hardware Test, see if there are any Hardware problems.
	0

Mar 23, 2013, 10:26 AM	#3
Brian Y macrumors 65816 Join Date: Oct 2012	Try shining a torch into the screen to see if the computer's actually on, but the backlight is dead.
	0