Loss of power/screen issue

Discussion in 'iMac' started by mac2thefuture, Mar 23, 2013.

  1. macrumors 6502a

    Joined:
    May 15, 2007
    Location:
    Lancashire, North West, UK
    #1
    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.
     
  2. macrumors 603

    justperry

    #2
    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.
     
  3. macrumors 68030

    Joined:
    Oct 21, 2012
    #3
    Try shining a torch into the screen to see if the computer's actually on, but the backlight is dead.
     
  4. thread starter macrumors 6502a

    Joined:
    May 15, 2007
    Location:
    Lancashire, North West, UK
    #4
    All sorted apparently - he had 30 mins of madness but he says all settled now - perhaps he dimmed his screen via the keyboard ;-)
     

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