iMac screen black power supply or motherboard issue

Discussion in 'iMac' started by susu, Nov 19, 2012.

  1. susu macrumors newbie

    Joined:
    Nov 19, 2012
    #1
    Imac screen black no chime I don't know if is a motherboard or power supply issue, led 1 and led 2 are on, not recognize usb keyboard or mouse keyboard, fan are spin, not recognize bluethoot, not eject cd. No boot from cd.
     
  2. HacKage macrumors regular

    Joined:
    May 14, 2010
    #2
    if there is no LED3, that points to video issue so will either be video card or logic board
     
  3. evildead1971 macrumors newbie

    Joined:
    Nov 20, 2012
    #3
    how do i check to see if the LEDs are on or off?
     

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