iMac screen black power supply or motherboard issue

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

  1. susu macrumors newbie

    Nov 19, 2012
    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

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

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

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