Flickering rectangles on 27-inch Apple Cinema Display

Discussion in 'Mac Accessories' started by EvilEvil, Nov 18, 2015.

  1. EvilEvil macrumors 6502

    EvilEvil

    Joined:
    Jan 8, 2007
    Location:
    New York City
    #1
    Occasionally rectangles of various colors or static snow flicker on my 27-inch Apple Cinema Display. They go away if I move a window on top of them. Then it doesn't happen for a while. It's hooked up to 2012 Mac mini. I tried running a ram test with Tech Tool and everything seems fine. Is the monitor going bad or is the Mac mini's logic board? Anyone ever encounter this problem?
     
  2. jettie1767 macrumors 6502

    Joined:
    Oct 29, 2003
    Location:
    New Jersey, USA
    #2
    My iMac did that two days ago. Brought it in to Apple today and they think it's the video card going bad.
     
  3. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #3
    99% that's the graphic card, but not the monitor's problem.
     

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