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  1. #1

    Member Since
    Dec 13, 2011
    Screen blacks out
    The screen on my imac goes black sometimes. Sometimes it comes back by itself and sometimes not. If I reboot it operates much better but usually slows down and blacks out. I have had my mac for three yrs and this has just started. What do I need to do to fix it?

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    When that happens again, if possible, hook another monitor to your iMac or even a TV to see if that same black out occurs on the monitor or TV. Let us know the results.

  3. #3

    Member Since
    Dec 13, 2011
    Screen black outs
    I don't have another monitor to hook it to. What seems to happen is when I let it just go to sleep, instead of signing off, when I come back to it and wake it up is when the problem occurs.

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