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  1. #1


    Member Since
    Sep 03, 2009
    Posts
    2
    MacBook Screen Goes Blank
    MacBook 15" Screen goes blank suddenly while being used. Comes back after a few seconds and after pressing random keys. Coincides with a Cross appearing in the Battery Icon. Removed Battery and cleaned but no change. Happens whether on firm surface or knees. Thoughts?

  2. #2

    Sur3Mac's Avatar
    Member Since
    Aug 03, 2009
    Location
    The Netherlands
    Posts
    1,563
    Specs:
    Late 2011 MBP 13" i5/16GB RAM,Early 2007 MB white 13", 2x TV 3rd Gen, ᣦ
    Have you tried resetting your PMU, see if that helps...

    step 1 -Quit all of your active applications and shut down your Mac.

    step 2 -Once your computer is completely shut down, disconnect the computer's AC power Adapter and remove the battery from your Mac.

    step 3 -Press and hold down the power button on your MacBook or MacBook Pro for at least five seconds and then release the power button.

    step 4 -With your Mac still shut off, reinstall the battery in your MacBook or MacBook Pro and reconnect the AC Adapter. The PMU/SMU has now been reset on your computer.

    hope this helps...

  3. #3


    Member Since
    Sep 03, 2009
    Posts
    2
    Thank you. I should have thought of that! Done and will see what happens....

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