MacBook Pro - MacBook Screen Goes Blank

hankdxb · hankdxb #1 (**permalink**)

09-03-2009, 01:10 PM

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?

Sur3Mac · Sur3Mac #2 (**permalink**)

09-03-2009, 04:11 PM

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...

hankdxb · hankdxb #3 (**permalink**)

09-04-2009, 03:32 AM

Thank you. I should have thought of that! Done and will see what happens....

hankdxb #1 (permalink)
Member Since: Sep 03, 2009 Posts: 2	09-03-2009, 01:10 PM 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? Last edited by D3v1L80Y; 09-03-2009 at 01:29 PM.
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MacBook Pro - MacBook Screen Goes Blank

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Sur3Mac #2 (permalink)
Member Since: Aug 03, 2009 Location: The Netherlands Posts: 1,563 Mac Specs: Late 2011 MBP 13" i5/16GB RAM,Early 2007 MB white 13", 2x TV 3rd Gen, ᣦ	09-03-2009, 04:11 PM 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...
	QUOTE Thanks

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