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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > Why screen going black?

Why screen going black?
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jeff k
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Join Date: May 2001
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Mar 31, 2010, 08:33 PM
 
My screen is going black and I've got energy saver set to never and screen saver to never. any ideas? thanks.
OS 10.6.8
imac-2 core 27"/2009
4GB Ram
     
Big Mac
Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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Mar 31, 2010, 08:36 PM
 
Does it occur after a period of inactivity or randomly? Are you talking about a built-in display (iMac or laptop) or an external display?

"The natural progress of things is for liberty to yield and government to gain ground." TJ
     
jeff k  (op)
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Mar 31, 2010, 09:43 PM
 
new 27" imac. it happens after a very short period of inactivity. Just started after having machine a few months.
OS 10.6.8
imac-2 core 27"/2009
4GB Ram
     
jeff k  (op)
Senior User
Join Date: May 2001
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Mar 31, 2010, 10:33 PM
 
update, I was just online and the computer went to sleep! baffled.
OS 10.6.8
imac-2 core 27"/2009
4GB Ram
     
Big Mac
Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
Status: Offline
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Apr 1, 2010, 02:23 AM
 
Have you done an SMC reset?

Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve:

Shut down the computer.
Unplug the computer's power cord.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.

If you continue to see those symptoms after that you should take it in for warranty service.

"The natural progress of things is for liberty to yield and government to gain ground." TJ
     
jeff k  (op)
Senior User
Join Date: May 2001
Status: Offline
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Apr 1, 2010, 12:10 PM
 
thanks! I'll keep you posted on this Big
OS 10.6.8
imac-2 core 27"/2009
4GB Ram
     
   
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