Gregory247

Q: 27" led cinema display goes black

My Apple 27" LED Cinema display has begun to go black for no apparent reason. I am running Mac OS X 10.6.8 on a Mac Pro with a6-Core Intel Xeon processor with 8 MB of memory. The system and dispaly are about a year old or less. I have had no problems with this system until today.  the display has gone black several times now. I shut off the computer and rebooted and it comes on again and then after a period of time goes black again (whether I am doing something or not on the computer).  I have zapped the PRAM and repaired permissions.  It does not seem to affect whatever is wrong with the display. Has anyone else experienced this? Does anyone have a solution other than sending the display in to Apple for repair?  Thanks.

apple 27" led cinema display, Mac OS X (10.6.8)

Posted on Aug 31, 2012 3:03 PM

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Q: 27" led cinema display goes black

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  • by jimmckay,

    jimmckay jimmckay Mar 28, 2016 6:16 PM in response to Gregory247
    Level 1 (4 points)
    Mar 28, 2016 6:16 PM in response to Gregory247

    I was having the same sort of issues and just discovered that if I set the brightness to about 75% via the displays panel and unplug/replug it I don't have trouble anymore. Seems like the backlight is going bad and can't keep the 100% brightness going. Or perhaps a firmware issue.. The firmware updates refuse to run on my MacBook though.

     

    You can check whether it's a backlight issue by shining a bright flashlight (or iPhone) directly into the screen in dim lighting. If you can see pixels, it's the backlight.

  • by Zorro21c,

    Zorro21c Zorro21c May 24, 2016 9:28 AM in response to TonyAugust
    Level 1 (14 points)
    May 24, 2016 9:28 AM in response to TonyAugust

    For $300 you can buy a nice glossy PC monitor screen and attach to Mac.

  • by CnSntrk,

    CnSntrk CnSntrk Jun 18, 2016 5:57 PM in response to Gregory247
    Level 1 (4 points)
    Jun 18, 2016 5:57 PM in response to Gregory247

    i had the same problem with my display for aprox a year. but only with my MacBook Pro 2011. The other laptops are working fine.

     

    * MacBook Pro 2011: problems

    * MacBook Air 2016: working great

    * MacBook Pro Retina 15 2016: working great.

     

    for the MacBook Pro 2011 i have a simple solution: don't put it to sleep mode!

     

    Whenever i attach the 2011 Laptop to the Monitor, i restart the laptop (no joke! ). Then i changed the "Display sleep"->"Never" in "Preferences > Energy Saver", if the system is on "Power Adapter".

     

    Never had the effect ever since.

  • by scottsmi,

    scottsmi scottsmi Jul 20, 2016 12:37 PM in response to Gregory247
    Level 1 (4 points)
    Jul 20, 2016 12:37 PM in response to Gregory247

    I had the same issue, screen not turning on, even if plugged into different port on surge protector. The magsafe power supply not delivering any power to my laptop. I'd had flickering problems for over a year.

     

    BUT... I didn't need to buy a new power supply. Plugging directly into the wall, bypassing the surge-protector (belkin) made everything work again. I don't even have flickering any more. If you have these problems, try this first!

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