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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-OTHER, Mac OS X (10.6.8)

Posted on Aug 31, 2012 3:03 PM

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Posted on Mar 17, 2017 12:32 PM

I have the same issue. In the past, my Cinema display would just go black; if I unplugged the cable and plugged it back in to my MacPro (2013), it would be find. Eventually, that problem self-resolved. More recently, the screen will flash black for a second if I'm changing web pages in Safari, or applications (going from Word to Quicken for Mac, for example). Of course, my AppleCare coverage ran out last month (can you believe it? how do they do that?).

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Mar 17, 2017 12:32 PM in response to Gregory247

I have the same issue. In the past, my Cinema display would just go black; if I unplugged the cable and plugged it back in to my MacPro (2013), it would be find. Eventually, that problem self-resolved. More recently, the screen will flash black for a second if I'm changing web pages in Safari, or applications (going from Word to Quicken for Mac, for example). Of course, my AppleCare coverage ran out last month (can you believe it? how do they do that?).

Sep 3, 2012 8:50 AM in response to Henning Eckhardt

Hey, Henning, I tried something that may have worked. I read a few of the discussions about other size (24", 22") LED cinema displays and how people thought it may be a software update that had created the problem. So, I went to System Preferences and then Displays. At the bottom of the displays panel there is a brightness slide bar and beneath that a check box to "Automatically adjust brightnes as ambient light changes".


I unchecked this box.


I have not had the display turn black since I did this. It has only been a few days though, so I cannot say for sure whether this is a reliable fix. But so far, so good. Give it a try and let me know if it helps. If my display goes black again I will let you know. Guten Glück!

- Greg

Mar 15, 2017 2:53 PM in response to Gregory247

I had this problem. I hate that people don't post answers after they solve it. Macbook pro 15" 2009. 2010 27" LED Display.
My screen went black after ~1 year. All it was is that I keep saying "update later" to my OS, and when I left my Macbook on overnight the screen got caught in sleep mode and I couldn't make it work for days.


Updated my OS and it wiped the screen, then clicked on "Default for Display." Works now.
Solved, fixed, working, anyone actually fix this, no, help, and any other search keywords.


Godspeed.

Sep 6, 2012 12:47 PM in response to Gregory247

I replied to another post as well about this. I am having the same/similar issue and it seems to be something with power in the monitor....


I have a mid-2009 Mac book pro 15" plugged into a 27" cinema display. I notice the same kind of issue. Unplugging it and then plugging it back in usually solves the issue, but often only for another 15 minutes or so. Now the issue has become worse. When the screen "blacks out" the led indicator on the magsafe power cord to the laptop also goes out. It seems to me that this is some kind of internal power regulation issue in the display. This monitor was replaced for the same issue about 14 months ago at an Apple store with no explation of the issue and ofcourse... now the replacement is not under warranty any longer... any thoughts?

Oct 8, 2012 10:30 AM in response to Nico Tru

Sounds like the same issue I have been having. Since Apple refuses to help me (without paying full cost) with a screen that is only a year old now (since they replaced it last for the SAME problem), I dove into the issue myself. All troubleshooting points to the internal power supply. The part number is 661-5543. I've ordered one to install myself.

Oct 14, 2012 2:23 AM in response to Gregory247

Hi!

I seem to have the same problem as well. My 27" Apple cinema display is about 18 month old. I use it with my MacBook Pro 2009. A month ago, the display went black and the magsafe plug stopped working as well. I unplugged it, replugged it, looked at it in dispair... Nothing worked. After 20mn, it just started to work again, by itself, mysteriously. Last night, the same thing happened. But it never started to work again. I am at a loss. I do have the Apple protection plan. But about 15 month ago, I moved to France. So now, I am really not sure how and whom to contact. Things are not so easy here in France and nobody is really helpful. I do live in the country so it is even harder to find out about an Apple store. I haven't seen one yet since I am here.

How hard is it to replace the defective part if, indeed, it is the internal power supply?

Thanks for helping me out!!

27" led cinema display goes black

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