24" Cinema Display flickering and eventually going dark

I am having a repeat of a problem with my Apple 24" Cinema Display. The symptoms are the display will go black and come back on (flicker) and sometimes it takes a few seconds for it to come back. All USB devices connected to the Cinema Display become disconnected from my MacBook Pro when this happens.
Last time this happened it started slowly and as time passed it happened more frequently. When I brought it into the store they were able to reproduce the problem immediately. They replaced the logic board in the monitor.
I contacted support again. The display is still under warrantee. They scheduled an appointment for me to bring the display in. I am seeing the same behavior where the frequency of this problem increases as time passes.
I am concerned they will be unable to quickly reproduce the problem again and not fix it, or fix it and the problem will come back again in a few months. I am afraid that I will still be having this problem after the warrantee expires.
I've purchased many displays over the years (including Apple) and this is the first time I have ever had a problem. I think I may have had a lemon.
I originally posted in these now archived threads:
http://discussions.apple.com/thread.jspa?messageID=12175983#12175983
and
http://discussions.apple.com/message.jspa?messageID=12311032#12311032

Just a quick update. I brought the display into my local Apple store. After they reviewed the records from the previous repair and my description of the problem they believe it could be a power supply problem inside the monitor. The power supply may have caused the logic board to go bad. Replacing the logic board last time fixed the problem but the bad power supply ended up causing the problem to return.
I let them know that I was concerned that this is a reoccurring problem and my warrantee expires in July. I don't want to see this problem come back after the warrantee expires.
I'm not sure what they will do if that happens. I hope this problem gets fixed this time around.

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23" cinema Display flickers and goes to black

Hey all,
I am running two 23" cinema displays and one of them is flickering and going to black. Here is a video of it.
http://larskoerkemeier.com/MVI_0972.MOV
The curved bands arent there thats just from the filming but what happens is the entire image shifts up very quickly and what you see flash on the bottom is actually the top. It repeats this a couple times and then turns off and then it repeats and after a couple times the display just stays off.
System:
Model Name: Mac Pro
Processor Name: Dual-Core Intel Xeon
Processor Speed: 2.66 GHz
Memory: 6 GB
Graphics Card: NVIDIA GeForce 7300 GT
Thanks,
-Lars

Hi-
Try switching the power adapters to see if the problem moves to the other display.
Of course, reconnecting/double checking all connections is a good idea.
Other than that, any references in Console/Logs regarding graphics driver errors?

IMac 27' Mid 2011 display flickering and going dark

Having bought an iMac 27' in may 2012 I was confronted with a flickering of the screen and the display eventually going dark for a certain amount of time.
Unfortunately the first level support wasn't helpful and the second level support rather rude.
Have taken the iMac to the seller I was told they would have to change the display for € 700,-. Apple would refuse to extend the one year warranty though other people have encountered the same problems obviously after checking in different support forums.
So did anyone find a cheaper solution then just to exchange the whole display? Having to spend half the prize of a new iMac can't be the answer.

Yes, the light comes back after a few minutes or half an hour.
Will try take a screenshot when the display is off again as soon as I get the iMac back from the workshop.
I have decided not to spend so much money on the replacement of the display for the moment. If the light goes off more often I will buy another display (probably a non-apple-product with a better warranty) and connect it to the iMac.
As much as I love the concept of the apple products and the idea of an All-In-One computer (it's my 7th apple in 25 years), I really disliked how they treated me as a customer with a valid complain.
If it just this little cable why would Apple replace the whole display? I'll check if I can fix it myself then.

27'' LED Cinema Display flickers when powering MBP and dimmed down

The 27'' LED Cinema Display flickers (backlight flickers) in the following situation:
* The display powers an MacBook Pro (e.g. later 2010).
* The MacBook Pro is fully charged (i.e. power is not used for charging).
* The MacBook Pro performs some GPU intense task (moving the mouse over the dock with magnification enabled).
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The problem disappears if the MBP is powered by an independent charger.
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Same problem here! I bought two brand new 27 inch Cinema Displays, one for work and one for my home office. Both showed the problem. I returned both, go replacement displays and both show the same problem. I am using them with a 13 inch MacBook Air late 2010. I use them with the MacBook's display lid closed and powered by the Cinema Display. The problem only occurs when the display brightness is at 1 to 5 bars. From 6 bars on everything is fine. I also noticed that the flickering is stronger when I USE the computer, i.e. dragging around windows, typing, etc. When I just look at the screen, the flickering occurs more sporadically. The flickering looks like a short switching off of the display light (a few milliseconds).
I just tried the hint suggested in this thread and indeed, when I open the lid and have the MacBook running on batteries (not powered by the Cinema Display), the flickering is gone! So it really seems to be dependent on that.
Please fix it, Apple! This is not acceptable for a premium-quality display! We have already done a good job narrowing down the conditions under which the problem occurs. You should easily be able to reproduce the issue like this:
- use a MacBook (e.g. new MacBook Air) and turn it on
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- close the lid of the MacBook and re-awake it with an external keyboard so the Cinema Display will be the only display in use
- wait a few hours for the Cinema Display to become warm (not sure if this is a necessary condition but it could be)
- then, use the computer under low-light conditions and ensure the brightness is at 5 bars or less
--> You will see the problem.
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27" Cinema display flickers when woken from sleep

I've noticed that my 27" Apple Cinema display flickers briefly when woken from sleep.
I have had the display for 8 months, and haven't noticed this before.
It flickers (or flashes), just once when the display wakes when the computer is woken from sleep. It only affects the bottom third of the display.
Once it has properly woken, and flickered once, it then works o.k.
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Thanks.
Bob.

Yeah - I'm trying to verify that 100% right now. I know that I won't get full functionality from the TB dispaly (no TB, FW or ethernet on the back of the monitor) but if I can get video and USB between the Mac and the displays, that would be enough. I haven't seen any docuemtnation anywhere deatailing wether or not that TB displays will work with existing video cards / Mac Pro's, or if I'll have to do a full round of upgrades including my Mac Pro and the ATI 5770. And as you know, there are no TB video cards on the market at this time. My timing basically *****...
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Bobby

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Hello,
I've recently purchased a 27" Cinema Display and hooked it up to my mid 2010 13" MBP. Everything works fine except for one really annoying thing: The Cinema Display flickers when the mouse cursor changes. I've done a thorough search through the community threads and haven't found anybody who's experiencing the same problem. Could anyone please tell me if they've run into this issue, and if so if there's any way of fixing it.
Thanks!

Might be related to the thread below.
To give you a quick summary, try either of the following:
- use your macbook's charger rather than the cinema display magsafe connector
- increase the brightness to 7 bars or more
- simply unplug the magsafe used by the cinema display
https://discussions.apple.com/thread/2669791?start=30&tstart=0

When i open my computer the login page comes up and then goes dark right away. i have to shut down and turn on to get to work. just a month old mbp 15. just started it today. any suggestions. software says it is up to date.

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You could try wiping the hard drive and reinstalling the OS and all your programs.
Did you install any programs yesterday?
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Hi, firetiger.... i have the EXACT same problem!!! i have the same Macbook aluminum unibody screen also. I have no idea how to fix it. I'm also out of warranty and i've tried everything... resetting the pram, trying to restart in safe mode, trying to boot from a cd... .NOTHING WORKS!!! i can still control brightness itself but ive never tried attaching to an external monitor. I know everything is loaded correctly... i just don't know whats wrong. If you have any ideas.. please let me know. Also, I think apple will fix the macbook pros with a similar issue for free http://support.apple.com/kb/TS2377 but i know this doesnt apply for me. hopefully they work something out because I really love that computer!!!

Cinema Display 30" and MBP - No Picture

I have a 2.16 Core Duo Macbook Pro 17". Today I purchased a 30" Cinema Display at the Apple store.
Because of issues I had heard about I had the Apple employees help me open the box and plug in the monitor to a Macbook Pro on the floor to check for dead and hot pixels and other screen problems. None found. I was so psyched!
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I have owned a MacBook Pro (15" / 2.16GHz / 2GB) and 30" Cinema HD Display since September 2006.
The display's DVI, USB, and FireWire cables are all connected to the MacBook Pro. A keyboard (with mouse) and iPod dock are connected to the display's USB ports, and two LaCie D2 drives are connected to the display's FireWire ports.
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27 LED Cinema Display Audio and Brightness when powering MacBook Pro

When my 27 LED Cinema Display is powering my (or another) 2009 13" MacBook Pro, I have experienced three issues:
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2. I also have the sluggish keyboard behavior when adjusting the volume that others have mentioned.
3. I have experienced shifts in display brightness which are obvious when the display is dimmed. I have disabled the ambient light sensor as well as any interfering power management or energy saver settings. Opening apps, scrolling and other normal activities seem to aggravate this behavior.
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mmayo wrote:
I am having the same issues & with a 1 day old display. I am using a 15" MBP. The screen is killing me when it dims down when no lights are on. I didn't notice the issue when the screen is brighter with the lights on. Anyone know if this is a hardware or software issue? I'd like to utilize the ambient light sensor but not if its going to make my screen flicker when it is dim....
(1) I have never had any deaths associated with my screen, but on rare occasions my display's brightness will flicker when I manually adjust the brightness. The fix I have found for this is to increase the brightness one more setting or decrease it one more setting. Changing the screen from full dim to full bright and then setting the brightness I want sometimes helps, too.
(2) You can check whether this software update has been applied to your 27-inch:
http://support.apple.com/kb/HT4293
(3) Your Apple Service Provider could tell you whether your problem is related to hardware or software.
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Hello,
This is the first post for me, however the answer will determine whether I make the jump for an air.
Will the usb hub on the cinema displays work with the macbook air dvi output connector. (essential for me to purchase) would firewire work (bonus if it does)
Unfortunately I have to have ethernet connection because of the setup in my office, and some of the software I use has usb hardware dongles. The ethernet adapter is fine but I also need usb.
When I am on the go the single usb will suffice.
Any advice would be really appreciated.

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Hello,
I recently purchased a second hand 27" Apple LED Cinema Display, and I now started to have some issues.
The first issue started today, it is some kind of buzz that comes out of the right speaker whenever I lower the brightness of the screen. I have about the opposite happening for other people – whenever the brightness would be above 3/4, a buzz sound would come up. For me it's when the brightness is below 1/4. The lower the brightness, so higher the pitch of the buzz. How weird is that?
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Now I just noticed that the white noise is constantly here since the buzz appeared today (when I lower the brightness). Something is failing here I believe. It could also be the graphics card I guess?
Sometimes I get a very quick weird flash on the screen (black & white stripes I believe) for half a second, then they're gone. It's quite rare so it's hard to troubleshoot. Maybe it has to do with the Cinema Display as well. Or perhaps it is my graphics card (It's a Sapphire HD 7950 3 GB – the Cinema Display is connected with Mini DisplayPort). Or it might just be bad drivers for this card – they were never that good apparently.
Perhaps someone knows more than I do
All helps is appreciated…
Cheers!

No ideas?

MacBookPro5,2 mid 2009- display flickers and no contrast on start up

After low power shut down the display comes up flickering and looks bled out (as if the brightness is set way to high) Is this something anyone else has noticed? Is it a hardware problem I should be concerned about? Thanks
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Model Identifier:          MacBookPro5,2
Processor Name:          Intel Core 2 Duo
Processor Speed:          3.06 GHz

Hi ammartq,
Usually such a beep code means there is a problem and this has nothing to do with preinstalled OS version.
So I agree with Tonny and I think you need professional help from an authorized service provider to get rid of this because the guys have professional diagnostic tools to check the hardware.
You can find a list of authorized service providers here:
http://eu.computers.toshiba-europe.com > Support & Downloads > Find an authorized service provider
Good luck! :)

24" Cinema Display flickering and eventually going dark

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