Question about Apple Cinema Display 23" HD Monitor

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Image/screen shifting with mouse position

Have an older 23" Cinema Display with a dual G4.  when I move the mouse pointer past the middle point (horizontal or vertical) it shifts the entire screen about a millimeter up/down or left/right, causing blurring in the letters.  also notice that letters are blurry in the middle more than they are to the top/bottom/left/right.

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  • ariehl Aug 12, 2008

    I'm having the same issue. The screen just started misbehaving last night while using the computer. It seems that the screen is divided into four quarters, and depending on the position of the mouse, the other three will stretch distorting the images, on both vertical and horizontal lines. If I turn the resolution down to 1024x768 or lower, the issue seems to stop, but I can't work at that low resolution. The screen has not been disconnected for years, and power cycling the screen made no difference. 

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I realized my issue was that the screen was "slightly" zoomed in using the universal access panel in the system preferences. Turning it off, or zooming out completely solved the problem.

Posted on Aug 13, 2008

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Make sure that none of your pins a bent on the plug. Try changing your screen resolution or refresh rate.

Posted on May 29, 2008

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1 Answer

My 23" Apple cinema display (2002) has black screen and code flashes three short flashes. How do I find out if the monitor is dead or the power supply?


The only way to test is to use a known working power supply or known working cinema display with the parts you already have.

Dec 11, 2012 | Apple Cinema Display 23" HD Monitor

1 Answer

I bought a computer gateway dual core and I plug it to a CRT but the image that is displaying is not complete is like the screen does not fit the monitor how can I setup to get the complete image on the...


control panel - display - settings There is a slide bar on the lower left. slide it to the left and click apply. That will change the size of the display so all you need to do is find out what you like or what the 'native mode' is if you have a lcd monitor. That is the display size it want to have and should be show in the manual.

You may also want to click on advanced which will be to the right of that slide and then makre sure the display adapter has the right drivers. You may want to download and install the drivers directly from the manufacturers website. sometime windows update will install a update and it just doesn;t quite work so best to get the one from the factory if that is the case. Also make sure the monitor is in there correctly. Most major brands will let you download a inf file and make sure the only selections available are those that the monitor can safely handle.


Mar 23, 2010 | Relisys CRT TE786H 17 1600X1200 0.25MM

15 Answers

Apple Cinema Display 23" LED short-long-short flash prob.


Hello, I had the "short long short" blinking led problem with my 23" ACD after a power outage which left my screen blank and my cheek wet with a tear for my baby. I read somewhere that a guy was getting a 1 volt reading on the middle pin of his damaged 90 watt power block. I figured maybe the display might work if I could somehow block the middle pin. So I cut a small strip of paper wide enough to block just the middle pin and long enough to cover both sides, folded it to look like a "W" from the side. I then carefully pressed it into the brick receptacle with a toothpick leaving just a little slack so it would not tear when I pushed in the small white plug. It was a bit of a tight fit but guess what. IT WORKED! I am now enjoying my beloved monitor anew and saved $$$ on replacement brick or repair. If you want to try it and you feel you’ve nothing to lose, make sure you cover just the middle pin (both sides) and you may have to try a couple of times. It worked for me. I hope you have good luck too. Regards, Moozler

edit December 2016. Still working after 7 years.

***CAVEAT AND WARNING***
Use this fix at your own risk.
A faulty voltage regulator is probably the cause of failure. Voltage regulators can start a fire if too much voltage is applied.

Bud Martin's post below describes the electronic component failure that causes this problem. Thank you Bud.

Jul 19, 2009 | Apple Cinema Display 23" HD Monitor

3 Answers

The screen is half blue


You many need to reseat the Apple DVI to ADC Adapter that is connecting your Apple Cinema HD 23" to your Mac.

If that adapter is not properly seated, it can cause a color distortion with the display. Also, if the adapter is damaged, that can also impact proper resolution and color balance.

To try and resolve this issue for you, I have a procedure I would like you to try:

----------------------------------------------------------------
-SAFE BOOT MODE-

I am going to have you take your Mac into Safe Mode to see if we can't isolate what may be affecting your display's resolution.

Try these steps:

• Reboot your Mac
• Upon restarting your Mac, press the Shift key.
• Hold the Shift key until you see a White Screen with Gray Apple icon and eventually a spinning gear.
• When you see the Spinning gear, release the Shift key.
• Allow the Mac to continue booting up. Also this may take a little while
(NOTE: this may take anywhere from 5 to 15 minutes to load to the Safe mode screen depending on the performance of your Mac, but if it exceeds this time, shutdown your Mac and try just once more. It may have just frozen up the first time around for you.)

• You are going to enter the Safe Mode (which looks like your main desktop environment - the only difference is certain startup items are disabled.)

• Once within the Desktop in Safe Mode
• From the Finder Menu, click Go> Go to Folder
• Type in this line: /System/Library/StartupItems
• This path, is going to take you to the System Library folder which has all of your Mac OS X Startupitems.
• Remove all of those folders to the Trash.

*Reboot your Mac normally and see if you can access your normal User desktop environment.

--------------------------------------------------------------------
Here is an additional support reference for troubleshooting Apple Cinema Displays color or distortion issues.
Apple Support Link:
Calibrating your Apple Cinema HD Display for color accuracy
--------------------------------------------------------------------
This should help. If it does not let me know.

Regards,

-Mactechtrainer

Apr 24, 2009 | Apple Cinema HD 23" LCD Monitor

5 Answers

Apple Cinema Display 23"


Hi all,
I had the “short long short” blinking led problem with my
23′ ACD after a power outage which left my screen blank and
my cheek wet with a tear for my baby. I read somewhere that
a guy was getting a 1 volt reading on the middle pin of his
damaged 90 watt power block. I figured maybe the display might
work if I could somehow block the middle pin. So I cut a small
strip of paper wide enough to block just the middle pin and long
enough to cover both sides and it looked like a “W”. I gingerly
pressed it into the brick receptacle with a toothpick leaving
just a little slack so it would not tear when I pushed in the
small white plug. It was a bit of a tight fit but guess what.
IT WORKED… I am now enjoying my beloved monitor anew and saved
$$$ on replacement brick or repair.
If you want to try it and you feel you’ve nothing to lose, make
sure you cover just middle pin (both sides) and you may have to try a couple of times. It worked for me, I hope you have good luck too.
Regards, Moozler

Oct 31, 2008 | Apple Cinema Display 23" HD Monitor

1 Answer

Apple 23" cinema display


thats supposed to mean theres a faulty powerbrick, however i have the same problem on mine and replacing that didn't solve it

Oct 28, 2008 | Apple Cinema Display 23" HD Monitor

2 Answers

Apple Cinema Display 23" HD - Dust on inside of screen.


Well, I pretty much knew that the display would have to be disassembled to clean the dust out. I should have been more specific by asking if the display "could" be taken apart to clean it out, especially since the dust is in between the image and light source layers.

Jan 15, 2008 | Apple Cinema Display 23" HD Monitor

1 Answer

Mouse cursor moving by itself


In windows xp go into start menu, then into control panel then click on appearance and themes, then move your mouse over to mouse pointers click on it , uncheck "enhance pointer precision, and click apply, that will stop the mouse from acting crazy, this will work with dell mouse pointers and most.

Dec 28, 2007 | Compaq EVO N600C (Refurbished) 14.1" LCD...

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