iMac 24 Aluminum screen burn-in?

I've had the same problems with my 24" screen.

http://h4xr.org/xh9t
http://h4xr.org/r2hb

I've had my screen replaced and now the problem is gone. But now I have tons of stuck subpixels so this iMac needs another screen replacement. :/

I also have the burn-in effect happening on my < 1yr old iMac. Fortunately, I found something that makes it almost unnoticeable. I created a screensaver which "exercises" all the pixels on the screen. It consists of 6 maximum intensity solid color files and 1 black, dimensioned to 1920x1200. They are: red (#FF0000), yellow (#FFFF00), green (#00FF00), cyan (#00FFFF), blue (#0000FF), magenta (#FF00FF) and black (#000000). They are all in a folder which the screensaver cycles through for a couple of hours before going into power save. I've only been doing it for a couple of days now, but the burn-in is now almost undetectable.

I have the same issues and as you have stated it goes away after running the screen saver for a few minutes. When I first noticed this a few months ago I was freaked out, but as I said, once the screensaver kicks on it goes away.

--Brian

I have a 24" White 2.4GHz iMac and have this problem which is quite serious, esp when using Windows via Bootcamp. The Windows "taskbar" stays on the bottom of the screen, and any icons on that taskbar "burn in" to the screen. But that's not all. If a window stays in the same place for any length of time it's edges seem to burn in, so that when it's eventually moved I can clearly see the window in what appears to be outline. This is new to me, and I did not notice this on this machine until quite recently.

The "persistence" note on the Apple site (linked above) is wholly inadequate as a response to the problem. I mean, I could be certain to move everything on my desktop every 3 minutes and that would probably take care of the problem, but that doesn't seem a reasonable solution.

Any other ideas pending?

I have the white 24" iMac. It just started experiencing this & it has gotten quite annoying, so I will bringing it in on Monday.

I took several photographs to show the problem & help my case along. As with others it does seem to (not quite) go away after sitting idle over night & I'm certain when I bring it in (after being off for some time) it will look somewhat normal.

I also have 4 stuck pixels (been then since I bought it) and what can best be described as a muddy appearance mostly in the mid lower part of the display.

I do a fair amount of Photoshop CS4 & Lightroom 2 work. I'm tired of trying so clean up the images only to find it is not my image that has the problem!

Steve

just wondering how its getting on now, i thought mine had gone away but it came back of all things, only over darker colours though, on whites its almost unnoticeable but its still enough to bother me. do you think this is a problem apple care would sort out

I too, have a line in which it appears that the log-in screen has burned in. I called my Apple Tech guy today and he said its quite possible. As I always leave my screen with the login window on he said it can burn in. He said that I should turn it off for 24 hours and see if it still appears and if so bring it down.

I think there's a presumption that these LCD don't do this anymore ... I was quite shocked. I bought my iMac in May of this year.

I also have this problem. My power supply temperature sensor was reading 81oC (almost 179oF!).

I've also got a problem with screen burn in. Mine is the log in window as per the previous post.

Bought my imac in Nov 2007. Only started having problems with it in the last month or so. First the spinning beach ball and now this.

Before going off on a Christmas holiday for 3 days I installed 10.5.6 and then shutdown the machine. When I cam back the machine was on at the login screen. And guess what... screen burn in of the login screen. I have tried the following fixes:

1. White screen saver for 12 hours = Didn't work or diminish the problem

2. Fan control software as suggested in previous posts = imac not running hot c.109F. Did an air dust and not much came out. With the fan running (like a jet engine!) got the temp down to 99F. Anyway, didn't fix the problem.

3. Tried the jscreen stuff and that hasn't had any effect

4. Reset power management, pram etc just to see if it was a glitch in the software etc. = no fix

5. Reset resolution and problem still there at the same location.

This is pretty annoying considering the cost of these machines. I can see the login screen everywhere! I personally blame the OS because a shutdown should be just that and it never has the whole time I've had this machine. The only way to truly turn the imac off is to pull out the power cord.

Has anyone had any luck in getting rid of this issue? I do not have applecare so I'm guessing Apple aren't going to have much sympathy?

I purchased my 24" Aluminum 2.8Ghz iMac in October of 2007. I have this very same screen burn in issue, and have had it fixed 4 times now.

Just today, the issue started up again. I am officially fed up with making trips to the Apple Store to fix this same issue over and over again. At this point I have no confidence that the issue will ever be fixed, and as soon as my AppleCare expires, I'll be stuck with a lousy product.

I will never purchase another iMac, nor will I allow any of my family to purchase one, and I will do my level best to strongly urge anyone else that I come across not to purchase one.

I traded down to this iMac from my Power Mac G5. That was the best computer I have ever owned, and I sorely regret selling it to get this iMac.

I've also got this problem on my iMac with 8800GS graphics card.

In my recent experience regarding this issue, I think that Apple must consider this problem seriously.

Last June in 2008, I purchased the 24" 3.06GHz iMac and one month later, I found the black lines(persistence, burn-in, or whatever called) at the upper-left position of the display. I guess the black persistence came from firefox toolbar line.

http://www.flickr.com/photos/sontop/3220884549/

The service center evaluated as the LCD panel defect and replaced it with new panel on November, 2008. It seemed okay but just one month later, the exact same black persistence at the upper-left position occurred again.

http://www.flickr.com/photos/sontop/3220891379/

Since I strongly insisted that my iMac should be replaced entirely, now I have new iMac with new 1 year warranty. But I feel still skeptical whenever I look at the upper-left part in the display, which makes me irritated. Also when I read many postings about this iMac display issue in various Apple-related forums, I have strong misgivings that I will meet the same issue again near future.

It seems to happen mostly in 24" display with NVIDIA GeForce 8800 GS card. Also at the upper-left position(bad arrangement or heating). Now I do everything you guys suggest-white screensaver, fan control, turning down LCD brightness, etc.

BUT above everything else, the Apple should find out the problematic part-lcd panel or graphics card or whatever-ASAP, then those must be recalled!

I'm with you!
I've had mine fixed before and now the problem seems to have come back. It gets worse over time so I'm waiting until it's unbearable before I send it for repair again.
Getting it recalled would be a major achievement though!
I'm an Apple fan boy but I am not an idiot. This is unacceptable.

How can we take it further? Higher up the chain of command?

I have the same Issues... 😟 after a few hours of work if I leave a window in the same place I will see buttons and other text from the window.