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Old Mar 23, 2013, 01:09 PM   #1
Sankel
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Exclamation Burned in image iMac late 2012 (27")

Just opened my SimCity on my new late 2012 (27") iMac, and suddenly i see some burned in image of facebook of my browser

What do I need to do? And how is this possible?
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Old Mar 23, 2013, 02:27 PM   #2
TV Cameraman
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Please post the exact specs of your machine.

If you search for "iMac Image Retention" you'll find that this is an unfortunate problem that is plaguing some of the 27-inch late 2012 iMacs.

Since it's not happening to everyone out there, I'm trying to see if this is only afflicting a certain combination of custom configurations.

Are you using an i7 processor?

Again, please post the exact specs of our iMac.
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Old Mar 23, 2013, 02:46 PM   #3
stevefo
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It seems you would have had to have facebook open in one page for days straight without moving a page. That's messed up! I will absolutely get the 3 year warranty now!!!!!!!

----------

Apple says it's normal. Read here:http://support.apple.com/kb/HT5455
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Old Mar 23, 2013, 03:37 PM   #4
Sankel
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Quote:
Originally Posted by TV Cameraman View Post
Please post the exact specs of your machine.

If you search for "iMac Image Retention" you'll find that this is an unfortunate problem that is plaguing some of the 27-inch late 2012 iMacs.

Since it's not happening to everyone out there, I'm trying to see if this is only afflicting a certain combination of custom configurations.

Are you using an i7 processor?

Again, please post the exact specs of our iMac.

Hi, thanks for replying.

My iMac specs are;

3,2 Ghz i7
8 Gb memory (standard from apple)
3TB Fusion Drive
Nivdia Geforce GTX 680 MX 2Gb

(also installed windows bootcamp with fusion drive)

I'm calling Apple on monday for maybe any support or so..
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Old Mar 23, 2013, 03:51 PM   #5
martinm0
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I've had this happen on a number of 2012 iMacs. I've been through 4 of them and 3 had IR issues and all had odd issues with Target Display mode and the backlight sometimes activating, but most of the time not.

The IR would generally happen anytime I had a second monitor running from the iMac and had been using it for a number of hours (not a static screen for hours, but just constant use and no hibernation). I could tell when it would start to happen simply because I could interlacing in the screen on the mac desktop image.

Some machines were worse than others, but it seems to happen to far too many to ignore for me. I'm finally returning the 4th one and just getting a refund. This one has not been bad at all, but has shown IR twice in the two weeks I've had it and the Target Display issues are just concerning as well.
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Old Mar 23, 2013, 03:52 PM   #6
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What other devices do you have connected to your iMac? I want to know everything there is about it. Do you have a second display connected?
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Old Mar 23, 2013, 04:15 PM   #7
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Originally Posted by WilliamG View Post
What other devices do you have connected to your iMac? I want to know everything there is about it. Do you have a second display connected?
From the looks of your forum interest and posts you're a fairly intelligent chap. Please lets remain so - this is an issue caused by faulty screen manufacture.

No matter what is connected to the logic board, what programs you have used or even sites you have been browsing will cause this issue.

I will make one leap - I bet it's LG displays just like the Retina Macbooks.

The graphics card is also not the culprit - if it were processing a different screen over an exisiting app, game whatever, then why on earth would it produce a faint - ghosted image so similar to polarisation of a panel?

This is the same issue MacBook Retina owners are/have faced.

The fact that LG have still not moved to fix this is poor.

Asking the OP machine spec will not be of any help unless we can some how ascertain the panel manufacturer, anyone a terminal junky?

Last edited by All Taken; Mar 23, 2013 at 04:20 PM.
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Old Mar 23, 2013, 04:23 PM   #8
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Quote:
Originally Posted by All Taken View Post
From the looks of your forum interest and posts you're a fairly intelligent chap. Please lets remain so - this is an issue caused by faulty screen manufacture.

No matter what is connected to the logic board, what programs you have used or even sites you have been browsing will cause this issue.

I will make one leap - I bet it's LG displays just like the Retina Macbooks.

The graphics card is also not the culprit - if it were processing a different screen over an exisiting app, game whatever, then why on earth would it produce a faint - ghosted image so similar to polarisation of a panel?

This is the same issue MacBook Retina owners are/have faced.

The fact that LG have still not moved to fix this is poor.

Asking the OP machine spec will not be of any help unless we can some how ascertain the panel manufacturer, anyone a terminal junky?
Hey now! There have been numerous reports from forum members that having a second display attached causes some IR. The reasons for this I have no idea. That's all I was getting at in my response.

e.g.

http://173.192.77.187/showpost.php?p...4&postcount=38

FYI all 27" iMacs use LG panels.
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Old Mar 23, 2013, 07:57 PM   #9
Sankel
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Originally Posted by WilliamG View Post
What other devices do you have connected to your iMac? I want to know everything there is about it. Do you have a second display connected?
I use a scarlet 2i2 external soundcard. No second screen and a Logitech wireless mouse.

I don't think that my external accessories may affect the screen of my iMac?
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Old Mar 23, 2013, 10:24 PM   #10
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I've set-up about 10 2012 27-inch for a client. Noticed on about 7 of them have Image Retention issues.

Theyre all the same model.
27-inch, 3.2Ghz i5, 1TB HDD, Base-model 27-inch.


Nothing even has to be open for the problem to arise. noticed on a idle machine, went to log out and the desktop was ghosted over the login window.

otherwise fantastic machines. terrible production quality from the display manufactures.
Apple is apparently claiming this as "normal". Dont buy that.
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Old Mar 24, 2013, 01:11 AM   #11
WilliamG
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Quote:
Originally Posted by Sankel View Post
I use a scarlet 2i2 external soundcard. No second screen and a Logitech wireless mouse.

I don't think that my external accessories may affect the screen of my iMac?
Can you try disconnecting that external soundcard and seeing if it makes a difference? I know it's a weird one, but humor me here...

Quote:
Originally Posted by AppleNewton View Post
I've set-up about 10 2012 27-inch for a client. Noticed on about 7 of them have Image Retention issues.

Theyre all the same model.
27-inch, 3.2Ghz i5, 1TB HDD, Base-model 27-inch.


Nothing even has to be open for the problem to arise. noticed on a idle machine, went to log out and the desktop was ghosted over the login window.

otherwise fantastic machines. terrible production quality from the display manufactures.
Apple is apparently claiming this as "normal". Dont buy that.
That kind of luck is crazy. I've had six 27" 2012 iMacs in my office at various times, and not a single one has had image retention.
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Old Mar 24, 2013, 02:17 AM   #12
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Quote:
Originally Posted by WilliamG View Post
That kind of luck is crazy. I've had six 27" 2012 iMacs in my office at various times, and not a single one has had image retention.
It makes sense, in a way, theyre probably all from the same batch. we're expecting replacement iMacs in the next week or so.
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Old Mar 24, 2013, 03:57 AM   #13
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No IR here,
27" 3.2GHz i5, GTX680MX 2GB
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Old Mar 24, 2013, 04:12 AM   #14
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I gave up after the 4th replacement 27" I had suffered from it also. Now I just have accepted it.
It is a great machine, but I got sick of having to setup a new iMac every 3-4 weeks.

It does seem to happen semi-randomly. When I want to reproduce it I can't, and when I am just working away it will sometimes occur.

Very annoying, but I can live with it for now..
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Old Mar 25, 2013, 10:09 AM   #15
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I just received my iMac 27-inch today. 3.4GHz i7, 24GB Memory, 3TB Fusion and 680MX 2GB graphics. Happy to report that there were no image retention issues after doing the test, bootcamp install also went without a hitch. Windows 8 by the way.

Couldn't be more pleased.
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Old Mar 25, 2013, 02:32 PM   #16
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i dont care if no one believes me or not but ALL iMacs have SOME image retention some are worse than others. Like some of them you really need to look for it but they all have it, ive so far tested around 20-25 of them they all have them to a certain point.
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Old Mar 25, 2013, 09:14 PM   #17
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This seems the most relevant place for me post this comment. What displays are the new iMacs using are they LG or Samsung?
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Old Mar 25, 2013, 09:35 PM   #18
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This seems the most relevant place for me post this comment. What displays are the new iMacs using are they LG or Samsung?
They're all LG. Samsung doesn't make 27" IPS panels. Their 27" panels are MVA and PLS. Image retention is nothing new with the 27" iMacs. I have seen 2009 27" iMacs with terrible image retention. The interesting thing is that Dell has used the same 27" LG panels as Apple, and image retention doesn't seem to be an issue with them.
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Old Mar 25, 2013, 09:37 PM   #19
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Old Mar 26, 2013, 08:29 AM   #20
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Originally Posted by drambuie View Post
They're all LG. Samsung doesn't make 27" IPS panels. Their 27" panels are MVA and PLS. Image retention is nothing new with the 27" iMacs. I have seen 2009 27" iMacs with terrible image retention. The interesting thing is that Dell has used the same 27" LG panels as Apple, and image retention doesn't seem to be an issue with them.
you probably dont see any image retention on the dells because of 3 inches of antiglare coating on the screen. the grain washes it away. =P
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Old Mar 26, 2013, 12:05 PM   #21
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Originally Posted by edry.hilario View Post
i dont care if no one believes me or not but ALL iMacs have SOME image retention some are worse than others. Like some of them you really need to look for it but they all have it, ive so far tested around 20-25 of them they all have them to a certain point.
I want to echo this. I went through 4 units that all had image retention\persistence before giving up and asking for a full refund. I worked with an Executive Customer Support agent that finally told me after my 4th unit that ALL 2012 iMacs WILL show some level of image persistence because of the fact that they're using IPS displays. I'm not a display expert in any way so take that as you may. I'm just speaking from my experience and from what Apple is telling me. I know that some people are claiming to have perfect screens with no persistence issues but Apple stance seems to be that persistence will occur because it's inherent to IPS displays.

Quote:
Originally Posted by drambuie View Post
They're all LG. Samsung doesn't make 27" IPS panels. Their 27" panels are MVA and PLS. Image retention is nothing new with the 27" iMacs. I have seen 2009 27" iMacs with terrible image retention. The interesting thing is that Dell has used the same 27" LG panels as Apple, and image retention doesn't seem to be an issue with them.
In my experience with the 4 units that I mentioned above it seemed like the IR would occur after the unit was on for a while. I think heat has something to do with it. Perhaps this new super thin redesign doesn't do as good of a job at dissipating the heat away from the display as other models or Dells offerings.
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Old Mar 26, 2013, 12:18 PM   #22
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I want to echo this. I went through 4 units that all had image retention\persistence before giving up and asking for a full refund. I worked with an Executive Customer Support agent that finally told me after my 4th unit that ALL 2012 iMacs WILL show some level of image persistence because of the fact that they're using IPS displays. I'm not a display expert in any way so take that as you may. I'm just speaking from my experience and from what Apple is telling me. I know that some people are claiming to have perfect screens with no persistence issues but Apple stance seems to be that persistence will occur because it's inherent to IPS displays.



In my experience with the 4 units that I mentioned above it seemed like the IR would occur after the unit was on for a while. I think heat has something to do with it. Perhaps this new super thin redesign doesn't do as good of a job at dissipating the heat away from the display as other models or Dells offerings.
It still seems to me that the folks here that have image retention in their homes/offices have image retention with ALL their replacements, too, which leads me to believe something else is afoot. I can't say this for sure, of course, but...

In my case, I've used six 2012 27" iMacs and not a single one had anything like image retention, and they were used quite heavily too to test, including torture tests with that grid-pattern from one of the other threads. I've NEVER seen IR on my 2012 iMacs, and I've also never seen it on my 2009 27" iMac which I used for 3 years straight, and never ever got shut off.

Note I'm extremely picky about my devices, so if IR would ever to occur I'd pick up on it immediately.

So what's going on here?
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Old Mar 26, 2013, 05:51 PM   #23
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Willam make a video not screen recording but a recording of the iMac itself turn off screen savers and set the screen to never shut off go to a site with a white background like vimeo or something that has mostly white. Make that page half screen leave it there for 10 mins then go to choose a color for your background make it gray come back to this forum and show the video uncut and share it with us ill believe it when I see it. Like I said some will have worse than others but they ALL have this problem if you this you will find this out too. Now weather you don't want to look for it or not that's a whole other issue.
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Old Mar 27, 2013, 01:50 PM   #24
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Willam make a video not screen recording but a recording of the iMac itself turn off screen savers and set the screen to never shut off go to a site with a white background like vimeo or something that has mostly white. Make that page half screen leave it there for 10 mins then go to choose a color for your background make it gray come back to this forum and show the video uncut and share it with us ill believe it when I see it. Like I said some will have worse than others but they ALL have this problem if you this you will find this out too. Now weather you don't want to look for it or not that's a whole other issue.
Your wish is my command. I took a video of this for about 13 minutes or so, recorded with the iMac at max brightness. No image retention. Feel free to watch the video. Note I've also done this for far, far longer in the past, using the grid-pattern test as well.

http://www.youtube.com/watch?v=06waD...ature=youtu.be

*EDIT*

While the first video was uploading, I did the grid pattern test, too, for just under 10 minutes (I got bored). No image retention. A while ago I ran this image for almost an hour with no image retention.

http://youtu.be/vmnuW8-AOz0

This is the image I used:

http://www.marco.org/rmbp-irtest.html
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Old Mar 27, 2013, 02:05 PM   #25
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Originally Posted by WilliamG View Post
Your wish is my command. I took a video of this for about 13 minutes or so, recorded with the iMac at max brightness. No image retention. Feel free to watch the video. Note I've also done this for far, far longer in the past, using the grid-pattern test as well.

http://www.youtube.com/watch?v=06waD...ature=youtu.be

*EDIT*

While the first video was uploading, I did the grid pattern test, too, for just under 10 minutes (I got bored). No image retention. A while ago I ran this image for almost an hour with no image retention.

http://youtu.be/vmnuW8-AOz0

This is the image I used:

http://www.marco.org/rmbp-irtest.html




hey William ! what are the rest of you specs ?
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