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retta283

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Jun 8, 2018
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iMac #4 within 10 months with image retention issues. 1 2007 24" iMac, 1 2006 24" iMac, 1 2010 21.5" iMac, and 1 2010 27" iMac. These all display image retention or "ghost" images on their displays. The 2007 is by far the worst, within moments I have an image in it, and if I use a browser for more than about 30 minutes I end up with a sharp line on the display where the window border was, sometimes for hours and hours. 2006 has it too, but not as horrible. If I'm in iTunes for 10+ minutes and leave I can see the track names in the screen, but it fades fairly quickly.

The 21.5" has minimal retention. My Dock is always burned in, and I get a few light scenes of retention but not horrible. 27" I'm still testing with but it seems like after 5+ minutes a window is retained. This one does appear to fade much quicker thank the others. Going to test the browser retention on it, to see if it retains the border for a long time. I also have a 15" G4 that displays some retention but it's outside the Early Intel scope I'm in.

Now my question is, how on Earth can I have gotten 4 machines within 10 months affected by this? Now, doing research LG panels are the absolute suck, and both of my 24"s have them. The 24" actually seems to be Plagued with this issue quite specifically, forum threads here and elsewhere going back 14 years talking about this. However, on the 2009-11 series of iMacs I cannot find any info on retention at all. Unsure of panel type on the 21.5" would have to check, but the 27" seems to be a Samsung panel. I am using fan control programs on all of these machines and it doesn't seem to make any difference overall. This has gotten really tiresome. I will never buy another iMac again. Not unless I have to replace my trusty 2006 models I use in the backroom. I'm curious if any pre 2012 iMac owners have IR as well, please give your machine specs and if possible panel mmod info.
 
None of the early Intel iMacs I've had have had have had noticeable retention. That includes 2 2008 20" models and a 2009 27" (which had an i7 but still same era).

Kind of unrelated, but Cinema Displays are a different story for me. I have a 20" and a 23" that are fine, and a 23" that has REALLY bad retention (and a yellowish tint to the left side). What's weird is the date codes on the 23" boxes are only about a month away from each other IIRC.

Maybe old LCDs just suck. I wonder what causes some to have worse issues than others.
 
I should check and see what model LCD my 2008 24" has; I use it in my classroom to display my seating charts, so it sits there for 8 hours a day showing the same grid with different names on it. Going on a year of daily use doing that now, and I haven't noticed any image retention issues on it. Sorry to hear that mate.

My 2006 CD 17" on the other hand has the absolute worse LCD I've seen. Image retention, ghosting, the works :(
 
I should check and see what model LCD my 2008 24" has; I use it in my classroom to display my seating charts, so it sits there for 8 hours a day showing the same grid with different names on it. Going on a year of daily use doing that now, and I haven't noticed any image retention issues on it. Sorry to hear that mate.

My 2006 CD 17" on the other hand has the absolute worse LCD I've seen. Image retention, ghosting, the works :(
I don't have much to add, but I just need to say - @MultiFinder17, I love your signature!
 
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As promised, here's my 2008 24" iMac. This machine would be the most likely of all of mine to have image retention issues; it is used to show my seating chart, so it shows this for 8 hours a day with only the names changing every hour or so. It's done this for the last several years. My 5th period this year is all eLearning, hence the Virtual Placeholder students.

IMG_0408.jpg

I switched it over to another space where I blew up a blank TextEdit document to get a nice white screen, and after having that grid displayed for hours on end, this is how it looked.

IMG_0412.jpg

No retention issues that I can see! I've been impressed by this machine; I was initially worried that showing the chart all day would permanently screw the screen, but it hasn't been an issue thus far. The big fella runs great!
 
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I have a 2006 17", and a 20" G5 that doesn't seem to have retention. My 23" Cinema Display (ADC) has it real bad though. My gf daily drives a 24" 2009 that doesn't have any retention that I've seen either.
 
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