9 Replies Latest reply: Oct 5, 2010 9:07 PM by paullopez
Show Joe Level 1 Level 1 (0 points)
Hi All,
I am looking for a little help. We just unboxed our new 27" iMac today and while I was configuring everyone's family accounts I noticed a large kidney shaped blurry spot in the middle of the screen. I realize from other posts that these things get really hot. Anyway after turning the mac off after cooling down the spot went away. I almost want to say it looked like condenstion behind the screen. The spot was most visible right after shutting down and then went away after about 20 mins. We are new pc converts and are really excited about this mac but to say the least it was disappointing! We got this unit through my wifes school in December 09' (she's an admin there) and hadn't opened it yet because of a remodel we just finished. Any help would be greatly appreciated!
Thank You!

PS I have downloaded all of the current updates

iMac 27", Mac OS X (10.6.4)
  • Dah•veed Level 7 Level 7 (32,945 points)
    Have you restarted the iMac? Did the blurry spot return?


  • Show Joe Level 1 Level 1 (0 points)
    Yes I did and it has not reappeared. I find it very odd??? Thank you for responding!
  • GlendaVi Level 1 Level 1 (0 points)
    Hello, I had the same problem but with my iMac 21". I call here in Costa Rica to customer service abd they told me it was normal but i think it isn't so i need some help... the problem didnt stop in my case
  • jros Level 1 Level 1 (50 points)
    I have the same "kidney look" spot in a section of my computer screen. I restarted, but did not solve the problem. I had this same problem several months ago, but it went away by the next day. Now I have it again.
  • RoryC Level 1 Level 1 (0 points)
    Hi All
    I have exactly the same issue, it just started this morning with my 27" Imac- and restarting does not help. Any other ideas, apart from sending the machine back to the shop? Is it related to moisture? Monsoon's just finished here and as the original poster noted, it looks a bit like mist or condensation.. It's very distracting! Any other advice would be much appreciated!
  • ckvkarma Level 1 Level 1 (0 points)
    We also face the same problem. It comes back again after restarting also. it is new iMac just 1 month old
  • Cedric Van Labeke Level 1 Level 1 (0 points)
    I am facing the same..on my imac 24".. first time seen today
    It's covering a big part of the screen and it indeed looks like condens/fog... .

    Model Name: iMac
    Model Identifier: iMac7,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.4 GHz

    Resolution: 1920 x 1200
    Depth: 32-Bit Color
    Core Image: Hardware Accelerated
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Built-In: Yes

    Think I have this one since 2008 somewhere... too soon to die now.. :\
  • Cedric Van Labeke Level 1 Level 1 (0 points)

    I shut down machine, let the large spot disappear.
    So it seemed to be a heating issue then I thought.
    Figured if it were the same issue as with an over isolated house without proper installation, it could well be a ventilation issue. So I vacuum cleaned every opening in case there would be any dust in any of the ventilation spaces block proper venting.

    So far so good.. let's see how it keeps... .


  • paullopez Level 1 Level 1 (15 points)
    I had this issue on 27" iMac. At first I thought it was dirt on the front glass, so I removed the front glass (per instructional videos on youTube) and found that the patches of grey were on the LCD itself. Careful lint cloth wiping of the LCD had no effet on the patches.

    I took the machine to Apple Repair center, demonstrated the patches to the staff, and the LCD portion was replaced under warranty. By that point (6+ months after purchase) the patches covered around 30% of the screen, but only visible when the background image was displaying a white/gray/light color; the patches were not evident otherwise.

    I'm not an expert, but I think this issue may be due to the LCD being incorrectly installed too close to components in the rear (or being loose), causing some kind of burn. Whatever the case, our monitors should not have color patches under normal operating conditions, so (in my opinion) this fix should be covered by hardware warranty.