any had a shading on iMac screen like this ?

Discussion in 'iMac' started by liquorice, May 8, 2014.

  1. liquorice macrumors regular


    Jan 31, 2012

    this is a 2011 iMac already had one screen change with a similar screen problem.
    doesn't show up im a pixel check, but can see it in the login screen and also noticed it while watching a video.

    Am due in for the DVD drive change so shall add this to the list, so thats two graphics card changes one DVD drive to be changed and it looks like another screen.
    Glad I took out applecare, unfortunately it runs out the beginning of next year :(
  2. MrGimper macrumors 603


    Sep 22, 2012
    Andover, UK
    Not sure what Apples policy is, but with all those issues are there grounds to have your machine replaced?
  3. liquorice thread starter macrumors regular


    Jan 31, 2012
    I won't hold my breath for that as last time I was in all they offered was a percentage off another iMac, but my Mrs is going to take charge and should be fun :D

    She hates Apple by the way :eek:
  4. Talarspeed macrumors member

    Dec 12, 2009
    Mine is a late 2009, and yes this scenario crept up in the middle of my screen about 5 months ago. It also seems to come and go; some days it seems faded. My iMac is out of warranty now, so I figured it is something to live with until I buy a new one next year.

    Does anyone know what is causing it?
  5. Chippy99 macrumors 6502a

    Apr 28, 2012
  6. ATC macrumors 6502a

    Apr 25, 2008
    I had something that looked identical to the OP's on my '09 iMac's 24" screen but it was in lower left area (when I took the picture of it, based on lighting/cam settings etc... the pic looks slightly different but in person it looks the same as the OP's - pic below).

    Apple replaced the screen without any issues (during AC period) and the genius said that this was not an uncommon problem with iMacs (he'd seen it many times, said it was due to heat build-up inside that cause part of the LCD to fade). I also could mostly only see it on log-in screen or whenever the desktop was showing a plain colored background. I keep my iMac in a dust-free area and I clean it often so it wasn't dust build up that caused the heat issue.

    Anyhow, that's why I don't plan to replace my iMac with another, going forward it'll have to be a desktop with standalone LCD (Mac Pro or mini).

    Attached Files:

  7. jaxhunter macrumors regular


    Dec 14, 2012
    If you do take it back in have them replace the backlight board as well. The backlight board could be over- or under- volting the backlight and causing issues.

    Also, make sure they clean the inside of the glass panel as well.

    However, this could just as easily be caused by dust scoring the LCD panel. make sure you keep your work space as clean as possible and don't smoke around it.

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