dirt inside the glass 21.5" iMac

Discussion in 'iMac' started by flying.wakeke, Mar 12, 2011.

  1. flying.wakeke

    flying.wakeke Member

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    my iMac has some dirt apparently inside, i don't know if its dirt or some pixels but whenever the screen displays on bright white its seen. is the dirt coming from the hole behind the iMac? or something. is this common? thanks,
     
  2. donevan

    donevan New Member

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    i have the same problem. it's actually very visible when i restart my imac. i'm thinking of visiting an apple store soon to see if they have a solution. afaik this should be covered under applecare.
     
  3. cybersniper

    cybersniper PhilMUG Addict Member

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    it cannot be from those holes behind. - possible entry points going to the LCD are completely sealed. (I know, because I've already upgraded an iMac's drive (HDD to SSD), and in doing this, you have to take off the glass screen cover and the LCD panel itself in order for you to access the storage bay.

    ^this applies to aluminum iMacs.

    ---

    if that's just dirt, all you need is a pair of suction cups to take off the glass, then just clean it and put it back in place.
     
  4. Salaryman Ryan

    Salaryman Ryan PhilMUG Addict Member

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    Chances are it is an LCD screen burn in. There are several threads about it here and in other forums. Some of our iMacs also suffered this defect a year ago and their screens was replaced via Applecare. If you go to places like PowerMac Trinoma and Megamall, some of their display iMacs and even Glass Cinema display have this defect. If you are still under warranty I suggest you take it to a service center and have it fixed there - they may replace the whole screen.

    One sample of a case similar to yours:

    http://www.philmug.ph/forum/showthread.php?t=56677

    HUGE thread in Apple discussion board about it:

    http://discussions.info.apple.com/t...6A429AC8B8.node0?messageID=12193525&#12193525

    This problem affects ALL Aluminum and Glass models unfortunately
     
  5. smokinpope

    smokinpope New Member

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    I have the same problem. The dirt looks like grey smudges and is very visible against a white screen. The smudges will not come off despite my cleaning both inside and outside the glass panel.

    These smudges are caused by dust behind the LCD panel (not behind the glass) and on the backlights. It is a very widespread problem. Check out these forum posts and YouTube videos:

    http://discussions.apple.com/thread.jspa?threadID=1915086&start=0&tstart=15

    http://discussions.apple.com/thread.jspa?threadID=2150293

    http://discussions.apple.com/thread.jspa?threadID=2300580&tstart=0

    http://www.youtube.com/watch?v=glVKpMADAdU&feature=related

    There is a possible fix in the link below, but you'll need a lot of guts. You'll need to open the LCD itself and access the backlights. I haven't tried it myself.

    http://forums.macrumors.com/showthread.php?p=11976152&posted=1#post11976152

    Does anyone know of an Apple repair center that cleans behind the LCD?
     
  6. dragonheart

    dragonheart Member

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    I had the same problem and I brought it to apple and they will replace the LCD. I am just waiting for the replacement LCD to arrive.
     
  7. mikaelrules

    mikaelrules Member

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    Very common problem. I brought my iMac in for the same problem and they replaced the LCD. Yet a few months again after, I see it slowly creeping back.
     

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