24" iMac issues

Discussion in 'iMac' started by bumzo1, Mar 20, 2010.

  1. bumzo1 macrumors 6502a

    Joined:
    Jan 31, 2009
    Location:
    Dallas, TX
    #1
    I have a 24" iMac that just turned a year old yesterday. I do have Apple care and it has been having some problems lately. Firstly I have been noticing some pretty significant burn in issues primarily on the left side. Thats where my ichat normally sits so when on a grey background I can see a burnt in image of my ichat list. There is also a very noticeable line across the top. When I turn down the brightness it also makes an annoying hum that isn't present when at full brightness. Also the speakers will randomly make a high pitched noise which can be resolved by playing some music. and lastly every once in a while my computer will wake up from sleep and the screen will be frozen which requires me to hard shut it down. So what do you think I should do and does it warrant apple care attention?
     
  2. Matthew Yohe macrumors 68020

    Joined:
    Oct 12, 2006
    #2
    The burn in issue is present on all 24" iMacs. It unfortunately only takes a few hours to burn in and many more to go away.

    Don't know about your other issues.
     
  3. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #3
    It was pretty common for my old G5 20 incher to get burn ins after not so long a use as well. Luckily the screen "fixed" itself over time, and the burn-ins eventually disappear. Hopefully the 24 inch is like that as well!
     
  4. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #4
    The "burn-in" you are experiencing is actually image retention. It will eventually go away if you have a more varied screen (like using a screen saver or watching movies). The hum due to brightness sounds like a bad inverter board. Its an easy fix for Apple. THe freezing on wake-up could be a GPU or logic board problem. If your Apple Hardware Test (Press D on boot up with the original install DVD in the DVD drive) doesn't show anything, let Apple take a look at it.

    EDIT: Just thought of one other thing to try for the freezing. Reset your PRAM (see sig).
     

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