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2008 iMac Graphics Card Issue?

627 Views 10 Replies Latest reply: Feb 4, 2013 3:35 AM by yoyomarv RSS
Dan the 480 Man Level 1 Level 1 (0 points)
Currently Being Moderated
Jan 4, 2013 1:25 PM

Hi people.

 

I have recently noticed some lines on the screen of my iMac. It's a early 2008 20" Alu IC2D iMac, 2.4Ghz with a standard ATI Radeon HD 2400 XT 128 MB graphics card. The lines are very faint, but my concern is that they may become worse. The seem to be around the left hand side of the screen-they aren't dead pixels either: they are more like a 'hue' running from top to bottom. I haven't been able to capture a picture myself, but have seen this online, and the ends of the arrow heads show these lines, which are nigh-on identical to mine:

 

http://img.photobucket.com/albums/v520/DanThe440Man/Apple%20Stuff/file-11.jpg

 

Can anybody shed any light on this issue? Was there ever a recall or known issue? I have seen plenty of posts dotted around the internet regarding graphics card failures, and plenty of people complaining that when problems were posted on these Apple discussion boards that they posts were removed/deleted. What concerns me is that the problem may get worse, and I'll end up with a dead or un-functional iMac with no way to repair it.

 

A lot of the problem iMacs seemed to be from the 17" '07 to 20" '08 iMacs, with serial numbers starting 'W8xxxx', which mine does. If this is the beginning of the end, I'm disappointed as the iMac itself has only ever had light use as a home computer.

 

Any help appreciated,

 

Daniel

  • Allan Jones Level 7 Level 7 (29,610 points)
    Currently Being Moderated
    Jan 6, 2013 10:48 AM (in response to Dan the 480 Man)

    This is a higher level of support where such matters are usually better handled:

     

    Apple Customer Relations 1-800-767-2775

     

    Worth a try in you are in North America

  • Peter Stubbs Level 1 Level 1 (65 points)
    Currently Being Moderated
    Jan 6, 2013 1:30 PM (in response to Dan the 480 Man)

    Sounds like the graphics card maybe on its way out in which case there is nothing you can do about it as it is part of the logic board. I had an early 2008 24" iMac whose graphic card went up in smoke last year. I would be interested in more detail re Apple saying that there had been an issue which they were aware of, but the cut-off for the repair program was 2011?

  • Peter Stubbs Level 1 Level 1 (65 points)
    Currently Being Moderated
    Jan 7, 2013 10:11 AM (in response to Dan the 480 Man)

    Ok let me know if you find out anymore info. Mine was a Nvidia card which Nvidia admitted had an inherent overheating issue and Apple admitted it for their laptops but not for the iMac.

  • Peter Stubbs Level 1 Level 1 (65 points)
    Currently Being Moderated
    Jan 15, 2013 12:05 PM (in response to Dan the 480 Man)

    Hi Dan not surprised really. Thanks for letting me know.

  • yoyomarv Calculating status...
    Currently Being Moderated
    Feb 4, 2013 3:17 AM (in response to Peter Stubbs)

    Just to clarify... Radeon 2400XT is a separate graphics part. It's not soldered to the logic board.  A quick search of your favorite auction site will confirm it.

     

    The only soldered graphics in post-2006 iMacs are 9400M & likely the latest releases. 

  • yoyomarv Level 1 Level 1 (0 points)
    Currently Being Moderated
    Feb 4, 2013 3:35 AM (in response to Dan the 480 Man)

    If you're unable to duplicate it in a screen cap, then it's likely your LCD panel which is cheaper & much easier to replace than the graphics part, when repairing outside of warranty.

     

    The left side of your particular unit is where the CPU & GPU heatsinks are situated.  When dust clogs up the cooling fins that services those parts, you'll likely see the effects on your LCD as heat builds up.

     

    Hopefully, the damage isn't permanent.

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