iMac LCD

Discussion in 'iMac' started by Nighties, Jan 12, 2016.

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  1. Nighties macrumors newbie

    Nighties

    Joined:
    Jan 12, 2016
    #1
    I have 2 iMacs here- Mid 2007 and Late 2008: the late 2008 model had while lines down it indicating to me it has a broken LCD? Is it possible to use to the LCD from the 2007 iMac and install it into the 2008 iMac?

    Thanks
     
  2. bizzle macrumors 6502a

    Joined:
    Jun 29, 2008
    #2
    There is no Late 2008 iMac. If you meant Early 2008, than yes, those are interchangeable.
     
  3. Nighties thread starter macrumors newbie

    Nighties

    Joined:
    Jan 12, 2016
    #3
    Yes I meant early 2008, my apologies
     
  4. Brian33 macrumors 6502a

    Joined:
    Apr 30, 2008
    Location:
    USA (Virginia)
    #4
    Don't overlook the possibility that the problem may lie in the graphics card. I know a bit about the 24" Early 2008 iMac (I have one), and from my reading it seems that the graphics cards are the most frequent problem -- both the ATI Radeon 2600 HD and the Nvidia card (though my impression is that the latter fail more often and/or sooner). I've read about Gfx card problems that were described as "pinstripes," as well as other display anomalies.

    What screen size is your 2008?

    I have an image from the service manual for the 24" Early 2008 that shows the part numbers for the LCD panels and graphics cards; if that would be useful to you let me know. You might be able to find out the part numbers for the 2007. I would expect them to match if they are the exact same part.
     
  5. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #5
    That symptom can be indicative of a failing GPU and not display unit failing, and in fact, I'd suspect that over the LCD unit failing.
     
  6. Samuelsan2001 macrumors 603

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    Oct 24, 2013
  7. Nighties thread starter macrumors newbie

    Nighties

    Joined:
    Jan 12, 2016
    #7
    Hi there, they are both 20 inch screens, please see image attached to have a look at what you guys think! Thanks heaps
     

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  8. bizzle macrumors 6502a

    Joined:
    Jun 29, 2008
    #8
    The glass distorted the image some but if you are talking about the dark faded lines going vertical than that's the display.
     
  9. Brian33 macrumors 6502a

    Joined:
    Apr 30, 2008
    Location:
    USA (Virginia)
    #9
    So in this particular image, is it the wider dark/light alternating bands that go straight up and down, or the curving, narrower bands that seem to decrease in width?

    I'm guessing from your original description and bizzie's post, you mean the straight up and down bands.

    In any case, I'm afraid I can't tell whether the LCD screen or the graphics card is more likely to be the problem. I haven't encountered or read about any LCD failures, so I'm not sure how they would show up.

    I guess you can try the 2007 --> 2008 LCD swap and find out that way! It would also be good to find out if the graphics card can be swapped too, but I don't know much about the 20" models...
     
  10. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #10
    Have you tried using an external display?
     

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