Graphics card changing

Discussion in 'iMac' started by Danman6523, Oct 28, 2008.

  1. Danman6523 macrumors newbie

    Joined:
    Oct 28, 2008
    #1
    Ive seen multiple threads discussing about a broken graphics card on iMac and the result was having to replace the whole logic board because the graphics card is soldered on the logic board. Now I was thinking about this and was wondering why can someone just unsolder the graphics card and install a replacement or a better card(if it wouldn't a nice drop in replacement, I think that one could just use wires to make the connections). I noticed on other discussions on processors that they are touchy and need some kind of calibration for the heat they take and it requires a special non public program if one would replace them and that problem might include the graphics card.

    But if it is just dab here and there and pick up the old one, put in the new one with a few more dabs, I don't see why it is impossible to change the card. If you have to replace the whole logic board it might be worth it to try replacing the graphics card. You would still have to buy a replacement logic board. But, most likely there is some odd problem that prevents one from doing it, but I can't imagine a little time and patience can't solve that problem.
     
  2. AlexisV macrumors 68000

    AlexisV

    Joined:
    Mar 12, 2007
    Location:
    Manchester, UK
    #2
    You're first problem is unsoldering the chip, which ain't easy.

    It might be possible, but the chance of failure is so high, I don't think anybody's been willing to risk their money.
     
  3. isx macrumors member

    Joined:
    Sep 24, 2008
    #3
    Well if the pro repair guys have to replace the whole board i should think that its a bit harder than you think it is.

    The chip alone would most likely have 20-30 legs each side, so 80-120 miniscule solder points. If one of them were to bridge -BOOM-! goodbye chip and board.

    Plus goodbye warranty. Does't seem worth the risk and I don't think anyone's attempted it so far.
     
  4. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #4
    These days the boards are assembled by machine, which can do very tight tolerances. It is all but impossible to fix it by hand. It's not like the old days when people did a lot of the work.
     

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