Can I use my iMac as monitor without replacing its broken video card?

Discussion in 'iMac' started by Declanimation, Jul 24, 2015.

  1. Declanimation macrumors newbie

    Declanimation

    Joined:
    Jul 24, 2015
    Location:
    Brisbane, Australia
    #1
    I have an old late 2009 27" iMac with a wrecked video card. I've never bothered to fix it because it broke around the same time I got myself a new Mac Pro, but I've been thinking I'd love to use it as a second monitor.

    Can anyone advise me re whether or not this is doable?

    From what I've read online, it's generally possible to turn an iMac into a monitor using a thunderbolt cable, but I'm wondering specifically if it's possible to do it if it's got a bung video card. Thunderbolt cables are a bit pricey, so I wanted to ask here before going out and buying one.

    Thanks!
     
  2. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #2
    You don't need a thunderbolt cable, Display port (or DVI as it's 2009) cables or adapters are what you need check your mac models specs.

    I am not sure on the use with a busted graphics card but I don't think it'll work if you cant get the computer to boot up...
     
  3. rkaufmann87 macrumors 68000

    rkaufmann87

    Joined:
    Dec 17, 2009
    Location:
    Folsom, CA
    #3
    It likely will not work however you can try it though. You will need a Mini Display Port to Mini Display Port (same physical size as a Thunderbolt) and then attempt to use the thing in Target Display Mode. DO NOT get a Thunderbolt cable, the iMac's from 2009 did not have Thunderbolt.

    Good luck.
     
  4. Declanimation thread starter macrumors newbie

    Declanimation

    Joined:
    Jul 24, 2015
    Location:
    Brisbane, Australia
    #4
    > "You don't need a thunderbolt cable, Display port (or DVI as it's 2009) cables or adapters are what you need"

    Whoops yep, sorry, should've known that. Cheers!


    > "I don't think it'll work if you cant get the computer to boot up..."

    Yeah, that's my concern :/
     
  5. Declanimation thread starter macrumors newbie

    Declanimation

    Joined:
    Jul 24, 2015
    Location:
    Brisbane, Australia
    #5
    Alright, looks like I might just have to buy the cable and hope for the best. Thanks so much!
     
  6. rkaufmann87 macrumors 68000

    rkaufmann87

    Joined:
    Dec 17, 2009
    Location:
    Folsom, CA
    #6
    They're cheap, contact Monoprice for one. I am assuming the computer boots up of course, if it doesn't do that then you're wasting your time with it.
     
  7. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
  8. Significant1 macrumors 6502

    Joined:
    Dec 20, 2014
    #8
    With broken gpu i could boot my 2009 iMac up in safe mode (shift down during startup) and use tdm.
     

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