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Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

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Where can I buy a replacement graphics card?

I took apart my iMac and only diagnostics LEDs 1 & 2 are solid green. 3 & 4 are off, so I'm assuming it's related to the graphics card, from what I read on this website. Where can I buy a replacement graphics card or is there anything else I can try before purchasing a new one? I have a high level of tech experience so working on it myself is not an issue. I just don't have many "Apple" years ; )

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Here's the Graphics card part info and one possible source: ATI Radeon HD 2600 Pro, 256 MB - Apple P/N 661-4426

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Thank you so much!

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Amazon had a few check out the list https://www.amazon.com/gp/search/ref=as_... graphics card&index=aps&camp=1789&creative=9325&linkCode=xm2&linkId=7180c7669f271ced1eda9a6481326f5a

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Thank you for the help!

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Jay Hernandez crwdns2934231:0crwdne2934231:0
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