Hi there Kenneth.
Thanks for posting on this forum. According to a few of our community members, it looks like a GPU replacement isn’t really possible without replacing the entire logic board. You can find more information on this topic under [https://www.ifixit.com/Answers/View/485458/Is+it+worth+repairing+the+graphics+card-logic+board|this thread]. iFixit is a collaborative wiki free for anyone to use, so if you’re able to create a guide then please feel free to do so.
Let us know if there’s anything we can do to help.
Happy fixing!
Justin Ogihara
