I can get the logic board board out of my 17" unibody MacBook Pro, but I don't have a way to test the AMD GPU. My best guess is that the solder BGA is defective.
Suggestions about a good repair place to send the board to. I know that if the GPU is also defective, I can, at best, expect a used AMD GPU. That's OK. I also know that the cost is going to be high.
What I need to know is who has had good results, and with what repair places.
I may also buy a "warranted" replacement logic board to have on hand.
Thanks for any replies.