Mensagem original de: Nate ,
It could always be the logic board. I've had to replace mine twice (once every two years). First time covered by apple care. 2nd time $330 at Apple store. It's a known issue with the last silver keyboard MBP model. There's a class action lawsuit as it appears apple put these machines out with a known issue with that particular logic board and most owners of that machine have experienced the issue.