"someone" drop a cup of coffee on my macbook 11",
laptop was still on, but doing some crazy staff....
went to the apple store for a check up, didn't say what just happened...than a call few days later: "there is coffee all over the place, and the logic board has rust - it will 750$ to fix..."
got the drivers - opened the cover , so the coffee all over the place...clean it - done.
saw the rust....used a tiny brush , and alcohol - rust off - very easy, closed - trun on - walla - as sweet as ever.
when apple say something - don't run to their hands to fix it...maybe you can do this with www.ifixit.com