I have a late 2009 Macbook that my father in law dropped and ice cube on and did not realize it until the next day. Now the computer will not start-up. My question is, is there a common component on the logic board that shorts when this happens? I see that most all Macbook problems stem from liquid damage and all seem to just replace the whole logic board to fix them which cost a lot of money. It would make more sense to just replace the one or two damaged surface mount parts that probably shorted. I do understand that if the bad part is an intimidated circuit or programmable ROM that it may be best to just replace the whole board. I can't seem to see any visible damage to the board which makes the problem harder to solve, and I don't know how to trouble shoot the board. Thanks for any help. Feel free to tell me to stop being cheap and buy the whole board if you like.