A client of mine spilled a Diet Coke on her unibody white MacBook. I got the machine weeks after the event and after Apple told her it'd be $750 to repair. The machine would not power up or show any signs of life. I took it apart thinking I'd find gunk on the parts and start by cleaning it up. So, I completely disassembled it only to find nothing gross inside. In fact I found no evidence of a spill. I did not take the top case apart - the keyboard and trackpad are still attached. So it appears that the spill was probably contained within the top case and didn't leak down onto the logic board. I'm thinking about replacing the top case as I'm pretty sure that's screwed up. But, short of ordering one, reassembling everything and trying to see if that fixes it, is there some way to further troubleshoot?