Any chance that I can find out what exactly worked for you? I have the same problem. A1342 model, liquid spilt. At first half the keys weren't working then shortly after the computer wouldn't start. Still charged fine with the orange/green lights coming on on the charger. I have completely dismantled the computer and the only damage I see is a little corrosion at the right speaker connector and sleep LED connector on the logic board. Everything else looks fine. I would greatly appreciate any advice regarding which steps should be taken next. New logic board? or simply a clean? new upper case? how to clean? possible to test hat's working without putting everything back together? Thanks for any help and info!