Not booting after liquid damage.

My sister had an accident and got some liquid spilled over her brand new MacBook Pro unibody keyboard. The computer was on at the time and immediately shut down. She gets frantic flips the computer upside to get the liquid away from the computer. She leaves the computer off and tries to find a way to remove the battery - to her surprise, it's a triwing and almost impossible to remove.

2 days later she turns the computer on. It boots normally up to the login screen, she goes crazy again nervous as to what to do and shuts the computer down. She gives me the computer to look at a few days later and the computer no longer turns on. Nothing zip, zilch, nada. I open the computer and found no signs of water damage on any pcb component whatsoever.

My question is, (being somewhat new to the mac experience but well versed on pc's) is there a way to turn on the computer without using the power button? On pc's there usually are a set of jumpers or pins that you can short out to to turn on the board. Where would something like this be located, because my main hunch is that the logic board is still good, but the power button circuitry - if there is one - got friend leading to a cheaper fix than a new logic board. Any suggestions would be great.