Did you clean out all the residue after the spill? I don't mean just cleaning the outside, but opening it up and cleaning it with say rubbing alcohol or other computer cleaning liquid? That spill would leave lots of residue and that would lead to all kinds of issues, including over heating and possibly frying one or more components. Never a good thing.
If you haven't done that already, I would do so. Just make sure the power is off, it is not plugged in and the battery is removed.