Xbox 360 slim closes by its own.?

So some days ago water fell on my xbox 360 slim (very little amounts) and now when i try to open it, it opens and starts as usuall and is able to play games but after some time i just shuts down by its own.After it shuts down the turn on button (the circular one) wont do enything when i press it but if i press the open disk tray button it does the beep sound but nothing happens except sometimes when i spam it it opens but it closes after a little same as above.Also if i put it off power and then plug it in again i can use the turn on button but the same thing as above just happens again.Any ideas?