Television and Home Theater

Half a bottle of champagne was recently dumped down the back of my TV at a party.  It works, but when I tried to play a movie the other day, I found out that none of the A/V channels/inputs are working. 

I THINK that the inputs are fine.  The side inputs could not have gotten wet (the back most definitely did). 

When ever I press the A/V button on the remote, the LED on the front of the TV blinks, but wont change over to A/V1, A/V2, exc. 

Did I fry something in it?  Is there some way to reset the TV?

I have a RCA HDTV the power comes on, then goes off, then it comes back on, and then off again. What part do I need to try to fix this. Model # D52W19B. Sometimes I can hit the power button and the TV will work fine but most of the time it seems to do this cycle on/off thing and then will not stay on.  

I got a centurion 7 inch screen which wont power up, when i put the 12 volt supply to it i see a brief flick of the screen and thats it ,what is the compoment that fails capacitor? i am now pulling my hair out