I will tell you what worked for me once with a different type model. Go to Wal Mart and go back to the cleaning supplies. They have a product (I can't remember what it's called) but it's a small cup of crystals that removes odor and sucks up moisture. I had the same thing going on and the camera had moisture in it. I put the camera in a box, tore the plastic off the top of the crystal odor/moisture remover and let it sit for a week. Came back and the crystal cup was about a 1/4 fill of water and the crystals were gone. Camera worked perfectly after that.

Of course your focus may be busted internally as well, but for $2 the moisture remover thing is worth a shot.