I had a similar problem last year with dropping my t-9 in water. Read about what happened and how tmagic650 helped me fix it at link below. By the way, a few months ago, the down button started functioning again. (This will make more sense once you go to the link.)
LINK: http://www.techspot.com/vb/all/windows/t-80279-dropped-ypt9-in-water.html
tasha27, August 2008