technobeam color wheel problem

I have a technobeam tha
t just yesterday the color wheel stopped working. It jerks a little like it's trying to move but won't spin. There is a fair amount of resistance when trying to move it by hand, not sure if that's normal. No unusual output on the lcd. Any ideas?

Also I have another one that blew its main fuse, after I replaced it, the unit works fine except shows spinning letters/symbols on the led 24 hours a day, whether on, in use or idle mode.

Thanks!