My Kenwood does the same thing. The display is dim and the buttons don't work at all. I disassembled the whole thing, disconnected everything I could find, cleaned it, blew out dust, checked for loose or missing pieces... nothing. Problem persists. The fuse for the radio in the vehicle was blown, but I replaced it. Problem persists. The fuse in the stereo itself is fine, so I'm at a total loss. And to boot, Kenwood doesn't have the manual on their site for this model. If you have the manual or anything else that will help, please share it with me... nicklessig@yahoo.com
Nick Lessig, July 2006