I can no longer switch between modes!

I can no longer switch between modes!

This has been a great camera, but I have one problem: the dial no longer works. It will only switch between two modes now, baby and normal. I cannot preview or do anything else with it. Besides this, the camera does anything else fine. I would love to get the dial to give me all of th modes back. Granted, I'm not sure if taking it apart will help. Any ideas?