Aside from the possibility of the switch being defective, the main issue with trying to use any of the KODAK Super 8mm series camera is that the KODAK used a neoprene drive gear on the motor shaft. This gear crumbles or has crumbled to pieces when old and ALL of these camera are now old. Sadly many of their XL cameras would be nice to use, but virtually all would need this gear replaced; and no replacements are available. The only KODAK Super 8mm cameras that didn't have this cheapo gear are the very first two models, the M2 and M4. So, even if the camera seems to run, it will unlikely ever transport an entire cartridge of film. My recommendation is to just get another decently made Super 8mm, of which there is a plethora of cameras to pick from out there. Get a well made camera that has manual exposure mode on it. The CHINON made for GAF cameras are usually good low cost options; select one from the ST series with ST-100 or higher. Even if the light meter doesn't work, the manual mode will allow you to adjust the lens aperture, with a scale in the viewfinder. Good luck and enjoy shooting in Super 8mm!