- Try below or here for Camera Repair What model is it? When/how/first noticed did it happen? Any signs of warning? What size and type batteries are recommended? Most digital cameras work best and longest on Lithium Ion type. Some cameras have more than 1 type/shape battery in a different place from the main ones. Heavy duty batteries are problematic. The lens usually sticks open or closed... What else is not working, or working? Assuming no damage-dropped, wet, dirt/sand: Turn camera off, remove battery, and any media cards for a minute or so. Clean any corrosion/rust or other material off battery terminals using pencil eraser. Reinstall known good batteries after waiting for the camera to clear its head. Don't reinstall card(s). YOu may be prompted to tell camera to use internal memory. Say yes to a question like this. Check operation. If it works ok, then reinstall same cards, one at a time, then check after each change. good luck!