[Guest]

HI, DONT HIT YOUR CAMERA! I KNOW WHAT CAUSES THIS PROBLEM AND ITS EASY TO SORT OUT.
THE C31 ERROR CODES AND ALSO CASSETTE DOOR NOT OPENING PROPERLY IS USUALLY CAUSED BY A VERY FINE RESIDUE BUILDUP ON THE BATTERY TERMINALS AND THE ONES ON THE CAMERA AND ALSO THE MAINS SOCKET. THIS IS CAUSED BY DAMP,HUMID OR WET CONDITIONS. YOU NEED TO TAKE A VERY SMALL METAL OBJECT LIKE A NAIL FILE ETC AND SCRAPE ALL TERMINALS CLEAN AND THAT SHOULD DO THE TRICK. IT WORKED ON MY SONY CCD-TR515E CAMCORDER. KEITH