I had that same problem with a JVC camcorder of mine. It was about six years old. What happened was one of the pieces to pull the tape tight against the head warped over time and broke. I suggest not repairing your camera. There are tons of new cameras out there that are more modern and up to date than your camera would be and it would be cheaper to get a new camera than to repair your old one. Unless you have a special sentimental tie with it, time to move on
CANON INC. <-- go to their support page, they may have a repair section if you want to go that route.