I have a Sharp camcorder, but the answer from Raul Smith solved my "can't insert cassette" problem. I left the cassette compartment open. Turned the camera off, removed the battery according to the instructions in my manual. I left it out for less than a minute and reinserted the battery. As soon as I inserted the power cord and turned on the power the cassette compartment accepted the cartridge and I am in business again.
Marjorie, July 2009