Sony TRV-280 videocamera. Error code 31:22. Tones. Won't record, rewind or play. Tapes of trip to Rome worthless unless I buy a new camera. I felt sad. Months passed. I'd try it from time to time. Same result. Then I found this site and I had to laugh. I mean, how many times does something like a swat work on anything? Battery removed, check. Three spanks on the tape side, check. Replace battery. Yeah,Daddy!!! It worked and I'm really pleased. Man, this made my day. Thanks.