Digital video camcorder are recording signals in very thin line (as thin as 1/8 of a hair.) Therefore, following symptoms may appear if video heads become dirty even a little.
If such symptoms appear, clean the video heads with a commercially available dry cleaning cassette.
If the symptoms reappear shortly after cleaning, the video cassette may be defective. Stop using the cassette.
Video heads may become dirty under the following conditions:
(1) When using the camcorder in humid or hot places.
(2) When using cassette with damaged or dirty tape.
(3) When using the camcorder in dusty places.
(4) When using the video heads without cleaning them for a long time.
Before you make important recording, clean the video heads and make a test recording first.
We also recommend cleaning the video heads after use before storing the camcorder.
I have same problem - a tape that is recorded shows like it is blank, but sometimes if I record for a second it all comes back - except now i've recorded a little over the beginning. It's like the camers forgets something or can't seem to read the tape, or can't decide what format is on the tape , and just recording for a second seems to reset something.
After that it's fine for a while until the next time.