We have a 1.5 year-old JVC GR-D30u that suddenly stopped recording the picture - only sound. We tried all different settings and nothing would work. We tried different tapes as well. Playback works fine, but when we try to record, the picture looks completely out of focus (you can't distinguish any shapes) but it records all the sound. After many attempts at different settings, etc, we put it away and then got it out a week or so later, and suddenly it was working fine again. Then a few minutes into taping the visual went out again and now we can't get it to work. Any suggestions?