I've had a jvc gr-d70u camcorder for 4 years now and I've never really had any problems with it. I went to use it for the first time in a year this morning, and I discovered there is no sound when I play back my recorded video on the camera. There is sound when I transfer the video to my computer and VCR though. (the volume is turned all the way up on the camera, yet there's nothing) I remember that I had this problem once before, but I fixed it. But I cannot, for the life of me, remember what I did last time! Can anyone help me get my sound back? I appreciate any help anyone can give me.