I've been working on this JVC camcorder for a while now. The owner told me it's been dropped a few times and it finally wouldn't eject a tape. An ERROR 02 would come up on the screen saying REMOVE BATTERY etc,etc,. I found many links to this being a common problem. Some say tapping on the camera has fixed it. They took the camera to a regular repair shop, who was able to get the tape out. For whatever reason, it wasn't fixed.

  When I played with it, I noticed the transport motor wasn't even trying to move. I traced the motor circuit back to a BA6866KV chip.

I changed this chip, $68+ from a VCR shop, and the motor now works. For comparison of size, that's a dime. I had to sharpen the iron for this! I pulled up one trace on the right side of the chip, and repaired that with a strand of stranded wire. It took about an hour to change! There are 80 pins on this sucker.

  After the chip change, I put a 10 ohm resistor in series with the motor, in case binding blew the chip. I aligned it and put it back together. At this time it ejected with no problem. I didn't have a VHS-C tape, so I bought it back to the owner to test. She put a tape in, it loaded and bound-up again. It wouldn't even eject, just like before. I took it apart again, but this time the motor was still trying. I helped it along with an external power supply, and it worked again. I could see and hear tight spots. The mechanics would snap when the force overcame the tight spots.

This is the one gear I found with two teeth badly rounded off and bent. Shown is after I 'fixed' it with a hot poker.

I went deep into pulling parts off and found this metal thing that acts as a lift apparently, when the tape guides come back around the head. Maybe it's just a guard for the gear under it. The bottom of the tape-guide/puller has a brass piece that mates with a channel at the end of it's travel around the head. This was catching this metal thing on it's edge, as if it weren't aligned correctly. Maybe the channel is just worn badly. On the unloading of the tape, this was the cause of the bind. I bent this metal piece downward and that part of the mechanism worked smoothly. The gear was going through it's 'fixed' teeth pretty easily but there was still a tight spot on the end of the load. I was concerned this would strip the teeth again. I found the cause to be a very tight spring that holds the rubber roller to the capstan.

I jammed a small screwdriver between each turn of the spring to stretch it a bit. Now I can move the transport mechanics through their ranges with no tight spots or bindings. I found other broken plastic parts, too. I think these can be super-glued. I'll let you know how things work in the end.
BTW: This camera is nothing special. It isn't even worth the over-priced chip, IMNSHO. I seen a new JVC VHS-C camera in BJ's for $149 with some analog zoom with a total 1000X zoom and steady-shot.

I hope this helps someone who might have one of these with problems but nothing blown and a steady hand and good eyes, or a Stereo Microscope. (I had two cornea transplants)

Take Care!
HarryHydro