JVC HR-S8000U Won't Rewind

[olePigeon]

Oops. Yes, to answer some questions:

Yes, I got down to the mode switch and cleaned it. I also checked the belt. To be honest, it looks like someone was in here already. The switch looked like it had already been cleaned. I cleaned it anyway following 12voltvid's recommendations. The belt looked like it was recently replaced (albeit a bit greasy.) I cleaned both the belt and the pulleys. The retaining clip for the worm screw was broken, indicating someone had taken it out and replaced the belt already. The belt didn't seem to be dried out or goopy.

I took care to follow the service manual for aligning the mode switch V groove. The service manual says to push the plate assembly to the right and line up the holes on the plate assembly with the holes on the chassis, then insert a screw driver to keep the holes aligned. Then align the V groove on the mode switch.

Edit: Also, I'm in Northern California (South Bay Area). So if any enthusiasts are curious and want to see it in person. I could also stream it on Twitch, I have a web camera. I don't know if seeing it in real time would help.