Wow, I don't envy you. That's not a task I would want to partake.
There are two forum members here that may have more information for you. Please PM them, and ask for them to reply to this thread. (
Please don't ask for help in PMs -- we encourage open discussion, so that it may help others in your same situation. Post those Q&A in the forum, because it helps build this digital FAQ of a site.)
- Juhok
- deter
Juhok has quite some experiences tinkering with PAL VCRs.
While deter is mostly a NTSC gearhead, he has experience with Panasonic VCRs that should be very comparable (AG-1980P, which is NTSC version of the NV-FS200). He may have some workable insight.
See if either of them could post here in your thread.
My experience with VCR repair and disassembly is contained mostly to JVC gear.