That's really bad luck. 2 for 2 bad from eBay. I've had mixed luck as most do. I bought a Canon miniDV that worked great for a couple hours and then "the smoke escaped" as it went belly up quite spectacularly. I have no idea what happened but I disassembled it to find a darkened, smelly little circuit board. There are a number of discussions about eBay problems and some notorious sellers on this forum. Ideally you want a to find a unit you can test drive before you buy. That's hard and especially hard to do these days.
If you haven't seen it there is a list of recommended
8mm playback devices here:
I think the lists are mostly correct though it appears the CCD-TRV67 is actually mono, not stereo.
Many of the manuals are still available from Sony so you can look them over to know what you are supposed to be getting... Search for the "model# manual" and Google should direct you the manual download page if it's there. Your 460 manual is available but doesn't specify the exact remote once included.
I think the correct remote is the RMT-831 or possibly the RMT-835. Lots of these are available on eBay for about $10, but I don't know that this would do everything you will need. My guess is that you'll need access to the menu structure via the touch screen to turn on/off the TBS, etc. Maybe a through reading of the manual might help to understand if it's possible.
Otherwise, some eBay searches for items on the lists.
Hi8 Stereo w/TBC
Hi8 Mono w/TBC
Digital 8 that play analog w/TBC (all stereo??)
(Deleting some of the items in the last parens might get a you few more hits.)
Picking the device and right seller on eBay is a trick. We each probably have our own "method" of winnowing down the options within our budget. For the highest confidence, I tend to look for "complete packages" even including the original packaging. Then I look really close at the pictures and descriptions for obvious signs of abuse. Finally I look at the sellers rating and equally at what else they are typically selling and what they have for sale at this time. For my 8mm stuff I ended up buying a D8 "package" for about $160. It works as well as I hoped - so far... But of course, there are no real guarantees. YMMV. Maybe some other forum experts will add their recommendations on how to improve your chances of success in the eBay sweepstakes!
If I were to do it over I would probably have gotten a Hi8 stereo unit because occasionally the D8 units
have trouble recognizing the tape format and changing to match. I also looked for a top loading model just to make tape handling easier (I hope).
I can't help much about the VC500 issues since I've not used one. Windows 10 can fight you in part because it won't load some drivers and then sometimes it won't let you change drivers once you have gotten some to load. It can probably be done but Win 7 is less of a problem. Again, maybe some of the forum stalwarts that use the VC500's will add their thoughts.
To search the forum, e.g. for VC500 posts, try using the "Google search box" at the top of the search options. It is much more effective than the "Advanced search".
BW