If you ask the question for old mechanical stuff that usually means something else entirely, I would think
https://www.youtube.com/channel/UCyjwQ6oz4cqqtEcWGboSU3g when people said old mechanical stuff.
As far as old school AV (audio-video) gear then there is some more. VHS tapes enjoy a measure of popularity in China, a few other parts of Asia, and among certain sets of film fans (often horror and b movie fare). To that end you can probably find some people that will fix them, however I don't know that I have seen anything approaching that of old audio amps (as in hifi stack, something you plug a guitar into can probably be sorted by them but enjoys a different fandom), equalisers, record players and such. Old radios (think...