Yes, common problem is a dodgy clutch on the take up side that occasionally stops spewing tape into the works. Its supposed to auto shut off of course, supposed to.. ahem.
I've seen adverts for usb dongles that claim to be able to do this sort of thing, but I have no idea if they are any good. I'd imagine the variable timebase issues due to mechanical tape movement could upset some recording systems. However a person on another group did say that some commercial companies can do wonders with the quality of old videos using some kind of software that sharpens images, makes colour more stable and sorts out the wobble problem to some extent.
Costs a bit though. Brian