Univox EC80A with re-felted cassette.
I've worked on four of these this year and the only problem they've had has been the tape. Or I should say, the cassette.
But all they've needed is some new felt so that the tape touches the tape heads with the right amount of pressure. So if you have one of these that doesn't work that still has the cassette, you're most likely gonna be able to just put some new felt or foam in there and have it back to sounding good again.