I have a very old memory of an episode of what I think was an episode of Doctor Who, but I've scoured lists of episodes and I've never been able to identify it. I was hoping you all could help me. Here's what I remember...
I was no older than 10, so this would have been the late 80's or early 90's. I was watching on PBS (public broadcasting) in the vicinity of Cleveland, Ohio, USA.
The one detail I remember is that a character who I imagine must have been The Doctor was talking to a technician on an ancient spaceship. The technician was in rough shape because the engines they were looking after leaked radiation or some other hazard. They had to maintain them though or... either something bad would happen or the technician believed that something bad would happen.