[maxhifi]

Thank you for all of the advice! Since the picture tube is what it is, I decided I may as well just make this TV as good as it can be. The picture is not ideal but it's more than acceptable for my needs, and as you say, learning is good. I just put in an order for a full complement of Panasonic film capacitors, at digi-key, to replace all the white ones (if I am going to replace three of them, it's not a lot more effort to change them all), and some new electrolytic capacitors to replace the can. In the mean while I will test all the tubes, and see what I can do about replacing the weak ones.

I don't really expect new capacitors to make the TV perfect, but they sure won't make it worse and then I can begin troubleshooting without knowing there's probably a bunch of bad parts in there. I don't own a capacitor tester so that's not really an option.

Tom: I already cleaned all the controls and the tuner, that's more or less the first thing I do with old electronics.