I think that an important word in my earlier post was missed. I was talking about using CLIPS, insulated alligator clips or the like, to attach the test equipment to the set so that the set doesn't have to be touched during a measurement.
https://www.digikey.com/product-deta...1173-ND/573996
Set unplugged.
Attach clips. Hands off set.
Plug in set.
Note measurement.
Unplug set.
Repeat as necessary.
It is not fast or convenient but it will work.
Anyway the original poster may be satisfied with just replacing the capacitors. Although I would also replace the selenium rectifiers with silicon ones. I'm not sure, but it seems like this is his first venture into working on vintage equipment. It is bad enough to tell someone, that thinks he got a great deal on a TV set, that he will have to buy new parts and test equipment, costing several times what he paid, to get it to work right. I don't want to discourage someone by insisting on another $ 50 or more piece of equipment unless he will be working on more TVs.