[Eric T]

I have a capacitive reactance tester on my digital multimeter, but it's of dubious value in testing high voltage electrolytic capacitors as are found in tube radios. It works with a very low DC voltage, so any high voltage leakage won't be detected.

Maybe someone knows of an older type of cap tester that would be better suited. At this point in time though, I'm just going to replace all old caps and any suspected bad newer ones. They aren't terribly expensive.