Restoration Commences on 1947 RCA Victor 721TCS

[Electronic M]

Originally Posted by Penthode

That is why they are called "Dry Electrolytics"!!! Lol.

Wrong. They're called dry Electrolytics as they are not a can of electrolyte fluid with a thin positive electrode in the center like the set Electrolytics used in 30s early 30s Philco cathedral radios.

If you tear open a good dry Electrolytic of any vintage at the very least there should be some electrolyte moisture on the foil/dielectric roll. If there isn't it's dead or about to be.