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Some older radios ran hot so that finished their caps off rapidly. I still use a Citation "A" germanium preamp (1962) with Heath W6M amplifiers(1958) in my audio system. The "A" has never had any parts replaced, the heaths have had capacitor failures but still have a number of original parts.
I think wax capacitors were probably a nightmare from the start, not to mention the famous "bumblebees!
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