Excellent guide on replacing capacitors in old radios “Second only to power cords, capacitors are the most failure-prone components in old radios. In a professional overhaul, it is common to replace all of a radio’s large electrolytic capacitors and small paper capacitors. This article explains how to do just that. In many cases, this “recapping” is all that the radio needs to be restored to health.” Link.
HOW TO – Replacing Capacitors in Old Radios