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In my youth, I aquired so many old 1930's-40's radios... from family and friends cleaning out their basements... Had no idea that old capacitors went bad. Ran the radios until something either spewed or burned. Ripped them apart, and went to the next one. Sickening today, just thinking about it.
After 30 years of solid-state repair work, I dont trust anything old, especially capacitors.
Bringing them up slowly means on a variac, not full power for a moment then turn off for awhile, then back on for a moment.
I'm restoring a DuMont TV built in 1950. My avatar pic. It's got all new electrolytic capacitors already, and the wax capacitors are coming soon.
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