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Life span of selenium rectifiers?

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08-03-2009, 12:08 PM

Jeffhs

<----Zenith C845

Join Date: Feb 2003

Location: Fairport Harbor, Ohio (near Lake Erie)

Posts: 4,035

Life span of selenium rectifiers?

I have two Zenith radios (K731, C845) with selenium rectifier stacks in the power supply. How long are these rectifiers supposed to last before they fail? My sets were made in the '60s and are still working. Oddly, however, my MJ1035, which was also manufactured in the mid-sixties, has a silicon diode as a low-voltage rectifier. When did Zenith make the switch from seleniums to silicons? Hmmm.

Thanks in advance.

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Jeff, WB8NHV

Collecting, restoring and enjoying vintage Zenith radios since 2002

Zenith. Gone, but not forgotten.

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