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Zenith 723R on the fritz
Ron Ramirez
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Posts: 13,776
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Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

08-24-2012, 09:34 PM
It sounds like your set may be suffering from silver mica disease. What you describe (lots of static on AM) is the classic symptom.

What this means is, the mica capacitors in the AM IF transformers have gone bad, and will require replacement.

This, from what I have read (I've never done this repair), is not easy, but not terribly difficult if you are very careful.
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Ron Ramirez
Ferdinand IN
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Messages In This Thread
Zenith 723R on the fritz - by Paul Philco322 - 08-24-2012, 08:28 PM
RE: Zenith 723R on the fritz - by Ron Ramirez - 08-24-2012, 09:34 PM
RE: Zenith 723R on the fritz - by codefox1 - 08-24-2012, 10:28 PM
RE: Zenith 723R on the fritz - by Paul Philco322 - 08-24-2012, 10:42 PM
RE: Zenith 723R on the fritz - by Arran - 08-25-2012, 12:42 AM
RE: Zenith 723R on the fritz - by Paul Philco322 - 09-06-2012, 08:45 PM



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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)