On Tue, 30 Nov 2004 03:19:03 -0500, starman wrote:

Volker Tonn wrote:

Howard Bingham schrieb:

One question, what are "paper capacitors" & how do they differ from
those found on other radios..? (One of the contacts who aparently
services these old German radios suggested replacing the paper
capacitors before replacing tubes.).


Paper capacitors are made with paper inside as the name implies.
These capacitors tend to dry out and tend to explode sooner or later,
destroying a lot inside the radio. So a replacement with modern parts/
capacitors is highly recommended.

It's been my experience that paper capacitors rarely explode. They just
become leaky to DC current and therefore ineffective for their intended
purpose as an AC signal device. Replacing them can protect other
components such as I.F. transformers which can be hard to find for old
tube radios.

David wrote:

They do explode. They'll fill a large room with little bits of
aluminum foil and wax paper.

I used the word 'rarely' for a reason. I have never had an original
waxed paper capacitor explode in any of my boatanchors during the past
30-years. That doesn't mean it never happens. I usually replace them
because most are leaky, especially the infamous 'black beauties'.


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