[ARC5] Powering an ARC-5 Receiver After Long Storage

Kenneth G. Gordon kgordon2006 at frontier.com
Wed May 21 10:48:58 EDT 2014


If whomever is doing this hopes to "reform" the bad capacitors, I am sorry to 
have to tell you, that will not work.

First of all, "reforming" only works with electrolytic capacitors. The bad 
capacitors in our favorite receivers are, except for 2 or 3, NOT electrolytics.

Secondly, the reason they fail is that they are filled with beeswax, which is 
very slightly corrosive, and the cans are brass.

After 70 years, the beeswax reacts with the brass to form verdigris, that 
green crap, which, essentially, shorts the capacitors out.

The only solutions are replacement or restuffing.

In my experience, the few electrolytic caps in the receivers are not always 
bad, and when they are, nothing much bad happens.

Ken W7EKB


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