[ARC5] Powering an ARC-5 Receiver After Long Storage
Bill Cromwell
wrcromwell at gmail.com
Wed May 21 11:00:33 EDT 2014
On 05/21/2014 10:48 AM, Kenneth G. Gordon wrote:
> 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
> ______________________________________________________________
>
Hi,
Some of the resistors get pretty far afield from where they should be
too but all of them I have found went very high - reducing current and
not increasing it.
73,
Bill KU8H
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