[ARC5] Reforming capacitors????

[J. Forster]

Correct, with the following proviso. There is little question about reforming
electrlytics. In the case of paper and other caps, failure can be due to moisture
ingress causing leakage. Applying voltage gradually can remove the moisture slowly
enough that there will be no catastrophic failures which could damage the caps or
assciated circuitry. That's why I apply the HV over a period of days. For example,
with a 250 Volt supply, I increase the voltage by 25 volts about twice per day,
unless there are indications this is too fast.

-John

Kenneth G. Gordon wrote:

> > > Have you thought about removing the dynamotor brushes and adding a jumper?
> >
> > IMO, the capacitors will work just fine if you re-form them carefully before
> > powering the unit.
> >
> > -John
>
> Correct me if I am wrong, but I thought one could only reform
> ELECTROLYTIC capacitors. Only two of the caps in the ARC-5
> receivers are electrolytic: most of the rest are paper, with a few odd
> mica here and there.  I was not aware one could reform paper or
> mica caps.
>
> Ken Gordon W7EKB