Rodney Bunt <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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If you have a variac (Variable AC transformer) power up the PS, 10 volts at a
time, over at least
a 24 hour period.
An alternative is to disconnect the electros (and assuming they are in good
condition in the first
instance) using a capacitance tester, which is a high voltage power supply with
a magic eye tube
monitoring the leakage current. Look at the Magic eye tube and when there is no
leakage the edges
of the bright band are very well defined, when leakage is occuring the edges
get less defined and
positivly blurry.
Wind up the voltage untill the edges become slightly blurry, after a period of
time the edges will
become sharp, then wind up the voltage some more, untill the edge is blurred
again, wait some more
untill sharp, etc. etc. etc. In this way I have "reformed" some electrolityic
capacitors from the
1940's in a Hammarlund rig. THey are operating fine NOW.
Here is a picure of the tester I use. http://www.qsl.net/la5ki/big/hc1.jpg
Rodney
VK2KTZ
--- "Bollini, Maurizio" <[EMAIL PROTECTED]> wrote:
>
> "Bollini, Maurizio" <[EMAIL PROTECTED]> made an utterance to the drakelist
> gang
> --
> Good morning again,
>
> I have an AC-3 in these conditions: brand new, never powered up last 40
> years.
>
> What do you suggest to do before beginning the fireup procedure ?
> Do you suggest some components replacing? Which ones?
>
> Then, how to do a proper fireup?
>
> Thanks to share your experiences.
>
> 73 Maurizio, IZ2CED.
>
>
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