Variable caps

[Chris Campbell]

Mike:

You might try a tiny bit of contact cleaner where the rotor part of the
variable cap contacts the frame.  There's usually a bronze spring there
for the contact.  Also try air to blow the dust out.  Some times just
working the capacitor open and closed cleans up the contact.  This
"conductive grease" refers, as somebody else noted, to thermally
conductive grease for mounting solid state devices against a heat sink.
 It's not electrically conductive.  Got some Deoxit?

Chris Campbell

Mike Penzo wrote:

>I just restored an old Silvertone AM tube radio this weekend.  It now
>works fine except there is quite a bit of static and popping when the
>main tuning (air variable) cap is rotated.  The cap is quite dusty and
>dirty.  Would some electrically conductive grease help in this case also?
>Thanks and 73,
>Mike
>
>On Sun, 23 Feb 2003 17:52:09 -0600 Fred Olsen <fwolsen at EXECPC.COM>
>writes:
>
>>The Heathkit Junkie wrote:
>>
>>>Go to your local computer store. They have conductive grease in a
>>>
>>tube,
>>
>>>etc.
>>>
>>He wants ELECTRICALLY conductive, you're talking about THERMALLY
>>conductive.  Not the same, and sorry, I don't know where to find the
>>former.
>>
>>Fred
>>-----
>><><
>>-----
>>Outgoing checked by Norton AV
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