[Boatanchors] Repairing a tuning capacitor

[Pete Lancashire]

I wonder how well a conductive epoxy would work ? other idea a pin or
wedge. think watch sizes. the idea is staking



On Tue, Aug 30, 2011 at 3:50 AM, David Stinson <arc5 at ix.netcom.com> wrote:
> Another thing I'm seeing in some of my old rigs:
> The caps are often assembled as a "stack" of  plates
> and spacers and contacts which are mechanically
> pressed together.  Over time, oxidation has built-up
> between some of the parts.  Last time, I had a
> 3-section receiver cap in which the solder connection
> strip, pressed on the end of the oscillator stator
> support members, no longer made reliable connection
> with the stator. I used a good, hot iron to fix that one.
> Also seen this several times on the stators
> of ARC-5 transmitters; the points where the
> solder contact strip of metal is pressed onto the
> end of the stator go intermit.  Solder fixes those
> as well but you have to be careful not to
> dislodge those little plastic beads that hold the
> stator in place.
>
> On another, the rotor plate "stack"
> (plate-spacer-plate-spacer etc.) had become Hi-Z
> between some of the plates and spacers.  I used
> a soft copper wire with a light bulb and battery
> to make a crude "spot welder" and tacked across
> the offending pieces until it fixed the problem.
> Other times I've tried this "spot welder" it didn't
> work as well.  Guess it has to do with the metals
> involved.  I'm no welder but I bet someone reading
> this is.  Any insight on how to do this better for next time?
>
> 73 DE Dave AB5S
>
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