[Milsurplus] Bc-348 volume control

[John Hutchins]

  John -
I never though about this solution!  I use dry ice.  A good (#2 lead 
pencil) would do the trick?  Hmmmm
-Thanks
Hutch


On 10/12/2010 5:57 PM, John Kidd wrote:
> Hi Bob,
>
> I have had 100% success using a "Scope" soldering iron. This is an
> Australian iron that uses a carbon element to heat
> the copper tip. Powered by a 3 volt transformer at plenty of amps. I
> take the barrel off the iron and put the carbon onto the
> setscrew, provide a return circuit and hold it on for 30-60 seconds
> while the carbon glows.
>
> You could achieve the same by using the carbon rod from an AAA cell,
> which will fit into the setscrew hole.
> Make it long enough just to reach the setscrew and to enable an
> electrical connection. Rig up a high current low voltage source.
>
> This works particularly well on bakelite knobs as the heat does not
> damage them in the time that it takes. The method also
> overcomes screws that have been loctited.
>
> 73's John Kidd VK3FPRC
>
>
> At 11:19 PM 12/10/2010, BOB wrote:
>> I belive the AVC-MVC pot on my BC-348 has gone south. I tried to
>> remove the knob with an allen wrench but the set screw wont budge. I
>> know from experience that I have pushed the wrench to the limit of
>> where either the wrench will twist, the wrench will strip, or more
>> likely the set screw allen socket will strip out. In that event I
>> probably could drill the set screw out from the bottom of the set
>> but I only want to do that as a last resort. Does anyone have any suggestions?
>> 73
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