[Boatanchors] BC-342 front panel removal

[mac]

AGC lines in the BC-342/312 and other radios of the period tend to be  
high impedance circuits and as such would be particularly affected by  
leakage in the decoupling caps.  You are correct, though, no smoke if  
they do go bad.  :^)

Dennis D.  W7QHO
Glendale, CA

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On Jul 3, 2013, at 10:07 AM, Ian Wilson wrote:

> Looking at the schematic, the buried micamolds in the RF/1st Det  
> cans are
> decoupling for the AGC line. The resistance between the AGC line and  
> ground
> measures OK, so I am tempted to leave these caps in place - the  
> worst that can
> happen if they leak is to spoil AGC action.
>
> 73, ian K3IMW
>
>
>
> On Mon, Jul 1, 2013 at 12:34 PM, mac <w7qho at aol.com> wrote:
> Yes, you would have to remove the tapered pin on the vernier control  
> shaft to dismount the front panel.  No easy way to do this that I  
> know of.  I've re-capped several of these things and while the cap  
> behind the front panel is hard to reach removal of the panel not  
> necessary to replace.  Also not necessary to disassemble the RF coil  
> enclosures, merely worry off one of the leads on each of the buried  
> caps with a long skinny hemostat and then solder the replacement  
> component in an electrical equivalent but accessible location.  Did  
> find it necessary to dismount the xtal filter can to replace the  
> black plastic cap inside that one, though.
>
> Have also gotten away with NOT replacing the oil-filled units in the  
> metal cans except in an old (1938) "A" set .
>
> Dennis D.  W7QHO
> Glendale, CA
>
> *********************
>