[HAM] B3 Swell Capacitor

[Pete Mazich]

jordan wrote:
>>   You can tell by the sound it is a mechanical problem.  It sounds 
>> similar to a microphonic on a tube, however it is definatly in the swell box.
>>     
>
> try switching out the 12bh7 and/or 12Ax7 for known good ones (i.e. non-microphonic). Check the shielded wire that connects the swell pedal (green wire) for a good connection. Also, <inside> the swell cap housing there are four screws that hold down the assembly- make sure these screws are screwed tight to the preamp chassis. 
>   

pete