[R-390] R392

[Bob kb8tq]

Hi

I’d put “60 year old unsoldered connection” on the list along with “cracked resistor”.
Both are a poke around a bit and listen to what happens sort of thing. 

Bob


> On Jun 19, 2017, at 12:12 AM, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> 
> Guido wrote:
> 
>> There is some popping before it come back
>> so I suspect a bad cap in the audio section.
> 
> If the volume control has no effect, the problem would appear to be in the audio section (V606, V607, V608 and associated circuitry).
> 
> Bad cap is certainly one possibility, but don't forget the most common source of such problems, namely noisy contact between tube pins and their sockets.  To check, just put your finger on top of each tube (one at a time) and wiggle it a little.
> 
> Best regards,
> 
> Charles
> 
> 
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