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Re: Do I have bad pot, no I don't think so

63.23.118.247

Posted by trippyloaf on November 1, 2001 at 14:35:46

In Reply to: Re: Do I have bad pot? posted by Grid_Leak on October 31, 2001 at 18:12:56:

Hi all,
I replaced the pot with a similar one and the exact same thing happens. So i figure it probably isn't the pot. I moved the ground to a spot near the rca inpit jack, that didn't help. Note: Joseph doesn't use a star ground nor bus ground scheme. He uses a local one - power supply, input/driver, and output.
I put in some snubber caps in the filament. see: http://www.audioasylum.com/forums/set/messages/9975.html
and that didn't help.
I don't have my 6.3V CT grounded nor do I have my 5.0V CT grounded neither. Could that be a problem? I also have my 5V heater wire run near the volume pot (about 1/2 inch).
It is definitely a buzzing sound and not a hum.

Worse case scenario, could I measure where the audio pot has the least amount of buzz, take that value and place a grid input resistor of the same value into the circuit and use a preamp?

thanks for any suggestions.

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