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Pas volume attenuators hum

The Pas is a recent purchase and was never run prior to the power supply replacement. Also replaced were the RCA board and power indicator lamp all frm tubes4hifi. The hum is in both channels. The hum reduces when at the mid position of attenuation. I was wondering if there was an issue with the pot itself or possibly the connected filter or resistor. All pots were cleaned prior to any work done. All grounds were reflowed, and solder flows were added around the gound on the line stage pc. I would appreciate your thoughts nd input.

Wayne
Glover


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Topic - Pas volume attenuators hum - wgloverr@yahoo.com 16:36:29 01/17/15 (6)

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