Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

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RE: Odd hum issue - suggestions ??

Posted by Triode_Kingdom on May 31, 2017 at 09:10:33:
"The neutral to ground lug on the chassis was also enamelled, so cleaned that off. No improvement in the hum. I then ran a jumper wire between the the neutral bus of a large capacitor pair directly to the ground lug - hum gone."

I strongly suggest that you use a multimeter or other tester (or call an electrician) to be sure the Neutral and Ground wire at your AC outlet are correctly wired.