09-08-2017, 09:52 PM
If there is exposed chassis, I change to a polarized cord and run the hot wire to the switch and then back to the rectifier tube. I run this loop side by side and twist the wires together to minimize magnetic radiation. I try to run them around the corners of the chassis away from any audio tubes. I have never had a hum issue this way. Any line bypass caps get Y2 safety caps.
Rob
Rob