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RE: 60 Hz Hum - Update

I am disappointed to report that unplugging the LED lamps from the circuit (shared with the Universal Player) did not cure the hum problem.

It must be a more serious and/or fundamental issue.

I am electrically challenged but if I were guessing, I would say that the problem may lie with a long interconnect defeating the filtering applied to the switch-mode power supply inside the player itself (allowing distortion to leak through) or that I have a ground loop issue that only affects components with switch-mode power supplies.


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