03-21-2021, 09:21 PM
Not sure if this simple trick will help with the hum, Mike, but on my 47-1230 I got rid of the hum by grounding the phono table to the chassis. I just ran a wire from the frame of the phono compartment to the ground terminal on the chassis and it disappeared. And, of course, having not read every post in this thread maybe you already tried this!
Greg V.
West Bend, WI
Member WARCI.org