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Old 6-May-2019, 4:15 PM   #17
rickbb
Senior Member
 
Join Date: Dec 2014
Posts: 313
"Any thoughts on how to eliminate the noise induced into the AC power wiring? I was thinking of a 6 foot shielded AC extension cord to keep the various power supplies physically removed from the TV receiver would help?"...

You could try some ferrite cores on your cables. I use them at work to stop noise from entering USB cables. Even the expensive, well shielded USB cables benefit from having one, (or two), installed on each end of the cable.

You can get them on Amazon cheaply enough to try them. They just snap on the cables/wires, so quite easy to try.
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