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Original Message
RE: Odd hum issue - suggestions ??
Posted by Chip647 on May 30, 2017 at 18:54:59:
Obviously it is a grounding issue related to the "upgrade". The chassis either has a bad ground to signal ground or too many grounds. Try taking a wire and touching it to the chassis and the other end to another component. What you may find is that the RCA grounds have been messed with.
The dude who designed the component was pretty bright, probably a lot brighter that Mr. Greenstreet, or whatever.