@erik_squires Oh, I did not take it that way at all!🙏🏻 I think I was trying to address the very real issue of shielded vs. unshielded. I’m not sure which of the cables are which, but it will be very easy to get that information. I’m afraid my Brick Wall is loaded with wall warts, but there has been no recent addition, unless one is beginning to fail (which is possible). I’ll end up systematically unplugging each one and seeing if that has an effect.
I don’t want to jinx it, but since I got up on this quiet Sunday morning, the system is absolutely silent. I’m thinking you guys may have scared away the gremlin!! He knew I called in the big guns!