HDMI on the other hand is a disaster and who ever designed the plug needs a dope-slap.
Thanks for posting the article. I’m lucky to not have line noise problems right now, but I have had them in the past, tried everything to no avail, and now have some understanding of why I failed to fix it.
I’m using a computer with HDMI output going into a cheap Denon receiver. I’m not having any issues with power noise coming through the system. This may be the quietest setup I've ever had. Usually I can hear a little buzz if I put my ear right up to the speaker, but now it’s dead silent, other than the amplifier’s own hiss if I turn it up. However, I switched out to a different used receiver to test out and am now getting what sounds like CB radio coming through once in a while. What’s really strange is that it came through the right rear speaker, so I figured it was a problem with that amp channel. Last night it came through the left rear speaker. Scared the crap out of me. I thought my system had become demon possessed. The voices are distorted and weird sounding. I can’t make out what they’re saying.