Casouza- Yes it was a false negative.
I will first try powering all the components from the same outlet.
Then I will try the shorting plugs.
I do have cordless phones in my office and will also try first w the phones shut off (but if so, would be a major hassle).
I have a ground iso xformer on my TV, but not on the cable internet that is hooked up to my other computer (not the music server).
Shadorne- I don't have any technical skills, but my thought was that since the whine kicks in after about 30-60 sec and ramps up in pitch and level, then stops instantly when the woofer is shuts down (about 5 sec after hitting the switch, w a significant thump, that it might be a component failing in the woofer amp.
I will first try powering all the components from the same outlet.
Then I will try the shorting plugs.
I do have cordless phones in my office and will also try first w the phones shut off (but if so, would be a major hassle).
I have a ground iso xformer on my TV, but not on the cable internet that is hooked up to my other computer (not the music server).
Shadorne- I don't have any technical skills, but my thought was that since the whine kicks in after about 30-60 sec and ramps up in pitch and level, then stops instantly when the woofer is shuts down (about 5 sec after hitting the switch, w a significant thump, that it might be a component failing in the woofer amp.