Originally Posted by cdy2179
If the conditioner didn't work it's probably in your ground... cheaper conditioners only just have filters and don't work that well.. but if you tried a really nice conditioner it takes the hot and neutral and converts it to DC using a rectifier and converts it back to AC using an inverter... this is how the more expensive ones do it... the Cheaper ones aren't real conditioners they just try to filter out some of the noise. Even in the actual "real" conditioners the ground is fed straight through untouched so if the problem is with the ground the conditioner won't help at all.
Have you tried (temporarily) taking an old spare cord and removing the ground or using a cheater plug? If it still does it i'd check the conditioner as that should have fixed it or it could be in the amp. I'm assuming it hums even with the signal input (RCA cable) unplugged. If it's in the ground you can always install a dedicated ground just for that outlet... shouldn't cost much but make sure it's up to code.
I have a cheater plug on sub amp. The avr, as-eq1, reckhorn and s-converter do not have ground plugs (and I have tried taking them out of the loop one by one except for the receiver). Also the outlet they are connected into does not have a ground plug attached to it.
It only has the white noise when a signal is coming through the AVR - I.E. if it is muted then it stops but if there is nothing coming out (paused movie, cable station I don't have) but not muted then it still comes out. I have changed EVERYTHING even amps.
I tried disconnecting every coax cable on the same circuit as well as mine. Weird thing is the white noise goes on even without the coax in BUT when I watch cable tv I also get an additional thump added in when I change channels and the next channel registers or handshakes through the avr.
Since I have tried so much the ONLY consistent components were the sub and the receiver, everything else in the entire system and house has been disconnected at some point and tested.
From the coax thump and the non-coax dependent, constant white noise, I have 2 problems to deal.