Feel Like Complaining

Back to the humming problem. When Comcast installed our DVR a few months ago, the technician gave us his personal cell phone number and said we call call about anything. Well, maybe not to ask him if he's pick up some eggs and milk, but he was very nice so we thought we'd take him up on his offer. My husband called him and Dave said he would be by after he got off work to check out the problem. He explained to my hubby that the DVR is like a computer which has a fan and that is probably what we're hearing. He stops by and I mute the TV so he can hear it better. Of course, he can't hear it. I said "I can hear it right now." He starts to back away from the TV. He explained that what he generally hears in homes of people complaining of noise is much louder. I tried to explain about what I had read online about a 'ground loop issue'. He said "Now you're getting into reversed polarity and blah blah blah and that's not your problem." I'...

Our house has a hum. It's not a 'nice tune' kind of hum but rather a droning type hum than cycles the pitch from high to low. My husband started hearing it awhile back but of course I tune him out too so I didn't start hearing it until about three weeks ago. And it's about to drive me crazy. I can hear it more on one side of the house than the other and that includes the basement too. I have been putting my ear up to all kinds of things, anything that's plugged in. Can't find it. I've unplugged stereo's that we don't use, and the tv downstairs. We recently got a Cable DVR machine and thought it might be that. It has its own whirring sound but doesn't seem to be the same kind of noise we're hearing. We also have a Radon Pump and it has its own noise too. And it's more on the other side of the house. I walk around the living room with my head half cocked like a dog who hears a dog whistle in the distance. And it gives me headaches becau...