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Larsco · 05-07-2009, 01:26 AM

I experienced the humming described about a year ago, and tried all of things recommended above regarding plugging and unplugging and moving things around, but nothing helped. So, I figured I'd share my experience and solution in case it helps someone out.

I discovered it was being caused by the cable line. When I disconnected the Comcast cable from the wall, the buzzing stopped. Of course, this wasn't a good permanent solution, since I want cable TV.

So, I tried a ground loop isolator as suggested above. I got one for about $10 online. It was designed to go right into the cable line, about the size and shape of a AA battery. This eliminated the humming, but caused some of the HD cable channels not to come in. Again, not a great solution because I want all the stations.

The final solution was to ground the cable line properly. I attached a copper wire to an upstream cable line splitter, and ran it to the pipe network in my basement. Problem solved! No humming, and all my channels now come in.

In discussing this situation with others, we decided it was Comcast's fault. I understand it is their responsibility to ground the cable locally when they perform the installation, which they evidently neglected to do.

05-07-2009, 01:26 AM	#6
Larsco Member Member since:Dec 2007 Location:Minnesota, USA Blu-ray collection:52	I experienced the humming described about a year ago, and tried all of things recommended above regarding plugging and unplugging and moving things around, but nothing helped. So, I figured I'd share my experience and solution in case it helps someone out. I discovered it was being caused by the cable line. When I disconnected the Comcast cable from the wall, the buzzing stopped. Of course, this wasn't a good permanent solution, since I want cable TV. So, I tried a ground loop isolator as suggested above. I got one for about $10 online. It was designed to go right into the cable line, about the size and shape of a AA battery. This eliminated the humming, but caused some of the HD cable channels not to come in. Again, not a great solution because I want all the stations. The final solution was to ground the cable line properly. I attached a copper wire to an upstream cable line splitter, and ran it to the pipe network in my basement. Problem solved! No humming, and all my channels now come in. In discussing this situation with others, we decided it was Comcast's fault. I understand it is their responsibility to ground the cable locally when they perform the installation, which they evidently neglected to do.