buzz/hum from tv

Tim (Flemke), thank you for your note. It didn't help though (see below).

Paddlersean, like you, my TV is about a dozen years old too. My hum, however, is directly connected to the cable feed.

Comcast confirmed their cable is carrying a "very high signal", 20 . Normal is about 5-8, they say. The guy that came in yesterday brought along an attenuator. Using it lowered the hum some but didn't eliminate it. It however resulted in very degraded picture quality.

After eight weeks of this dance I finally gave up.
I cut my Comcast service.
Result? No hum. I don't have to worry about my speakers frying slowly in my presence and absence.
Side-effect? No cable service as well. I get to read, think, and do good more now! Oh, the $49/month savings is good too!

Comcast couldn't solve the problem. When I get around to it I am taking my money and account to DirectTV or Dish.

-s

I live near O'hara airport and some of the attenuators and or groundfault isolators actually cause interference with the jets. I could care less about cable. My HT sytem only uses my EAD dvd player.

Paddlersean,

I have the SAME problem as you that I still struggle with it. I have a 6 or 7 year old 27" JVC tube TV. I have an entertainment center with a stack of components next to the opening for the TV - so the TV and all the cabling is in close proximity. I have bad hum in my system with the TV on (and none with it off). I tried the ground loop breaker and it didn't work. Then I realized it was coming from the TV itself. If I listen to the TV's internal speakers, they buzz some as well, even with the volume set to zero. I can move interconnects around between my receiver and external amps and make some channels quiet, but never could get rid of it on all channels.

I am convinced it is an EMI emissions problem. My final test was to take the TV out of the entertainment center and onto the floor in front - no buzz even with the TV on. I am guessing it is the power supply transformer that is emitting noise that gets picked up by the cables which act as antennas. I have considered using to use some ferrous (steel not aluminum) sheetmetal as an EMI shield to try to isolate the TV from the rest of the system. But I never did try it and currently just live with the problem.

With the entertainement center like we have, there is no real way to physically separate the TV from the cabling, which is the solution. I am just holding out until I move everything to a basement home theater set-up where I will be able to separate them by using separate racks.

This does sound like the same problem. I do plan on trying to pull the tv out, as you said, and just see if the tv itself is still buzzing. If it is I might get the tv checked out. I'm waiting til after the holidays to experiment more. I'll update the post in a couple weeks.
That noise can realy drive you crazy on certain movies.
Another step would be a different rack, right now they are in a tight unit.

Hello:

I was looking at this thread and I have the exact same issue. Were you able to solve this?

Thanks.
John