Originally Posted by pinehurstnc
Get a good surround sound system and crank it up, then you won't hear any buzzing.
Depending on the dynamic range of the source material, how loud the buzz is, and how tolerant your neighbors are, that may be impossible. On my Samsung I could play movies at reference level and still hear the buzz during quiet scenes.
My Samsung was sitting in the far end of a double parlor, and I could just barely hear it from my bedroom, if my bedroom door was open and the fridge wasn't running. That's about 25-30 feet line of sight, with the TV aimed perpendicular to me, so I was only getting reflections, not directional sound enhancement. Oh, and this was with my desktop PC running a few feet next to me, with the open doorway another foot to my left. And I could still hear the TV buzzing. You can imagine what it sounded like sitting directly in front of the TV, where the proximity and directionality made it much worse. Here's another reference point: play the intro to Star Trek when just the music is playing, turn the TV's volume to 60, and you could still hear the buzz. It buzzed the worst when the screen was bright, but even with a perfectly dark screen it was still pretty loud.
Anyone who suggests that "turning up the volume" is a solution either hasn't heard a set as loud as my Samsung was, or their ears aren't very sensitive to higher frequencies. I recorded the Samsung buzz with a mic and looked at the spectrum in Matlab. It starts at a pretty high frequency, and incidentally is all 60Hz harmonics.
On the other hand, I've seen a 50" '09 Samsung plasma in a quiet environment that was almost virtually silent, even if you stuck your head behind it.
My LG buzzes as well, but it's not nearly as loud, and it is only coming from the back of the set, and not directional radiating off the panel. If the room is quiet I can hear the LG buzzing from anywhere in the room ~(16' x 11' x 8'), but I can drown it out by turning the the surround sound volume up. There is absolutely no way I could have drowned out the buzz from my Samsung set.