Originally Posted by David Bartley
Likewise, opening the menu on the Roku clock screensaver buzzes at vivid/cinema. I have my TV on a stand in front of a pair of (useless) french doors. If I open them the buzzing is a tiny bit quieter but still detectable (this just means that it's coming from the rear and bouncing off the doors). I can even hear the buzzing if I open my living room door and the refrigerator (about 25 feet away) coil or whatever is running. I wouldn't care if it was not noticeable during real use, but I noticed the buzzing while watching a CNN reporter talking against the backdrop of the vatican (lots of light coloured stone).
The PQ is great, no dead pixels, nothing else wrong afaict, so yeah, I'm reluctant to exchange it, but I will if Panasonic support doesn't help.
It's funny you mentioned doors behind it. Mine too is in front of doors, in my case a closet. They are 10 feet wide, the width of the room, split into 4 folding panels. The back of the stand is 18" from the doors (plenty of room to open them) and the TV itself is around 30" from the doors. I got the idea to try opening them just to see if maybe the sound was deflecting off the hard wall and back towards the viewing area and amplifying an otherwise minor buzzing problem. The buzzing slightly diminished with them open, but not to the point where it improved things during real content. Plus it looked ridiculous. Had the open doors solved the buzzing problem completely, I would have probably removed the doors and replaced them with neutral colored curtains to let the sound through. But it didn't provide much improvement. I may end up doing that anyway because it would provide a nicer backdrop, we'll see what the new screen does for me.
This isn't an ideal situation, but since I'm stuck in my condo for at least a bit longer, it's the only way it could work with furniture, cable outlets, plugs and sound. Frankly, the previous owner really screwed the place up. The closet the TV is in front of never used to be a closet, he added it as part of his home office so it is basically a walk-in closet with wall to wall doors with a ton of plugs and phone lines, but sadly, no cable and its completely useless for my purposes so it's just filled with excess crap. One of these days I'll be able to get out of the place and have a legitimate home theater. But I'm making it work.