Originally Posted by crkpot
Mine has a slight buzz also but I have to be listening for it. It's the same as yours when the backlight is full brightness like on the home screen, you can hear it more. Do you have yours on a wall mount? I attribute most of being able to hear the buzz on mine to a flimsy wall mount that is adjustable to let the panel lean forward. Also the tv is mounted on a hollow wall. Everything is amplified. When i got the dvr function working on the tv, I double sticky taped a usb drive on the back and the noise from the drive is amplified for the same reason, I can hear it spin up and read a lot more then a little hard drive should. Someday I plan to reinforce and insulate at least the mounts.
Thanks for your replies Michaelll and crkpot.
crkpot, I was just about to post saying that the buzz is proportional to the backlight level. The buzz is pretty low and can only be heard is a quiet room. When I turn the backlight level up to 100 (this makes the LEDs much brighter) the buzz is similar to what I hear when I go to the home screen (so I'm assuming that the backlight on the home screen and when you power up the tv is 100). At a backlight level of 30, which is what I'm using, it's not audible.
The tv is not mounted, but it is in a corner, so there could be some sound amplification there. I can hear the buzz sitting ~7 ft from the tv with the backlight at 100 and a volume of ~4 or below.
I'm not too worried about the buzz (especially if others hear it too) because I don't have the backlight high in any of my video settings for it to be audible. However, if others aren't noticing this, then maybe there is a problem with getting power to the LEDs in my tv and I'd rather just exchange it and not have to worry about the "problem" getting worse...
Thanks for the help everyone