My FS70 has developed a noticable buzz from the back (not the speakers) I know that it always buzzed and I realise that this is normal for TVs (especailly large ones). But I am sure that its louder than before. Late at night, when its quite and I have the volume on approx 5-6 notches, I can hear the buzz quite clearly, even over the soundtrack of the program, when I am sitting about 8 feet away. I had engineers in yesterday to have a look (And look at some staining) and they think that its normal.. But its starting to drive me nuts.. Can anyone else with an FS70 confirm if they get buzzing too?