Whenever I change from Pixel Plus to 100HZ mode eg for watching footie or poorer transmittion Sky channels, I get an audible buzzing from the back of my set. I can hear it from my viewing position 2.5m away with the volume at normal levels. Anyone else out there have this same problem? I get no buzzing in pixel plus mode. This is my second set and I got the same problem with the first one. I know that Sony TVs tend to have this problem on 100Hz but I haven't heard too many buzzing complaints for Philips pixel plus models. I find double line mode unwatchable for football as I get the most digital smearing with this mode and hence 100Hz is the only option. Since I watch tonnes of sport this is a big issue for me. Have I got another faulty set or is this something I have to put up with for 100Hz? Only other option I have is to swap for FQ80 as the FX66 is like gold dust now. Help and opinions would be appreciated.