Having purchased this TV three weeks ago its got the buzzing problem. Had the engineer out, says scan coils and nothing can be done. Could try exchanging but likely with have same or even worse problem on a replacement set . I spoke to Toshiba today and they are aware of buzzing, mainly with the Picture Frame TV, but are not planning any design/engineering changes to eliminate this annoyance on this TV. Also its interfering with the sound through my KEF 5.1 speaker setup. With the TV switched on the Kefs buzz. It appears it could be harmonic interference generated by the TV and picked up by the Sub woofer and pass on to the amp and speakers. Getting the TV taken back and refunded this Saturday. Sadly disappointed with an otherwise lovely TV.