I have small bands of distortion across my TH42PW4B. It seems to be associated with the mains lead. Take off the ferrite core and it gets much worse. With the core back on, it is better and in moving pictures hardly notices, but it shouldn't be there. I'm using an S-video connector from a Bose 1-2-3 and Sky+ receiver. Any suggestions. Plugging in the Bose supplied video cable also helps, but not if near a mains cable.