Recently purchased a 28PL4, but I am having problems in getting the best set up. I have a video, Sky digital and a DVD player. Whats the best way I can set these up, as at the moment I am having interference problems. I have DVD into digibox and that into Scart 1 on T.V and I have the video into scart 2 on T.V. I get problems with interference and poor picture quality on DVD? what shall i do?