I have a Philips plasma tv and Philips dvd home theater system. I used to get the option of sound from the tv through my dvd speakers when I connected by scart but now I have changed to a HDMI cable I don't ? The cable works fine when watching dvd's so its not faulty and I have tried what I think is every setting on both tv and dvd to make normal (digital) tv sound work through the dvd speakers but have drawn a blank. I have also connected up red/white audio cables to the audio in as I thought this may make a difference but these were just off my old hifi do I need special ones ? Sorry to be such a thicky but any help gratefully received !