I have had my Sky + box connected to my 3805 via an optical lead for the past year with no problems however recently I cannot seem to get any sound from SKY Movie channels 1, 2 or 3 ? The sound from the rest of the Movie channels is fine ? The sound from channles 1, 2 and 3 is fine when played back through my plasma via scart. Any ideas on what could be causing this problem ? I have noticed that the " PCM " box on my 3805 is not highlighted when Movies channels 1, 2 or 3 are selected yet appears when the rest of the Movie channels are selected. Hope you get my drift. Any help, anyone ??