Hi My Samsung TV model UE55F8000 does not play TV channels in 5.1, when they are broadcasting in 5.1. when the optical lead is in the TV. It only play TV channels in 5.1, when connecting the optical lead direct in to my sky +H D box . This means that if I try to watch a freeview channel on my TV, there is no sound. I would like to have the optical lead into the TV as you are supposed to, is there a setting that I have missed to help me do that?? PLEASE HELP!!! I have tried everything.