I have a Samsung LCD TV, model KE40C580 TV. My son gave me a sound bar for Christmas, Panasonic SC HTB208. To get the best clearest sound (I am a little deaf and have to wear hearing aids) Panasonic advise to connect via hdmi cable only. I have tried this but cannot get any sound through the hdmi. But if I connect the Optical cable I can get sound but it's not as good or clear as it should be. Can anyone suggest what I am doing wrong in as much as I cannot connect through the hdmi cable to get the best sound through my sound bar. Thank you so much. Julie