Hi, I got an LG Home Theatre system (HS33S) and a Samsung Smart TV. I can't get any sound out of the TV with the HT. I connected it with an optical cable. I can see the red light in the optical cable coming from the TV, but it doesn't work when I connect it to the HT and turn the HT mode on the TV. What might be the problem? Is the Samsung TV compatible with the LG Home theatre system?