Just got a Samsung 55 inch Curved 6250 TV. Connected to the TV is DirecTV receiver, Amazon Firestick, and Roku Stick. We also connected a sound bar to the TV, but the only options of connecting the sound bar are bluetooth or optical. I can't use HDMI or component because the TV doesn't have component and the sound bar doesn't have HDMI. First, I connected the sound bar to the tv via blutooth. The audio/video was out of sync, so instead I connected to optical (my only other choice.) Sound worked fine for a while, but then suddenly stopped. We were going around checking different apps to make sure sound would come out of the sound bar. Youtube, Plex, DirecTV, etc, (sound was fine.) We went to the web browser, and suddenly the sound changed to TV speakers! We got out of the web browser, changed audio back to optical and went back to DirecTV and no sound on sound bar - and, although optical showed activity on the TV, no sound would come out of sound bar. We spent 2 hours completely perplexed and trying to think of everything. Checking connections, different TV settings. The only way we could get sound to start coming out of optical again was forgetting bluetooth, reconnecting to bluebooth, then changing back to optical. This sound bar is a Sanyo, but we also worked with a Vizio sound bar experiencing pretty much the same things I described above. Is there something we are doing wrong? We even tried using bluetooth and going to the audio delay setting to see if that would help sync the audio but changing that setting made it worse. In the past, we have always just used component and never had problems but that isn't an option on this TV as I see no component connections at all on the back.