My question is can the Optical out be used (with a RCA adapter) for wireless headphones without cancelling the TV speakers. I am looking at the Samsung NU7100 58" TV and I have a question about the model. When I set the Sound Output mode in Settings to TV Speaker, Spotify plays fine, but when I switch to Optical Out, no sound. ii) You are on a Digital Channel. The Speaker Select setting allows you to choose between using an external device or your Samsung TV's internal speakers for audio output. A better option for sending audio from your TV to an external audio system is the digital optical audio output connection. i) You are using a coaxial (RF) cable going directly to the TV (no Cable Box or VCR). v) Smart TV app that supports 5.1 audio… YouTube, Netflix, and Plex hit the Optical Out just fine. Did a sound test and it was perfect, but no sound from any channel, just the show without sound. This is from p.36 of the manual: "If you connect an external audio device using an optical cable, the Sound Output setting is automatically changed to the connected device. iv) USB device with a video file that contains a supported 5.1 audio codec. Your TV may be getting picture, but it won't be sending sound to your receiver. Can you try using a digital optical cable between the TV audio out (digital optical port) and the soundbar's TV digital optical in port? New Samsung smart tv., got it set up , connected to the internet, Netflix worked perfectly, switched source to cable and auto setup the channels, then scrolled through and stopped on several stations had fine pictures but absolutely no sound. Without proper cabling, you'll see your Smart TV apps on-screen, but you'll have no sound coming from your Home Theater System. Your Smart TV needs to send its audio signal to your AV receiver in order for you to properly hear the sound coming from your Smart TV's apps. But when streaming netflix thru the smart hub, no sound at all. Set the home theater or stereo system to the appropriate input and mode for the optical connection. iii) That channel is broadcasting 5.1 digital audio. Connect a digital optical cable to the digital optical output on your TV. Is the smart hub incapable of sending audio out … Select "TV Speaker," and then set the TV Speaker option to "On." Check if you can hear sound after you complete each step. Update - … I see by the specs on the model that the old RCA audio out ports have been eliminated and replaced with an Optical Audio (Toslink) out. I've had a Samsung Smart TV linked via an optical out cable to a Marantz CR610 hifi system for 4 years and everything worked OK, including Netflix. Troubleshoot no sound through the Optical output. Securely connect one end of the optical digital cable to the optical out on your TV. I have an optical audio line out to my receiver. Sound from cable box goes to my Samsung soundbar hw-h450 just fine. To view or modify this setting for most Samsung TV models, press the "Menu" button on your TV's remote control and select the "Sound" menu option. Change the Sound settings in the TV. Also confirmed for me on a Samsung KS8500. Connect the other end of the cable to a corresponding digital optical input on a soundbar, home-theater-in-a-box system, or home theater receiver. The old TV gave up the ghost, so in September I bought a new Samsung UE50NU7400 4K TV, connecting it exactly the same way as the old TV.