Hi there! If the video on the TV and audio from the HW-B650 Soundbar are not synchronized, press the SOUND CONTROL button on the soundbar remote until you see AUDIO SYNC on the display. You can then set the audio delay between 0~300 milliseconds by using the Up/Down buttons. You can also try the below to minimize the delay: 1) Connect the source directly to the Soundbar’s HDMI input, then connect the Soundbar to the HDMI ARC input on the TV. 2) On the TV, set the Sound Delay level to 0. Home > Settings > Sound > Expert Settings > Digital Output Audio Delay: “0” 3) Change the audio format to PCM on both the source device and the TV. Please also make sure you are running the latest firmware update, which includes improved connectivity. You can update your firmware by using a USB device. Should you need further assistance with this issue or have any questions about features or operation.
Please contact Samsung Customer Support at 1-800-SAMSUNG (ask for Soundbars),
available 8AM -12AM EST, 7 days a week, LiveChat on Samsung.com
~Samsung Solutions