Vizio SB4021M-A1 SB4021M-A1 Quick Start Guide - Page 20

TECHNICAL SUPPORT There is no power. • Press the POWER button on the remote control or on the top of your Sound Bar. • Ensure the power cords are securely connected. • Turn the Subwoofer power switch to ON. • Plug a different device into the electrical outlet to verify that the outlet is working correctly. • To conserve power, the Sound Bar shuts off automatically after 30 minutes if not in use. There is no sound from the Sound Bar. • Increase the volume. Press Volume Up on the remote control or on the top of your Sound Bar. • Press MUTE on the remote to ensure the Sound Bar is not muted. • Select a different input source (Analog, Coaxial, or Optical). • Be sure the audio cable coming from the TV is connected to an audio output, not an audio input. • If listening to a USB source, be sure the files are in MP3 format. There is no sound coming from the Subwoofer. • If the lights on the Subwoofer are in a slow blink pattern, you will need to pair the Subwoofer with the Sound Bar. See Re-Linking the Subwoofer and Sound Bar on page 14. • Move the Subwoofer closer to the Sound Bar. • Turn the Subwoofer power switch to ON. • To conserve power, the Subwoofer will automatically enter a low power state when not in use. It may take up to 10 seconds for the Subwoofer to link after the Sound Bar is turned on. I hear buzzing or humming. • Ensure all cables and wires are securely connected. • Connect a different source device (TV, Blu-ray player, etc) to see if the buzzing persists. If it does not, the problem may be with the original device. • Connect your device to a different input on the Sound Bar. How do I listen to SRS TruSurround or Dolby Digital? • To activate SRS TSHD, press the Menu button on the remote and use the arrow keys to scroll to the TSHD screen to toggle between on and off. • To listen to Dolby Digital, your device must be playing content in Dolby Digital format. Dolby Digital is only available over Digital Coaxial or Digital Optical. I would like to adjust the sound on the Subwoofer and Sound Bar. • Adjust the bass and treble levels using the remote. • Try enabling/disabling SRS TruSurround. I want to return my Sound Bar to factory settings. • Press and hold the Power, Volume Up, and Volume Down buttons for 10 seconds to return your Sound Bar to its factory default settings. 18