When you power off your TV with either the Sound bar or TV remote, the Sound bar will automatically power off. When you power on your TV with either the Sound bar or TV remote, the Sound bar will automatically power on. To disable this function ON/OFF press the Source button on the Sound bar remote for more than 5 seconds while the Sound bar is powered off. Once this function is set to OFF, the Sound bar will power off automatically when the TV is powered off but will not power on automatically when the TV is powered on. If your remote does not have a source button (HW-F355/FM35) press the Function button on the front panel for 5 seconds instead, be sure the Sound bar is off.