Hi RDW! Samsung soundbars feature multiple auto power off functions depending on connection type. So that we can walk you through the setup, please reach out to Samsung Audio Support at:
• Phone: 1-800-SAMSUNG / Available 8 AM - 9 PM EST, Mon - Fri
• LiveChat or Email: https://www.samsung.com/us/support/#contact_us_for_support
We look forward to hearing from you.
^Tim