Hi Steve, I'm sorry to see you are having issues with your TU7000 screen going black while your audio still plays. So that we can better assist you, please reach out to Samsung Support at:
― Phone: 1-800-SAMSUNG / Available 8AM - 12AM EST, 7 days a week
― LiveChat or Email: https://www.samsung.com/us/support/#contact_us_for_support
We look forward to hearing from you. ^Val