Hi, this can be caused by many different issues, conflict with an older peripheral, broadcast aspect ratios, etc. If the issue persists, please reach out to Samsung TV 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. Thanks, ^Scott