DatJet - you should be able to connect your receiver via Optical or HDMI cable, depending on your receiver's inputs. You can change the input (Optical, HDMI, etc) for your receiver in the Sound Settings in your TV's menu. If you are still having issues, please reach out to Samsung 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. ^Gina