Hi Connie1032,
It’s unfortunate to hear you’re not receiving sound from your DU8000 TV. There are a few troubleshooting steps you can try:
1) Please check the volume control of your TV, and then check the volume control of the soundbar.
2) Set Sound Output to TV Speaker by going to: Settings > All Settings > Sound > Sound Output
3) Check whether Digital Output Audio Format is set to Pass-Through by going to Settings > All Settings > Sound > Expert Settings > Digital Output Audio Format > Auto
If there is sound but it is not clear, run a diagnostic test. On the remote control, press the Home button. Go to Settings > Support > Device Care > Self Diagnosis > Sound Test.
I hope this helps. Should your issue persist, please contact Samsung Customer Support at 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week.
~Samsung Advisor