With our troubleshooting guide, you will able to fix YouTube TV not working on Roku easily. If YouTube TV on your Roku isn’t working, there are a few troubleshooting steps you can take:1. Restarting Roku device2. Update YouTube TV app3. Resetting Router and TV4. Turning off the “Volume Mode"5. Resetting Roku deviceIf you’re trying to watch YouTube TV on Roku and there is no sound, sorry. You can fix this by changing the ‘Volume Mode’ to ‘Off’ within the YouTube TV app.