The HDHomeRun will attempt to automatically scan for channels the first time it is connected to power, and will occasionally do a background scan every few days, but you may still need to run an initial channel scan.
step
To hear audio, you need a TV, AV receiver, or soundbar that can decode Dolby Digital or AC3 audio over HDMI. Most modern TVs can do this, though we’ve noticed a few Samsung TVs cannot. All Roku televisions should be able to play audio without any trouble.
Roku audio settings:
If you are still having issues: While watching live TV in the HDHomeRun app, press the * button and see if your “Volume mode” is set to “off” (this might not always be required, depending on the Roku model)
If you still cannot get audio to work, please open a Support ticket and we will help you.