HT381 - Troubleshooting: How to fix the no sound / not working issue? – Avantree Support

If you have something plugged into the HDMI port on your TV, please check and see if the port you're using is a HDMI ARC port. For most TVs, when something is plugged into the ARC port, its other audio output ports will automatically be muted. Please switch to another HDMI port.

IF you have a sound bar or AVR that's using ARC, please consider switching to Digital Optical instead.

All set up but can't hear anything through your headphones? Please follow the troubleshooting steps below:

1. Receiver and Transmitter Base should be well Connected.

Once the receiver connected well with the transmitter base, the LED on the receiver will be solid Green. If not connected well, please check Connect the Headphone (Receiver) to the Transmitter Dock to reconnect them.

2. Proper Audio Signal should be sent to the Transmitter

Please check Your TV setting again (Samsung TV, LG TV, Sony TV, Vizio TV…)

And start your Netflix / Amazon Prime Program first before change to PCM

Please contact us at support@avantree.com if the above doesn't help.