Fix No Sound After Setup – Avantree Support

Start with the TV connection, then use the transmitter and headphone lights to find where the problem is.

Follow These Checks in Order

Stop when the sound returns.

Match the Cable and Input Selector

Make sure the cable is connected to a TV audio OUT port and the transmitter selector matches the connection you are using.

Optical

TV Optical OUT

Transmitter OPT IN

Input selector: OPT

HDMI ARC

TV HDMI ARC / eARC

Transmitter HDMI ARC

Input selector: HDMI ARC

AUX

TV Headphones / Audio OUT

Transmitter AUX IN

Input selector: AUX

Check the Transmitter Audio Signal Light

Play a TV program with sound and look at the Audio Signal light on the transmitter.

Solid White The transmitter is receiving TV audio. Continue to Step 3.

Flashing White The transmitter is not receiving usable TV audio. Check your TV connection settings.

Flashing White? Go directly to your TV connection settings.

Check the Headphone Connection

If the transmitter is receiving TV audio but you still hear nothing, check the headphone LED.

Solid Orange

Connected to the Auracast transmitter. Continue to Step 4.

Flashing Orange

Searching for an Auracast broadcast. Keep the headphones near the transmitter and wait for solid orange.

Solid Blue

Connected through Bluetooth instead of the Auracast transmitter.

If the light is solid blue: double-press the multifunction button to switch back to Auracast.

Test the Sound

Play a regular TV channel or another program with clear speech, then raise the headphone volume.

Flashing White? Check Your TV Connection

Choose the connection you are using.

Optical HDMI ARC AUX / 3.5 mm

Using Optical

TV Sound Output: Optical / Digital Audio Out / External Speaker
Digital Audio Format: PCM or Stereo
Transmitter Input: OPT

Dolby, DTS, Bitstream, or Auto may prevent the transmitter from receiving compatible audio. Find the PCM setting for your TV brand .

Using HDMI ARC

TV Port: HDMI port labeled ARC or eARC
TV Sound Output: HDMI ARC / Receiver
eARC: Off
Digital Audio Format: PCM or Stereo
Transmitter Input: HDMI ARC

If needed, see how to disable eARC on your TV .

Using AUX / 3.5 mm

TV Sound Output: Headphones / Audio Out
TV Volume: Raise it to a normal listening level
Transmitter Input: AUX

PCM is normally not required for an analog AUX connection.

Sound Working?

You're done. No other settings need to be changed.

TV Sound Works, but Netflix, Roku, Fire TV, or Another Source Has No Sound

If normal TV audio works, the issue may be the audio format from the app, streaming device, or cable box.

Netflix / Prime Video Roku / Apple TV / Fire TV / Cable Box

Still Have No Sound?

Send us your TV model, connection type, transmitter light status, headphone light status, and a photo of the connected TV and transmitter ports.

Ask a Question