Harmony A2 - Fix No Sound – Avantree Support

Before You Start: No sound may mean the speaker is not connected to the transmitter, the transmitter is not receiving audio, or the volume is too low. Follow these steps to check your Harmony A2.

Step 1 – Check the Auracast Speaker Connection

Solid Orange – The speaker is connected and receiving audio.

Flashing Orange – The speaker is not receiving audio.

Turn on the Harmony A2 transmitter and speakers.
Keep the speakers near the transmitter while they connect.
If a speaker keeps flashing orange, turn it off and back on. Keep it near the transmitter and wait a few seconds for it to reconnect. The speaker LED should turn solid orange.

Note: The speaker must be in Auracast mode (orange LED) to connect to the transmitter. If the LED flashes red and blue, the speaker is in Bluetooth pairing mode and won’t connect. Press the Auracast button once to switch modes.

Step 2 – Check the Audio Signal & Transmitter Input

Play audio and check the transmitter’s AUX/OPT input indicator.

Solid White – Audio input is detected. Continue to Step 3 →

Flashing Red – No valid audio. Check the input and audio settings below.

Choose the input that matches your audio source.

Optical

Press the transmitter’s AUX / OPT button to select OPT.
Set TV Sound Output to Optical / Digital Audio Out.
Set Digital Audio Format to PCM / Stereo.

AUX

Press the transmitter’s AUX / OPT button to select AUX.
Set TV Sound Output to Headphones / Audio Out.
Increase the TV volume.

Bluetooth

Press Phone / Pair on the transmitter to select Phone input.
Press and hold Phone / Pair for about 4 seconds. The indicator flashes red and blue when pairing mode is ready.
Open your phone’s Bluetooth settings, select the Harmony A2 transmitter, and play audio.

Find PCM Settings for Your TV →

Why PCM? For Optical connections, the transmitter needs a compatible stereo signal. Set the TV audio format to PCM / Stereo. Dolby, DTS, Bitstream, Auto, or Pass Through may cause no sound.

Step 3 – Check Volume & Restart

Press + on the transmitter to raise its volume.
Press + on each Harmony A2 speaker to raise its volume.
Increase the volume on your TV, phone, or other audio source and make sure it is not muted.
Try another song, video, channel, or app.
If there is still no sound, try a new cable of the same type.
Turn off the transmitter and speakers, then turn them back on and test again.

Still No Sound?

Tell us which audio input you are using, your TV model, and what indicator lights you see on the transmitter and speakers.

Contact Avantree Support →