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Crescendo 3D - Fix No Sounds

  • Updated
NO SOUND TROUBLESHOOTING

Crescendo 3D – No Sound From Headphones?

Follow these steps to restore TV sound on your Crescendo 3D (HT7100-D).

Before You Start: Turn on the transmitter and headphones. Play a TV channel or video with sound.

Step 1 – Check the TV Audio Cable

  1. Make sure the cable is firmly connected at both ends.
  2. Connect the TV's audio OUT port to the transmitter's INPUT port.
  3. Use only one TV audio connection – Optical, HDMI ARC, or AUX:
    • OPT – Optical cable.
    • HDMI ARC – HDMI cable.
    • AUX – 3.5 mm cable.
  4. Set the transmitter's SELECT INPUT switch to match your connection.

Step 2 – Check TV Audio Settings

Open the connection you are using:

Using an Optical Cable
  1. Connect TV Optical OUT to transmitter OPT IN.
  2. Set TV Sound Output to Optical / Digital Audio Out.
  3. Set Digital Audio Format to PCM / Stereo.
  4. Set transmitter SELECT INPUT to OPT.

Can't find PCM? Use the guide for your TV brand.

Find PCM Settings for Your TV →
Using HDMI ARC
  1. Connect the TV's HDMI ARC / eARC port to the transmitter's HDMI ARC 1 port.
  2. Set TV Sound Output to HDMI ARC.
  3. Set Digital Audio Format to PCM / Stereo.
  4. Turn eARC OFF in the TV settings.
  5. Set transmitter SELECT INPUT to HDMI ARC 1.

Can't find PCM? Use the guide for your TV brand.

Find PCM Settings for Your TV →
Using AUX / 3.5 mm
  1. Connect TV Headphone / Audio OUT to transmitter AUX IN.
  2. Set TV Sound Output to Headphones Out.
  3. Increase the TV volume.
  4. Set transmitter SELECT INPUT to AUX.

Step 3 – Check the Audio Signal Light

Check the transmitter's audio signal indicator while the TV is playing.

Solid White – Valid TV audio detected.
Flashing White – No valid TV audio detected.

If flashing white:

  1. Optical: Set TV Sound Output to Optical and Audio Format to PCM / Stereo.
  2. HDMI ARC: Select HDMI ARC as the TV Sound Output, set PCM, and turn eARC OFF.
  3. AUX: Set TV Sound Output to Headphones Out and increase the TV volume.
  4. Check the cable and transmitter's SELECT INPUT switch.
Step 4 – Check the Headphone Connection
  1. Set the headphone mode switch to TV/BASE, not Bluetooth.
  2. Turn on the transmitter and headphones.
  3. Keep the headphones near the transmitter and wait for them to connect.
Headphones – Solid Blue – Connected.

Headphones not connected? Follow the guide below to connect the headphones to the transmitter.

Crescendo 3D – Connect / Add Headphones →
Step 5 – Check the Volume
  1. Increase the headphone volume.
  2. Make sure the TV program is not muted.
  3. Try another TV channel or video.
Only Certain Apps, Channels or Cable Box Have No Sound?
  1. Play the affected program.
  2. Set the TV or streaming device's audio format to PCM / Stereo.
Cable Box Audio Settings Guide →
Still No Sound? Restart the Connection
  1. Turn off the transmitter and headphones.
  2. Reconnect the TV audio cable.
  3. Turn on the transmitter.
  4. Turn on the headphones, select TV/BASE, and test again.

Still No Sound?

Tell us your TV model, cable type, transmitter LED status, and headphone LED color.

Contact Avantree Support →

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