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HT4189 - Fix No Sound

  • Updated

Before You Start: Turn on the HT4189 transmitter and headphones. Play a TV channel or video with sound.

Step 1 – Check the Headphone Connection

  1. Make sure the transmitter and headphones are turned on.
  2. Keep the headphones close to the transmitter.
  3. Check the headphone LED indicator.
Solid Blue – Connected. Continue to Step 2.
Flashing Red & Blue – Pairing mode.

Not connected? Turn off Bluetooth on nearby devices previously paired with the headphones. Then follow the Pair & Lock guide.

HT4189 – Pair & Lock Guide →

Step 2 – Check the TV Audio Cable

  1. Make sure the audio cable is firmly connected at both ends.
  2. Connect the TV's audio OUT to the transmitter's audio INPUT.
  3. Use the correct connection for your TV: Optical or AUX / RCA.

Step 3 – Check TV Audio Settings

Open the connection you are using:

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.
Find PCM Settings for Your TV →
AUX / 3.5 mm
  1. Connect TV Headphone / Audio OUT to transmitter AUX IN.
  2. Set TV Sound Output to Headphones Out, if available.
  3. Increase the TV volume.
Red / White RCA
  1. Connect the TV's red and white Audio OUT ports to the transmitter's AUX input using the appropriate RCA-to-3.5 mm cable.
  2. Make sure the TV ports are labeled OUT, not IN.
Step 4 – Check the TV Audio Signal

While the TV is playing, check the transmitter's OPT/AUX indicator.

OPT/AUX Solid (Steady) – TV audio detected.

OPT/AUX Flashing – No audio signal detected. Check the cable, TV sound output, and PCM setting if using Optical.

Step 5 – Check the Volume
  1. Press Volume + on the headphones.
  2. Make sure the TV program is not muted.
  3. Try another TV channel or video.
No Sound on Certain Apps or Cable Box?

If regular TV sound works, set the TV or streaming device's digital audio format to PCM / Stereo.

Cable Box Audio Settings →
Still No Sound? Restart
  1. Turn off the transmitter and headphones.
  2. Reconnect the TV audio cable firmly.
  3. Turn on the transmitter, then the headphones.
  4. Wait a few seconds for the solid blue connection light, then test again.

Still No Sound?

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

Contact Avantree Support →

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