Before You Start: No sound usually means the headphones are not connected to the transmitter, the TV is not sending a compatible audio signal, or a cable or volume setting needs attention. Follow these three steps to find and fix the problem.
Step 1 – Check the Headphone Connection
Turn on the Oasis Plus transmitter and HT5006 headphones. The set is factory paired, so they should connect automatically.
Not Connected? Follow the pairing guide to reconnect and lock the headphones to the transmitter.
How to Pair, Connect & Lock the Headphones →Step 2 – Check the TV Audio Signal & Settings
Play TV audio and check the transmitter’s OPT / AUX indicator.
Choose your TV connection type and check the matching settings.
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 the Cable, Volume & Restart
1. Check the cable connection: Make sure the cable is securely connected to the correct input port on the transmitter. Use only one audio connection: Optical or AUX.
Optical Cable
Connect to the transmitter’s OPT input from TV.
AUX Cable
Connect to the transmitter’s AUX input from TV.
- Increase the volume on the headphones. For AUX, increase the TV volume too.
- Make sure the TV is not muted. Try another channel, video, or app.
- If there is still no sound, try a new cable of the same type.
- Turn off the transmitter and headphones, then turn them back on and test again.
No Sound on Certain Apps or Cable Boxes? Set the TV or streaming device’s digital audio format to PCM / Stereo.
Cable Box Audio Settings →Still No Sound?
Tell us your TV model, connection type (Optical or AUX), the transmitter’s OPT / AUX indicator status, and whether the headphones connect to the transmitter.
Contact Avantree Support →
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