Try the following:

1. Check the HearLink PLUS panel and make sure the OPT or AUX indicator is lit. If neither is lit, make sure the power and output cables are connected securely.
2. Verify that the HearLink PLUS transmitter is in TX mode and that the TX indicator is lit.
3. Either the A or B indicator on the HearLink PLUS panel should be lit. If it’s not, it’s a sign that the headset is not connected. Press the ON/OFF button once (short press) and check again. If one of the A/B indicators lights up, then the transmitter has connected to the headset successfully. You should now hear sound in the headset.
4. If you still don’t hear sound, turn up the volume on the TV itself (or by using the BeHear headset’s left-hand side volume control).

If the TV sound is unclear or distorted, try turning ListenThrough mode OFF, or reducing the transparency of ambient sounds via the ListenThrough microphones using the headset’s right-hand volume button.