How to pair, connect and lock the headphones to the transmitter again for HT4186? – Avantree Support

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HT4186 – Headphones Not Connecting? Pair & Lock Them Again

Follow these steps if your HT4186 headphones and transmitter no longer reconnect automatically.

Important: Do not stop after pairing. Complete the LOCK step so the headphones can reconnect automatically next time.

Before You Start

Turn your TV OFF and turn Bluetooth OFF on nearby phones, tablets, laptops, TVs, and other devices previously connected to the headphones to help avoid interference.

Step 1 – Put the Transmitter Into Pairing Mode

Make sure the transmitter is ON.

Press and hold the A / 1 button until the Bluetooth indicator next to A / 1 flashes Red and Blue.

Red and Blue flashing next to A / 1 = Pairing Mode

Step 2 – Put the Headphones Into Pairing Mode

Start with the headphones OFF.

Find the MFB button

+ ▶ −

MFB = the middle button

It is located between the + and − buttons.

Press and hold the MFB (Multi-Function Button). Keep holding until the headphone LED flashes Red and Blue. You may also hear “Pairing.”

Flashing Red and Blue = Pairing Mode

Important: Simply turning the headphones ON is not enough. Make sure the LED is flashing Red and Blue.

Step 3 – Keep Them Close and Wait

Keep the headphones close to the transmitter. Do not press any more buttons. Wait a few seconds for them to connect.

Solid Blue = Connected

Step 4 – LOCK the Headphones to the Transmitter

DO NOT SKIP THIS STEP

Make sure the headphones are already connected — Solid Blue.

On the transmitter, press and hold the A / 1 button for about 10 seconds.

Release the button when the A / 1 indicator briefly turns Pink.

Pink briefly = Lock successful

Step 5 – Test Automatic Reconnection

Turn the headphones OFF.
Turn the transmitter OFF.
Wait about 5 seconds.
Turn the transmitter back ON.
Turn the headphones back ON.
Wait about 5–10 seconds.

Solid Blue = Reconnected successfully

If they reconnect automatically, you're done. Turn your TV back ON and use the HT4186 normally.

Still Not Connecting?

Transmitter not flashing Red and Blue?
Hold A / 1 again until the Bluetooth indicator next to A / 1 flashes Red and Blue.
Headphones not flashing Red and Blue?
Turn them completely OFF, then press and hold the MFB until Red and Blue starts flashing.
Headphones connect to another device?
Turn Bluetooth OFF on nearby phones, tablets, laptops, TVs, and other Bluetooth devices.
Both are flashing but do not connect?
Move the headphones closer to the transmitter and wait.
They connect but do not reconnect next time?
Repeat the LOCK step and make sure the A / 1 indicator briefly turns Pink.

Pair & Lock Still Not Working?

Reset both the transmitter and headphones, then repeat the Pair → Connect → Lock steps above.

Reset HT4186

Need More HT4186 Help?

View All HT4186 Guides

Still Can't Connect?

Contact Avantree Support and tell us:

What light you see on the transmitter
What light you see on the headphones
Whether you saw the Pink lock indicator
Whether the headphones connect to another Bluetooth device

Contact Avantree Support