Orbit - Fix No Sound – Avantree Support

No sound from Orbit (TC580) is usually caused by an incompatible TV audio format, an incorrect audio connection, or disconnected Bluetooth headphones. Follow these 3 steps to find and fix the problem.

Check the Audio Signal Indicator and TV Settings

A flashing audio-signal indicator means Orbit is not receiving a valid audio signal, which may happen when your TV's digital audio format is not set to PCM when using Optical.

Play a TV program with sound and check the LED indicator at the bottom of Orbit.

Solid Blue

Valid audio signal detected. Continue to Step 3.

Flashing Indicator

Invalid audio signal. Check the settings below.

If the indicator is flashing, follow the instructions for your TV audio connection.

Optical (OPT)

Select Optical / Digital Audio Out in your TV's sound settings, if required.

Set Digital Audio Output to PCM / Stereo.

Find PCM Settings for Your TV Brand

Using a cable box or streaming device? If regular TV programs have sound but streaming apps do not, set the streaming device's audio format to PCM / Stereo, when available.

How to Set PCM for Streaming Devices / Cable Boxes

AUX / 3.5 mm

Select Headphone / Audio Out in your TV settings, if required.

Increase the TV's headphone output volume.

RCA (Red / White)

Make sure the RCA cable is connected to the TV's Audio OUT ports, not Audio IN.

The 3.5 mm end should connect to Orbit's AUX input.

Still flashing after changing the settings? Continue to Step 2 – Check the Audio Connection. If the indicator is now solid blue, skip to Step 3.

Check the Audio Connection

If the indicator is still flashing, Orbit may be using the wrong input selection or the audio cable may not be connected correctly.

Make sure Orbit is powered ON and its LCD screen is active.
Select OPT for Optical or AUX for 3.5 mm / RCA audio.
Reconnect the audio cable securely at both ends, from the TV's Audio OUT to Orbit's matching input.
Play TV audio again. If the indicator still flashes, try another compatible audio cable.

Connection reminder: Orbit (TC580) uses Optical or AUX/RCA for TV audio. It does not have the HDMI ARC connection used by Orbit Pro.

Once the audio signal is detected, continue to Step 3.

Check the Headphone Connection and Volume

If Orbit is receiving TV audio but you still cannot hear anything, your headphones may be disconnected or the volume may be too low.

Check Orbit's LCD screen for your headphone name and connection status. The screen should show TX, the correct input (OPT / AUX), and Connected beneath your headphone name.

If Your Headphones Are Not Connected

Turn Bluetooth OFF on nearby phones or tablets previously connected to your headphones.
Put your headphones into Bluetooth pairing mode.
Press Orbit's Search (magnifying glass) button.
Use the Up / Down buttons to highlight your headphone name on the LCD screen, then press Enter.
Wait until the screen shows Connected.

How to Put Bluetooth Headphones in Pairing Mode

If Connected but Still No Sound

Press Orbit's Volume + button and increase the volume on your Bluetooth headphones, if supported. If using AUX, also increase the TV's headphone output volume. Then test the sound again.

Review Orbit Troubleshooting

Still Need Help?

Tell us your TV and headphone models, whether you're using Optical, AUX, or RCA, whether Orbit's bottom LED is solid or flashing, and the Bluetooth connection status shown on its LCD screen.

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