Troubleshooting: Fix Strange Noises or No Sound from Streaming Services

When using your Avantree transmitter (and headphones/speakers set) with a TV in Optical or HDMI ARC mode, it is essential to set your TV’s Digital Output Audio Format to PCM (Pulse-Code Modulation) to avoid audio issues.

Failing to do so may result in:

1. Strange or loud noises, such as buzzing, squealing, or static sounds
2. No sound from streaming services like Netflix, Amazon Prime, Disney+, etc.

How to Set Your TV to PCM:

Samsung TVs:
Go to Settings > Sound > Expert Settings > Digital Output Audio Format, then select PCM.

LG TVs:

Go to [All Settings] → [Sound] → [Sound Out] → [Optical] → [Digital Sound Out], then select PCM.

Note: Turn off Dolby Atmos

Sony TVs:

Not sure how? Contact the device manufacturer or check our [TV Sound Settings Guide].

💡If the issue persists:
1. Restart your TV by unplugging it and plugging it back in.

2. Clean the optical/HDMI ports on both the TV and the transmitter using rubbing alcohol and a soft cloth or cotton swab.

• Try reversing the cable ends or using a different optical/HDMI cable.

• Make sure both ends are firmly and fully inserted.

3. Switch to AUX/RCA mode or test with a different TV to determine whether the issue lies with the setup or the devices.

4. Use a different USB cable to power the transmitter and plug it into a wall outlet instead of the TV’s USB port.