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What to do if audio isn’t working on your CommBox Atom

Troubleshoot audio issues like no sound, low volume or incorrect output settings on your CommBox Atom screen.

Applies to: CommBox Atom 65", 75", 86"

Step-by-Step Instructions

1. Use the remote control or side panel buttons to raise the volume.

2. Check if the screen is muted (toggle the Mute button on the remote).

3. Tap the Sidebar Menu > Inputs > Source Settings > Audio Settings.

4. Adjust volume, balance, bass, and treble levels.

5. If using an external source (like a laptop), make sure it’s set to output audio via HDMI or USB-C.

💡 Tip: If using external speakers, ensure they're connected to the correct output (Audio Out or SPDIF).

Troubleshooting / What to Do If It Doesn’t Work

  • No sound on HDMI? The laptop or device may be outputting audio to its own speakers.

  • Using OPS? Check the Windows sound settings are set to output through the CommBox screen.

  • Still not working? Log a ticket on the CommBox Support Portal