Brave 4/Pro Sound Issue Troubleshooting: No Audio / Low Volume / Excessive White Noise

📋 Overview

Audio recording issues are typically tied to external housing configurations (like waterproof cases), incorrect menu microphone sources, or a physical failure of the internal microphone capsule.

🛠️ Troubleshooting Steps

Step 1: Check Physical Cases and Audio Source Menus

1. Waterproof Case Warning: Check if the camera was inside the solid waterproof housing during recording. 

   The waterproof case is a completely hermetic seal designed to keep water out; it blocks over 95% of ambient sound waves, resulting in no/faint audio or muffled white noise. 

2. Menu Source Check: Enter the camera setup menu and verify that the "Microphone" setting is explicitly set to "built-in" when you are not using the external microphone. 

   If the menu settings are corrupted or acting erratically, execute a "Reset to Factory Settings".

Step 2: Isolate Microphone Defects (Low Volume/Heavy Hissing) 

If the camera records faint audio or massive crackling noise when used outside the waterproof case after a factory reset, determine when the issue began:

• Recent Onset: The microphone ports may be clogged with fine dirt/debris, or the audio codec firmware has glitched. Please contact the support team to try a manual firmware reflash.

• Defective out-of-the-box: If your new camera has been experiencing these issues since you first unboxed it, please provide a short video showing the issue to the support team for warranty service.

✉️ After-Sales Solutions

If a hardware microphone defect is confirmed, provide your Order ID, SN number, and current firmware version to support. 

For out-of-the-box failures, please contact after-sales support to obtain accessories such as an external wireless microphone kit or a windscreen to optimize audio capture, or to request other after-sales services.