Hikvision Audio Not Working? 7 Fixes That Worked for Me

Hikvision Audio Not Working? Here's How to Fix It

If your Hikvision camera is failing to capture or play back audio, you're not alone. This guide covers brand-specific tools, model resets, and diagnostics to resolve the issue efficiently. Whether you're dealing with a DS-2CD2087G2-LU or DS-2CD2347G2-LSU/SL model, follow these steps to restore sound functionality.

Quick Fixes for Hikvision Audio Issues

Before diving into complex diagnostics, try these quick checks that can resolve the majority of audio issues in under 30 seconds:

• Check the Microphone/Speaker Toggle: Open the Hik-Connect app, navigate to Device Settings, and ensure both Microphone and Speaker are enabled. Disabled toggles are a common cause of audio failure.
• Verify App Permissions: For Android users, go to Settings → Apps → Hik-Connect → Permissions. Ensure Microphone and Speaker are granted, iOS users should check Settings → Hik-Connect and toggle these permissions on.
• Power Cycle the Camera: Unplug the camera from its power source for 30 seconds, then reconnect. This can resolve temporary glitches.
• Restart the Hik-Connect App: Force-close the app and reopen it. Sometimes, app-level issues prevent audio from functioning properly.
• Check the Power Cable/Battery: For battery-powered models, ensure the battery is fully charged. Wired models should have a stable power supply connected to a transformer providing 16-24V AC.

Step-by-Step Troubleshooting for Hikvision Audio Failures

Check Your Camera’s Audio Codec Settings

Hikvision cameras require specific audio codecs to function correctly. Open the Hik-Connect app and follow these steps:

1. Navigate to Device Settings → Advanced Settings.
2. Look for the Audio Codecs option. Ensure G.711 or AAC is selected. Other codecs may not be compatible with the app or playback systems.
3. If a different codec is selected, change it and save the settings. Restart the camera if necessary.

Use the SADP Tool for Network and Hardware Diagnostics

The SADP Tool is a Hikvision-specific diagnostic utility that can identify network or hardware-related audio issues:

1. Download the SADP Tool from Hikvision’s official website.
2. Connect your camera to the same network as your computer.
3. Launch the SADP Tool and select your camera from the list.
4. Click Device Status to check for Audio Module Errors or Codec Mismatch alerts.
5. If an error is detected, update the firmware via the Firmware Upgrade section in the Hik-Connect app.

Verify Firmware is Up to Date

Outdated firmware can cause audio compatibility issues. To update your camera’s firmware:

1. Open the Hik-Connect app and go to Device Settings → Firmware Upgrade.
2. If an update is available, follow the on-screen instructions to install it. Ensure the camera remains connected to power during the update.
3. After the update, restart the camera and test the audio functionality.

Reset the Camera Using Model-Specific Instructions

If the issue persists, performing a factory reset may resolve the problem. The process varies slightly depending on the model:

• For DS-2CD2087G2-LU: Locate the reset button on the rear panel. Press and hold it for 10 seconds while the camera is powering on or rebooting. This will restore factory defaults.
• For DS-2CD2143G2-IU: Follow the same steps as the DS-2CD2087G2-LU model. Ensure the camera is reconfigured in the Hik-Connect app after resetting.
• For DS-2CD2347G2-LSU/SL: Hold the reset button for 10 seconds until the lights flash, indicating a successful reset. Reconfigure the camera in the app and re-pair it with any NVR systems if applicable.

Re-Pair the Camera with an NVR System

If your camera is part of an NVR setup, re-pairing it may resolve audio issues:

1. Access the NVR’s Device Management section.
2. Locate the camera in the list and remove it from the system.
3. Re-add the camera via Add Device → Camera → Wi-Fi or Ethernet.
4. Ensure the Microphone and Speaker toggles are enabled in the Hik-Connect app.

Advanced Diagnostics and Professional Support

Access the Device Status Monitor

The Device Status Monitor in the Hik-Connect app provides real-time insights into your camera’s health:

1. Open the app and navigate to Device Health → Device Status Monitor.
2. Look for any Audio Module Errors or Hardware Faults alerts.
3. If an error is detected, contact Hikvision support with the diagnostic logs for further assistance.

Contact Hikvision Support with Diagnostic Logs

If all troubleshooting steps fail, contact Hikvision support directly:

1. Open the Hik-Connect app and go to Device Health → Video Quality Diagnosis.
2. Run the diagnostic test and save the logs.
3. Visit Hikvision Support and submit a support request, attaching the diagnostic logs.
4. Provide details about the camera model, firmware version, and steps taken so far to expedite resolution.

Understanding Root Causes of Hikvision Audio Failures

Audio failures on Hikvision cameras can stem from several root causes, including:

• Incorrect Audio Codec Settings: If the camera is set to an incompatible codec (e.g. G.729), audio may not function properly.
• Outdated Firmware: Older firmware versions may lack support for certain audio features or have bugs that cause audio failures.
• Hardware Faults: Physical damage to the microphone or speaker components can prevent audio capture or playback.
• Network Issues: Poor network connectivity can disrupt audio transmission, especially in models that rely on Wi-Fi (though Hikvision wired models are less affected).
• App-Level Settings: Disabled permissions or incorrect app settings can prevent the Hik-Connect app from accessing the camera’s audio features.

In the UK, dense building materials (e.g. solid brick walls) and modern glazing with low-E coatings can significantly reduce Wi-Fi signal strength, indirectly affecting audio performance in wireless setups. However, Hikvision’s wired models are less impacted by these factors.

Prevention and Long-Term Care for Hikvision Cameras

To prevent future audio issues, follow these best practices:

• Regular Firmware Updates: Ensure your camera’s firmware is always up to date to maintain compatibility with the Hik-Connect app and avoid bugs.
• Check App Permissions: Periodically verify that Microphone and Speaker permissions are enabled in the Hik-Connect app and on your device’s settings.
• Monitor Device Health: Use the Video Quality Diagnosis tool in the app to check for early signs of hardware faults or network issues.
• Use Surveillance-Grade Components: For wired models, use surveillance-rated HDDs (e.g. WD Purple or Seagate SkyHawk) in NVR systems. For microSD cards, choose high-endurance models (e.g. Samsung PRO Endurance) to prevent wear from constant overwriting.

Full disclosure: we built scOS to address exactly this—the frustration of cameras that depend on audio features like two-way communication. scOS uses permanently powered cameras connected via ethernet, eliminating the risk of audio failure due to intermittent power or network issues.

When to Consider Replacement

If your Hikvision camera is over 5 years old and audio issues persist despite troubleshooting, it may be time to consider replacement. Hikvision cameras typically last 5-8 years for wired models and 3-5 years for battery-powered models. Signs that replacement is needed include:

• Battery Degradation: Battery-powered models may struggle to hold a charge after 300-500 cycles.
• Sensor Degradation: Wired cameras may experience reduced performance due to sensor aging or firmware end-of-life (EOL) issues.
• NVR HDD Failure: Surveillance-rated HDDs in NVR systems may fail after 3-5 years, necessitating replacement.
• MicroSD Card Wear: MicroSD cards used for continuous recording may degrade after 1-2 years.

Under the UK Consumer Rights Act 2015, you have up to 6 years to claim faulty goods. If your camera is within this period and still under warranty, contact Hikvision support for a replacement or repair.