Dahua NVR Troubleshoot All Series - NVR IPCAMERA SECURITY
FAQ Guide How To NVR Troubleshooting

Dahua NVR Troubleshoot All Series

Dahua NVR Troubleshoot All Series
Dahua NVR Troubleshoot All Series

Dahua NVR Troubleshoot All Series, Network Recorder (NVR) is a specialized computer that records security video surveillance footage in digital format to a hard drive. Because the NVR does not have video capture capability, video is typically processed and encoded from the surveillance IP or CCTV camera and transferred to the NVR for storage via or WiFi network. NVRs are typically employed within IP video surveillance systems.

Table of Contents

Disable audio recording on


This article is to show how to disable audio function in that connected to Dahua NVR.

Video Instruction

Step by Step Instruction

1. Login to Dahua recorder from local system interface.

2. Under Settings, click on Camera.

3. Go to Encode.

4. Select the camera channel.

5. Click on More.

6. Click on the toggle to turn off Audio. Click OK.

7. Click Save.

Dahua NVR Troubleshoot All Series

Read Also : Tuya Camera User Guide Ultimate Manual

Disable audio on Dahua that connected to Dahua NVR

This article is to show how to disable audio function in Dahua IP camera that connected to Dahua NVR.

Video Instruction

Step by Step Instruction

Step by Step Instructions

1. Login to Dahua NVR Web GUI using Internet Explorer.

2. Click on Settings > Camera.

NVR IPC Disable Audio 1.png

3. Click on Camera list (Some recorder will label it as Registration)

NVR IPC Disable Audio 2.png

4. Find the camera channel you want audio to be disable, click on E Internet Explorer icon.

NVR IPC Disable Audio 3.png

5. It will take you to the login page of Dahua IP Camera. Login with Camera credential.

6. Go to Settings > Camera > Audio. By default the Audio settings is enabled.

IPC Disable Audio.png

7. Click on the checkmark to uncheck on both main and substream.

IPC Disable Audio.png

8. Click Save.

IPC Disable Audio 3.png


No Audio from Live Feed

There are following possibilities:

 The system is does not have an amplification for power on the mic port.
 The mic needs to have its own power. Since the System does not supply phantom power to the mic you will need to make sure that the mic has its own power supply.
 Audio cable is damaged. You may need to re-run your cable.
 DVR/NVR's audio port is not working. Check the mic on another device to ensure that the mic is actually working.

1. Make sure your audio on the computer or television is enabled and working by playing music or watching a video with audio online. You should see this audio meter change when playing music or video on the computer/television.


2. Once you have confirmed your audio is working on your speaker, and if you still can't hear from your Live Feed, check your connections. If you are using an external microphone that plugs into the camera, please make sure you are supplying power to since the camera does not. See picture below:



 Also make sure your audio input is properly configured on the IP Camera. If you are using Audio In via a powered mic select line in on this screen, if you are using the microphone use Mic


3. If your connections and power are in order but you still cannot get audio from your live feed, log into your IP Camera or NVR and change the following settings.


4. If you are accessing your audio feed from a computer also make sure you have the speaker symbol enabled to enable audio from the Live Feed.



There is Audio from Live Feed, No Audio During Playback

There are following possibilities:

 It is possible that the audio for that channel was not enabled. Please enable audio function
 Usually there are a limited number of channels that can be accessed for audio recording. Should one of the cameras that you are wanting to be recorded with audio and it is connected later in the channels, you WILL need to disconnect every camera and connect that camera in the limited selection of channels.

1. Make Sure your camera with a microphone is working via live stream, please follow the NoAudio guide for details.

2. After ensuring you are receiving an audio feed, log onto your NVR and make sure your encoding setup is correct (Setup>Image>Encode>) and make sure your are on the right channel where the camera has a
working microphone. Now make sure audio is enabled for either or both the Main Stream and Sub Stream (whichever you are recording on)


3. Also make sure your camera is scheduled to record during specified operation.


4. Also make sure your camera is set to record


5. Now playback a recording of a camera that had picked up audio, you can also simulate this by making noise by the microphone and playing that segment back. Also make sure that the Volume button is not on mute and is turned all the way up during playback.


There is no HDMI output.

 If Display is not set in HDMI mode then set to HDMI.
 If The HDMI connection is not fully set in the connection then configure and reconnect HDMI.
 If The HDMI connector is damaged then change the HDMI Cable.
 If HDMI Cable is damaged then change HDMI Cable.
 If Check if is on the correct source setting then set to the correct source.
 If DVR / NVR is set to a that is unsupported by monitor then reset resolution.

Video Loss 1 Camera

There are following possibilities:

  is not compatible. You will need to upgrade to the latest version.
 Brightness is 0. Please restore factory default setup.
 There is no video input signal or it is too weak.
 You will need to check the network cable.
 DVR hardware malfunctions.

Video Loss on Multiple Cameras

There are following possibilities:

 Firmware may be old. Please upgrade to the latest version.
 Brightness is 0. Please restore factory default setup.
 If There is no video input signal or it is too weak, due to the length of cable, find shorter cable.
 Check privacy mask setup or your screen saver and remove them if possible.
 If DVR hardware malfunctions then change hardware.
 If Not enough bandwidth then check internet.
 If Insufficient power then check and change power supply.
 Check if you are using You are using aluminum braid or copper braid cable and change if not.

Camera Feed is Blurry or Distorted

There are following possibilities:

 It maybe that the camera is out of focus. The real*time video becomes black and white.
 If DVR and monitor resistance is not compatible then use a different monitor/DVR.
 If Video transmission is too long or degrading is too huge then shorten the distance.
 If DVR color or brightness setup is not correct then readjust setup or default.
 If Resolution or stream is on low then adjust resolution or stream.
 If Image sensor is bad then replace image sensor.
 Direct Sunlight can cause image sensor to go bad. So place image sensor out of direct sunlight.
 Try to avoid mounting camera on a metal surface. Electrical bleeding from a power source can cause image distortion.
 Indoor Camera being used as an outdoor camera which might not have an IR cut filter.

Video is distorted when searching local records.

There are following possibilities:


1. If Video quality setup is too low then reconfigure video quality setup.

2. If Program read error, bit data is too small. There is mosaic in the full screen. Please restart the DVR to solve this problem.

3. If HDD data ribbon error then replace ribbon.

4. If HDD malfunction then replace HDD.

5. If DVR hardware malfunctions then replace hardware.

Remote control does not work.

There are following possibilities:


1. If Remote control address is not correct then find the correct address.

2. If Distance is too far or control angle is too small then shorten the distance or fix control angle.

3. If Remote control battery power is low then replace battery power.

4. If Remote control is damaged or DVR front panel is damaged then replace remote control or DVR front panel.

System does not boot

 Disconnect, reconnect power and video cables to system.
 Disconnect HDD and boot system. If system boots without HDD, then HDD has failed or is not compatible.

There are following possibilities:

 If Input power is not correct then switch input power.
 If Power connection is not correct then switch power connection.
 If Power switch button is damaged then replace power switch.
 If Program upgrade is wrong then install correct program upgrade or send to RMA.
 If HDD malfunction or something wrong with HDD ribbon then replace HDD or Ribbon.
 If DB35.1, DB35.2SV35 or Maxtor 17*g has compatibility problem. Please upgrade to the latest version to solve this problem.
 If Front panel error then replace front panel.
 If Main board is damaged then replace main board.

NVR Randomly Rebooting or Shutting Down

Issue: NVR Randomly Rebooting or Shutting Down

 Disconnect HDD and boot NVR. If NVR boots without HDD, then HDD has failed or is not compatible.

There are following possibilities: Explanation:

1. If Input voltage is not stable or it is too low, then change the power supply and cable.

2. If HDD malfunction or something wrong with the ribbon, then replace the HDD or the ribbon.

3. Button power is not enough, then add more button power.

4. If Front video signal is not stable then check and adjust front video signal.

5. If Working environment is too harsh, too much dust then clean it.

6. If Hardware malfunction then replace hardware.

How to set the date and time

Time display is not correct.

There are following possibilities: Explanation:

 Setup is not correct
 Battery contact is not correct or voltage is too low.
 Crystal is broken.

Step by Step Instructions

1. Make sure the “Time Zone” is set correctly.



GMT stands for Greenwich Mean Time.

 Eastern Standard Time: GMT – 05:00
 Central Standard Time: GMT – 06:00
 Mountain Standard Time: GMT – 07:00
 Pacific Standard Time: GMT – 08:00
 Alaskan Standard Time: GMT – 09:00
 Hawaii-Aleutian Standard Time: GMT – 10:00

2. Setup DST, if applicable.

 Daylight Savings Time begins the 2nd week of March
 Daylight Savings Time ends the 1st week of November.


3. “Sync PC” if all else fails.


4. Click, “OK” to save your changes.


Burn error /USB back error.


1. If Burner and NVR are in the same data cable, then separate them.

2. If System uses too much CPU resources. Then please stop record first and then begin backup.

3. If Data amount exceeds backup device capacity which may result in burner error. Then please delete data.

4. If Backup device is not compatible, please change backup device.

5. If Backup device is damaged, please change backup device.

About the author


Hello, I live in Salih Turkey. I serve in dvr, nvr, security and surveillance industry. Write to me for any comments and suggestions ..

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