Why Does My Security Camera Say No Signal? Quick Fix!

You are at home, your security camera is set up to watch for intruders. But when it turns on with a “no signal” message, you feel like the whole day’s gone down the drain and you might as well leave now. Your security camera is not picking up any signals causing video loss and you’re wondering why.

Security Camera not picking up signals? What do I do if my security camera says no signal?

A “No Signal” warning sign is displayed on the camera monitor when something interrupts a CCTV system‘s video signal.

There are a number of reasons why your security camera might say no signal. One reason is that the camera may have lost its video feed. This could be due to a loose connection, the camera going black at night, or getting no video with the surveillance camera showing a black screen.

There are a lot of potential issues that can surface in the operation of your security camera system. Security cameras can suffer from video loss due to hardware failure, software issues, and tampering. By being aware of these potential problems and taking steps to prevent them, you can help ensure that your security camera system functions smoothly and provides the protection you need.

Video loss on security cameras can be quite frustrating, but there are several things you can do to minimize the chances of it happening. Keep your equipment up-to-date and in good condition, keep an eye on your footage for any signs of tampering or compromise, and always keep a backup copy of your footage just in case something goes wrong. If you do experience video loss, contact your camera provider right away for help restoring the missing footage from the archives.

Why Does My Security Camera Say No Signal?

Why Does My Security Camera Say No Signal?

A No Video Signal problem can be caused by a cut or bend in system cables, especially HDMI or VGA cables connected between your Video Recorder Device and cameras. A No Video Signal issue can also be caused by faulty power wires, damage in the power adapter of cameras, or any equipment in the security system.

In case you have a wireless or wire-free camera connected to your home network router, any signal loss or interference from other devices in the network will cause a No Video Signal problem. The software of your surveillance system (such as IP address conflicts, Mac addresses, or wrong port forwarding rules) can also cause No Video Signal issues

Reasons Why A Home CCTV Camera Monitor Shows “No Signal” or Video Loss

1. Poor Design Or Installation

Poor design or installation of CCTV system can cause it to lose video signal. There are many possible causes, and one must troubleshoot each to find the reason why the system has lost its video signal. Design or installation can be poorly done, with power problems, wiring problems, an unstable network, malfunctioning hardware, IP address conflicts, and outdated firmware being some common causes.

2. Power Problems

CCTV cameras can suffer from video loss or signal loss due to power problems. There are several reasons for power problems, including twisted or bent cables, faulty connections, and using low-quality extension cords. To avoid losing video footage or experiencing signal loss, try double-checking all power connections and switches, as well as making sure the DVR/NVR port is providing enough power to the cameras.

Make sure the battery is not dead or charged via a power adapter or solar panel. Make sure the battery is not dead or blocked.

3. Wiring Problems

Wiring problems can be easy to spot and usually result from shoddy installation. Analog CCTV cameras are at a greater risk of video loss or signal loss than PoE cameras. Cables and wires can become twisted or bent. If cables are not tight, they can lose video signal

4. Unstable Network Can cause Video Loss or A “No Signal” Sign

An unstable Wifi network is the most common reason why a security camera says “no signal”. If you have an old router that doesn’t support WPA2 encryption, it may be causing your wireless network to not work properly. Causes of a loss of signal include insufficient power, wiring mishaps, an unstable network, and old firmware. To identify and fix the problem that is disrupting your signal, you need to know what to look for.

5. Malfunctioning CCTV Hardware

Bad hardware can cause the video output of a security camera to be blank or it can say there is no signal. It’s important to test your system before you install it into your home so that you don’t run into this problem after you have it installed. In addition to testing your hardware before installing, there are other tips that can help you avoid this issue in the future.

6. IP Address Conflict can cause Video loss

If two IP cameras are on the same network and have the same IP, then they will kick out each other from the network, causing video loss on your system. This is not related to a power supply issue, it’s a network issue. Each device on the network must have a unique IP address.

If you can’t solve video loss on security cameras even after checking the power supply and network connection, it is possible that there are IP address conflicts that stop you from viewing the security cameras.

7. Outdated Firmware Can Also Prevent A Good Signal and Cause Video loss

Outdated firmware is a bigger problem than most homeowners are aware of. Firmware protects your CCTV system, prevents a poor signal, and usually offers great new features. When you get that dreaded signal, there is, unfortunately, no single cause nor a cure. One must troubleshoot each possible cause to find the reason why your CCTV system has lost its video signal.

Also Read:

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  5. How Do Wireless Security Cameras Get Power? 
  6. Why do you need an SD Card for a Security Camera?

How to fix Video loss on security camera systems

1. Fix inadequate power supply

Video loss is caused by an inadequate power supply. Try using shorter coaxial cables or Ethernet cables to power up the CCTV security cameras. Use solar panel if possible.

Reasons Why A Home CCTV Camera Monitor Shows "No Signal" or Video Loss

2. Check for Bad cables or wires

CCTV security cameras can experience video loss if the cabling is done poorly. Networks, power supply, and hardware can also cause video loss on CCTV security cameras. To fix cable-related issues on security cameras, make sure there are no bent wires or twisted cables, that connections are tight, and that the cameras are tested before being used in operation.

3. Check for Low bandwidth or weak internet signal

Video Loss is caused by Low bandwidth or Weak internet signal. Too many IP cameras on the network can cause video loss issues. Insufficient bandwidth on PoE switch or NVR can also cause video loss issues. To fix video loss, first check the specs of your router and settings, as well as the Wi-Fi router. Make sure your PoE switch is able to support all the traffic coming from the cameras.

4. Fix the Faulty IR Night Vision block

A faulty IR night vision block can turn on the camera’s LED but not allow the camera to see at night, resulting in the black video. To fix a faulty IR night vision block, access the settings and check if the LEDs are turning on.

There are various reasons for video loss, including a defective IR sensor, not turning on the IR camera and incorrect settings on your NVR/DVR. To fix video loss, you can try adjusting your NVR/DVR settings or using external illuminators or floodlights.

How to fix Video loss on security camera systems

5. Fix Signal compatibility issues

Check the specs and manuals to make sure security cameras are compatible. Make sure the recorder supports the type of camera you’re trying to hook up. Research before making a purchase.

6. Fix IP address conflicts

IP address conflicts can cause video loss on security cameras. To avoid video loss, scan for and fix IP address conflicts. Make sure the gateway is set correctly before assigning cameras to an IP address.

7. Check for Power Surge

Video loss is caused by a power surge. To protect your security camera system, use power surge protectors or lightning surge protectors. Deploy UPS in your CCTV security system design to ensure that the cameras will work even if there’s a power outage in the area.

8. Fix Hardware and firmware issues

Video loss is caused by hardware and firmware issues. To fix video loss, update your devices with the latest firmware, or replace the security system. When purchasing a new security system, research to avoid common issues.

9. Fix A dead camera

Video loss is caused by a dead camera. Check your cabling to make sure there are no badly bent cables or somehow twisted. Make sure the connections are tight and well plugged in. Test out the cameras by using a patch cable, just see if you get a picture on the screen. Maybe the wire is okay, but the camera itself is dead

How to Avoid Video Loss on Security Cameras and CCTV Cameras

1. Check All Possible Connection Regularly

Check all possible connections regularly to avoid loss of video. Possible reasons for the loss of video include loose connections, black screens, and the camera not working.

2. Use Original and Shorter Cables

Use original and shorter cables when powering CCTV security cameras. Make sure connections are tight and well plugged in. Use cables manufactured by well-known companies

3. Use Power Surge Protector and UPS

Use a power surge protector to protect your equipment. Use a UPS unit to protect your equipment from power outages. Use power surge protectors or lightning surge protectors to protect your CCTV security system from lightning. Deploy UPS (Uninterruptible Power Supplies) in your CCTV security system design to ensure that the security cameras will work even if there’s a power outage in the area. Don’t mount the camera on a metallic surface, or if you have to do it, put a wooden block in between to make the setup non-conductive.

4. Choose Reliable Cameras System Brands

Choose reliable camera system brands to avoid compatibility issues. Try buying security cameras and DVR/NVR from the same manufacturers to avoid problems. Compare the features and prices of different camera systems to find the best one for your needs. Make sure to have a backup camera system in case your primary one fails.

Check out this helpful video:


Why Does Camera Video Loss Happen?

Camera video loss can be caused by network issues, hardware failures, decoding errors, power supply problems, wiring problems, defective hardware, bugs in camera software, and IP address conflicts. To prevent camera video loss, use reliable security cameras and systems that have been tested and certified to work properly. Quick fixes for reducing the effect of camera video loss include repairing or replacing faulty equipment, updating software, and adjusting settings on security cameras.

What causes no video on CCTV?

The loss of video on CCTV cameras or the DVR/NVR can be caused by various factors, including power supply failure, wiring faults, network instability, hardware issues with cameras, monitors or NVR/DVR, camera software problems, and IP conflicts. Proper troubleshooting is essential to identify and resolve these issues.




I am a Mechanical Engineer with years of experience working in the Security Industry. Aside from giving out useful information here, my hobbies include researching, listening to classical songs. In my spare time, I learn python programming language.