Common CCTV Problems and How to Fix Them – Expert Guide by Moffam Electricals

Introduction – Reliable CCTV Systems Start with Professional Installation

Closed-Circuit Television (CCTV) systems have become essential for homes, offices, and commercial spaces in Kenya. They provide 24/7 security monitoring and act as a strong deterrent against theft, vandalism, and other crimes.

However, even the best CCTV systems can develop faults over time. Poor installation, environmental conditions, power issues, or faulty components can all affect performance. At Moffam Electricals, we not only supply and install high-quality CCTV cameras in Nairobi and across Kenya, but we also provide fast, reliable CCTV repair and maintenance services to keep your system working perfectly.

In this guide, our experts share the most common CCTV problems, their causes, and practical troubleshooting tips. Whether you are a business owner protecting your premises or a homeowner safeguarding your family, this article will help you understand what’s wrong – and when to call us for professional assistance.

1. Choppy or Flickering CCTV Video

Problem: The video feed looks jerky, freezes, or shows tearing.
Likely Cause: Poor network connection, low bandwidth, damaged cables, or interference.

How to Fix:

• Ensure your network speed meets the camera’s requirements (e.g., 8 Mbps per 4MP camera with H.264 encoding).

• For wireless cameras, check Wi-Fi signal strength and reduce interference from other devices.

• For wired cameras, inspect cables for damage and ensure they are not run near high-voltage lines.

• Check your Network Video Recorder (NVR) or Digital Video Recorder (DVR) to ensure it can handle the decoding load.

2. CCTV Not Working on Mobile

Problem: You can view footage locally but not through your mobile app.
Likely Cause: Network configuration errors, firewall restrictions, or VPN/DDNS setup issues.

How to Fix:

• Confirm that your camera/DVR is connected to the local network and properly configured.

• Check firewall settings and ensure cloud-based access isn’t blocked.

• If using VPN or Dynamic DNS (DDNS), verify correct setup.

3. DVR Not Recording Footage

Problem: Live view works, but recordings are missing.
Likely Cause: Disabled recording settings, full storage, or faulty hard drive.

How to Fix:

• Check that recording is enabled in settings.

• Ensure your DVR has enough storage; delete old footage if needed.

• Test the hard drive for faults and replace if necessary.

• If recordings are stored in the cloud, check internet connectivity.

4. Poor Night Vision Quality

Problem: Blurry, overexposed, or completely white images at night.
Likely Cause: Incorrect camera positioning, IR reflection, or strong light sources.

How to Fix:

• Avoid pointing cameras directly at headlights or bright lights.

• Check for reflections from nearby glass surfaces.

• Ensure the lens visor is correctly positioned.

5. CCTV Not Working at Night

Problem: The camera works during the day but shows a black image at night.
Likely Cause: Faulty IR LEDs, insufficient power, or incorrect night mode settings.

How to Fix:

• Enable night mode in settings.

• Ensure the power supply meets the camera’s requirements.

• Inspect IR LEDs for damage.

6. Black Screen on CCTV

Problem: No image at all.
Likely Cause: Power loss, blocked lens, or connection issues.

How to Fix:

• Verify that the camera has power.

• Check all connectors, fuses, and PoE switches.

• Inspect the lens for obstructions or damage.

• Restart the DVR/NVR.

7. No Video Signal

Problem: The system shows “No Signal” instead of live video.
Likely Cause: Power failure, damaged cables, or incorrect network settings.

How to Fix:

• Check power supply and cables.

• Inspect network settings for IP conflicts.

• Use a CCTV test monitor to verify camera output.

8. Noisy or Grainy CCTV Footage

Problem: Static-like interference in the video.
Likely Cause: Electrical interference or damaged shielding.

How to Fix:

• Keep CCTV cables away from high-voltage lines.

• Replace damaged cables and connectors.

• Check for faulty equipment that may be emitting interference.

9. Horizontal Lines on Footage

Problem: Lines moving across the screen.
Likely Cause: Power interference or lighting issues.

How to Fix:

• Avoid pointing cameras directly at fluorescent or high-frequency lighting.

• Use proper cable grounding.

• Upgrade to cameras with Wide Dynamic Range (WDR) if lighting is unavoidable.

10. CCTV Flickering

Problem: The image brightness fluctuates.
Likely Cause: Power fluctuations, interference, or IR adjustment issues.

How to Fix:

• Test with another monitor to rule out display issues.

• Ensure the power source is stable.

• Adjust the camera angle to avoid light interference at night.

11. Black-and-White Images from a Color Camera

Problem: Color is missing from the video.
Likely Cause: Low light, incorrect video input type, or IR mode activation.

How to Fix:

• Improve ambient lighting.

• Match video output (composite/component) with the display input.

• Use a test monitor to verify camera color output.

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Why Choose Moffam Electricals for CCTV Repair in Nairobi

While some minor CCTV issues can be resolved with DIY troubleshooting, many require professional expertise to prevent further damage. At Moffam Electricals, we provide:

• Expert CCTV installation and repair in Nairobi and across Kenya

• Fast diagnosis and solutions for all camera brands

• Affordable maintenance contracts to keep your system running

• Upgrades to modern, high-resolution security systems

Frequently Asked Questions (FAQ) – CCTV Troubleshooting & Repair by Moffam Electricals

1. Why is my CCTV camera not showing video?
Your CCTV may not show video due to power loss, damaged cables, incorrect network settings, or a faulty camera. Check the power supply, connections, and DVR/NVR settings. If the problem persists, contact Moffam Electricals for a full inspection.

2. Why is my CCTV camera blurry at night?
Blurry night vision can be caused by IR light reflection, dirty lenses, or incorrect camera positioning. Clean the lens, adjust the angle, and ensure the camera isn’t facing bright light sources.

3. Why is my CCTV not working on my phone?
This usually happens due to incorrect network or app settings. Make sure your camera or DVR is online, the mobile app is configured correctly, and your firewall or VPN settings aren’t blocking access.

4. How can I fix CCTV flickering?
CCTV flickering may result from poor power supply, interference, or IR adjustment issues. Check cables, grounding, and ensure your power source meets the camera’s requirements.

5. Do CCTV cameras need maintenance?
Yes. Dust, weather changes, and power fluctuations can affect camera performance. Moffam Electricals offers affordable CCTV maintenance services in Nairobi and across Kenya to keep your system running 24/7.

6. Can Moffam Electricals repair any CCTV brand?
Yes. Our technicians are trained to work with all major CCTV brands and models, ensuring quick and reliable repairs.

Call Moffam Electricals today at 0790 384 109 for professional CCTV repair, installation, and maintenance services in Kenya.

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