How to Swap Ethernet (LAN) Cables to a Working NVR Port to Confirm Video Loss

Super Admin
20 Aug 2026
307 views
NVR8-8580, NVR8-8580RN, NVR8-8600RU, NVR8-8780, NVR8-8780RN, NVR16-8580, NVR16-8580RN, NVR16-8600RU, NVR16-8780, NVR16-8780RN, NVR8-ADVANX, NVR16-ADVANX, NVR-7450, NVR4-7072, NVR8-7072, NVR4-7082, NVR8-7082, NVR4-7085, NVR8-7085, NVR4-7285, NVR8-7285, NVR4-7300, NVR8-7300, NVR16-7300, NVR4-7400, NVR8-7400, NVR16-7400, NVR4-7000, NVR8-7090, NVR16-7090, NVR8-7095, NVR16-7095, NVR4-7200, NVR8-7200, NVR16-7200, NVR16-7250, NVR8-7500, NVR8-8000, NVR16-7500, NVR16-8000

If you are experiencing video loss with one of your NVR cameras, perform the following troubleshooting steps to identify if the NVR LAN port port (channel) is faulty.

video_loss_ethernet_to_cam_port.jpg

How to test

  1. As per image above, swap CH1 (port having Video Loss issue) and CH2 (known working port).
  2. Check the "Video Loss" error again.
    • If "Video Loss" remains on the same channel, then the LAN port of that channel (CH1) is faulty.
    • If "Video Loss" changes to the other channel (CH2), then it's possible that either the ethernet (LAN) cable or the camera is faulty.

TIP: If the above troubleshooting did fix the issue, proceed with the NVR Cameras swap to ethernet (LAN) cable to further isolate the Video Loss problem.

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