Troubleshoot/NVR/Video Loss All Cameras

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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.
There is no video input signal or it is too weak, due to the length of cable.
Check privacy mask setup or your screen saver.
DVR hardware malfunctions.
Not enough bandwidth.
Insufficient power
Check if you are using You are using aluminum braid or copper braid cable.

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