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Below are a few possible reasons why this may be occurring:
•
The input voltage is too low or is not stable.
•
There is an HDD malfunction, or something is wrong with the HDD cable.
•
The power button is damaged or malfunctioning.
•
Video output signal is not stable.
•
The insides of the DVR have accumulated too much dust.
•
The temperature is either too hot or too cold.
•
The hardware is malfunctioning.
3.
The system does not detect a hard drive.
Below are a few possible reasons why this may be occurring:
The hard drive is broken.
•
The hard drive cable is damaged.
•
The hard drive cable connection is loose.
•
The DVR's main motherboard SATA port is broken.
4. There is no video output on any of the channels.
Below are a few possible reasons why this may be occurring:
•
The DVR firmware is incompatible with the attached cameras. Upgrade to the latest firmware.
•
The image brightness is set to 0. Change the brightness using the image settings or restore the DVR to factory
default settings.
•
There is no video input signal, or the signal is too weak.
•
A privacy mask or screensaver may be enabled.
•
There might be a malfunction with the DVR hardware.
5. Real-time video color is distorted.
Below are a few possible reasons why this may be occurring:
•
When using a BNC output, NTSC and PAL may be setup incorrectly. The real-time video may become black and
white.
•
The DVR is not compatible with the monitor.
•
The video transmission cable is too long, or signal degradation is too great.
•
The DVR's color or brightness settings are not correctly configured.
6. Local Recordings are not searchable.
Below are a few possible reasons why this may be occurring:
•
The hard drive cable is damaged.
•
The hard drive is broken.
•
The DVR's firmware is incompatible with the recorded video.
•
The recorded files have been overwritten.
•
The recording function has been disabled.
7. Local playback video is distorted.