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There is no video input signal or the signal is too weak.
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The hardware of the DVR is damaged.
real-time image problems such as serious distortion of the image
color or the brightness, etc.
Possible reasons:
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The DVR does not match with the impedance of the monitor.
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The video transmission distance is too far or the attenuation of video
transmission cable is too big.
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The setting of color and brightness for the DVR is wrong.
cannot find video files in local playback.
Possible reasons:
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Something is wrong with the data cable or the jumper of the hard disk
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The hard disk is damaged or no video data.
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Record function has been disabled. Please click Record icon under Setup
to enable it.
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The video files you want to see have been overwritten after a recent disk
format.
Blurred screen when viewing the local video.
Possible reasons:
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The video quality is set too low.
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The program data reads wrongly, always become normal after rebooting
up the DVR.
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Something is wrong with the data cable or the jumper of the hard disk
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The hard disk is damaged.
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The hardware of the DVR is damaged.
no audio signal in the surveillance window.
Possible reasons:
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Audio has not been set up as ‘Auto’. Refer System menu - Audio.
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The audio cable is damaged.
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The hardware of the DVR is damaged
there is audio signal in the surveillance window but no audio
signal when playback
Possible reasons:
