What to do if all cameras display no image on the DVR monitor

This how-to tutorial is suitable for SANNCE security system：DE81N：https://www.amazon.com/SANNCE-Securit...
DE41N：https://www.amazon.com/SANNCE-Securit...
DH81NK：https://www.amazon.com/Security-Surve...

Video transcription:

If you can see the system panel setting interface as shown in the picture, but no channel displays image on the monitor, please try the following steps.

First of all, please ensure everything is connected properly on your device.

Take one of the channels as an example here. Please ensure your device’s BNC connector is connected properly and it is not loose.

Please be sure to use the standard power supply included in the kit for power supply.

Cover the front of the camera with your hands. If you see the IR light on, it indicates that the camera is turned on normally.

If the IR light is not on after you cover the front of the camera with your hands, please replace the camera’s power supply.

If you have replaced the camera’s power supply, but it still doesn’t work, please try using a single power cable instead of a 1-to-4 splitter cable to power the camera.

When everything is ready, the IR light will be on after the camera is powered up.

Click [Main Menu]-[System]-[General]-[Video Standard] to check if your video standard is selected correctly.

Click [Main Menu]-[Advanced]-[Restore] to enter the factory reset interface.

Select all and click [OK].

Click [Main Menu]-[System]-[Digital]-[Channel Type].

Make sure your device channel type is selected correctly (the first option is ticked by default).

Click [TVI&AHD] to confirm the HD type.

Try all options to choose AHD, TVI, CVI and Auto.(Note: The DVR’s model information can be found on the bottom label and the camera’s can be found on its label.)