Applies to: DH81NK/DH41NK/DM21O/DM31O/DL81A/DH81S/DH81NG/DN81NB/DM41G/DN41CJ/DN81BJ/DN61EC/DG81W/DG61X/DG41T/DT81DQ/DT41DC/DT61ER
If you find your DVR cannot show any camera‘s image on monitor or TV and in the middle of the screen it shows No config or offline, please try the method below to fix it.
Please login system and go to the main menu---system---digital---channel type and select the first option on the list. Finally, click OK to save your setting. The system will reboot. After rebooting, you can see the camera‘s image.
Please remember don‘t go to main--system--digital--channel type to change any setting if the problem is solved.
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