If you are unable to see an image from your DVR or NVR when plugged into a TV it is most likely to be a compatibility problem.
The DVRs and NVRs come out of the factory preset to a quite low resolution 1280 x 1024 pixel resolution that some modern TV’s cannot display, it is too low for them.
Note: We have requested the manufacturers set them to 720P
The way to get it working is to temporarily plug the DVR/NVR into a PC computer monitor and change the display resolution to a more suitable setting then it can be plugged into your TV and it will work fine.
Computer monitors can display lower resolutions and usually have a 15 pin VGA cable, you can leave both VGA and HDMI connected at once.
The best setting is one that exactly matches your TVs resolution, in many cases this will be 1920×1080 (1080p), or if the TV is older 1280 x 720 (720P) will work.
To change the display setting go to the MAIN MENU and select DISPLAY – OUTPUT, the VGA/HDMI Resolution option allows you to choose the best option, click save when completed and the DVR/NVR will reboot.
IMPORTANT: When the DVR/NVR reboots you have 5 seconds to click OK on the message or it will revert back to the previous setting and you will have to re-do the changes. If the resolution you set is not compatible simply wait and the DVR/NVR will reset itself and reboot.