Hello.
My problem - NVR shows one (random or different) camera blanked out at all times on the monitor. All cameras show up just fine within the mobile app. All cameras are being recorded.
I can click on the blanked out camera from quad screen view to make that camera full screen and the camera shot/picture is fine. When I go back to quad screen another camera is now blanked out. Example - quad screen shows cameras 1,2 and 4. Cam 3 is blanked out as if a camera is not installed. Make camera 3 full screen and it comes in just fine. Go back to quad screen and now camera 4 is blank/blacked out. I can continue this cycle all the way around the four cameras.
NV1104E
4 cameras - IP67