My Dahua NVR is only showing a black video feed when I add camera to NVR. Is this a common problem you can point me in the right direction? These are new cameras I just ordered from Andy being added to a existing system. Search only yielded one similar problem I could find but no solution was posted. Typically I only use actual branded Dahua cameras instead of the generic unbranded ones and never had this problem in the past. Is there a different process for adding the generic cameras?
NVR: DH-NVR608-64-4KS2
Camera: IPC-5442TM-AS-3.6MM


NVR: DH-NVR608-64-4KS2
Camera: IPC-5442TM-AS-3.6MM

