I have the AMDV10814-4B-B-HDD - which is a DVR unit and 4 cameras. One night a couple of weeks ago - all 4 cameras went black at the same time. The timestamp and camera name still appears, but the feed is black.
Doesn't appear the cameras are getting any power because you cannot see the red IR at night. I have tried power cycling everything several times.
The DVR unit appears to be working fine. Is this likely a power supply failure?
I've only had the system for about 4 months - purchased it on December 28, 2017.