Just as a preface, I work in the audio-visual integration industry, so am familiar with signal flow and troubleshooting, etc.
I bought a 8-ch 720p NVR system with (2) POE indoor dome cameras/(2) POE outdoor cameras about 6-7 mos. ago. (ZM-SS76D9D4-SC-1TB)
The DVR stopped recognizing the outdoor cameras, although I can tell that they are getting power, because I can see the faint glow of the IR emmitters. They will not show at all, however, either on the DVR unit directly, or the app. The indoor dome cameras DO show, and the unit recognizes them.
I have already:
- Powered the unit on/off
- Updated the unit
- Switched ports on the back of the DVR (the dome cameras will show up on ANY port, but not the outdoor ones)
- Checked to see that it is connected via the router/switch and has net access.
- Tried the indoor dome cameras on the cable running to the outdoor cameras (and the dome cameras work, so I know it’s not the cable).
- Factory reset the DVR.
Any other ideas? It’s pretty frustrating.