What you'll notice
A camera is down; moving its cable to a spare port brings it back.
Why it happens
Port electronics failed — often after a lightning surge travelled in on an outdoor run.
How we fix it
We confirm the port (not the cable or camera) is at fault, migrate to spare capacity, and fit surge protection on outdoor runs so the next strike does not take the whole switch.
Still not working?
If the checks above haven't restored your poe switch, this usually needs a technician. Our IP CCTV Systems service covers exactly this fault.