IP camera network connection problems

[mack100]

I have 5 IP cameras connected to my LAN via 2 POE switches and recording is done on a 7608 NVR.
2 weeks ago we had something of a storm and 1 camera stopped working. I disconnected it, gave the RJ45 connection a clean with electronic solvent cleaner and it connects OK directly to the NVR which assigns it it's own internal IP address. The image is seen in IVMS-4200 and in web browser.
The problem starts when I connect the camera back to a POE switch. Nothing happens, no IR light that would normally come on for a minute or so, no evidence of network traffic either.
Not surprisingly SADP doesn't see the camera. The vendor is baffled and is seeking help from Hikvision so I won't hold my breath waiting for a reply there.

I'd be grateful if anyone here might know what the problem is.

 

[pghcamman]

You connect it to nvr and you can view so nvr and camera are fine, Did you try connecting to a different port on the switch? not all ports on a switch are POE are you definitely connected to a POE port?

 

[mack100]

You connect it to nvr and you can view so nvr and camera are fine, Did you try connecting to a different port on the switch? not all ports on a switch are POE are you definitely connected to a POE port?

I've tried connecting to ports that previously had traffic and I've also used a variety of cables to no effect.

 

[David Docherty]

Faulty POE switch ,probably zapped in the storm

 

[weiny]

Possible the network-cable had voltage attenuation in the storm.Try to replace a new network cable?

 

[fenderman]

Possible the network-cable had voltage attenuation in the storm.Try to replace a new network cable?

Sorry but that is simply not possible. Its it works plugged into the nvr there is a defect in the poe switch...

 

[weiny]

Sorry but that is simply not possible. Its it works plugged into the nvr there is a defect in the poe switch...

Oh oh, Are you use the same cable whether plugged into the nvr or in the poe switch?
I selling hikvision over 2 years, but sorry I have no any idea about this question.

 

[fenderman]

Oh oh, Are you use the same cable whether plugged into the nvr or in the poe switch?
I selling hikvision over 2 years, but sorry I have no any idea about this question.

Im not the original poster..read the post.

 

[mack100]

Sorry but that is simply not possible. Its it works plugged into the nvr there is a defect in the poe switch...

I've plugged the camera into 2 different POE switches.

 

[fenderman]

I've plugged the camera into 2 different POE switches.

If its not working with a second poe switch and you confirmed the switch will power other cameras, then one possibility is that hikvision nvr's use mode B POE, which supplies power over different pins than mode a (which is more common)..I have never tested it so dont know..An iffy connection may still transmit data but cause issues with power...recheck your new connections...

 

[mack100]

If its not working with a second poe switch and you confirmed the switch will power other cameras, then one possibility is that hikvision nvr's use mode B POE, which supplies power over different pins than mode a (which is more common)..I have never tested it so dont know..An iffy connection may still transmit data but cause issues with power...recheck your new connections...

OK I'll do that, thanks.