Problem with IP POE system

[collectors]

Hi i have basically a cheap chinese system & was getting some problems with cameras intermittently going out. So, i did one upgrade with a new Hikvision NVD & still got the problem of cameras intermittently stop working. So i purchased a Hikvision camera & replaced one i thought was faulty. But still got the same problem. Then i notice on another faulty camera the IR light were not on at night time. Now we are in the middle of the county with no lights & i was just getting a black screen..
Just to through a spanner in the works, 90% of the time all works ok in the day time.
Is it possible my cheap poe switches could be faulty as there is 3 of them on the system. Any suggestion on fault finding would be appreciated,

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[Dan]

Hi @collectors

Can you please provide model numbers for your Hikvision NVR, cameras, and the cheap PoE switches?

 

[collectors]

Hi, Keeplink poe switch

& the dpv Hikvision DS-7616NXI-K2 12MP 4K AcuSense 16 CH

 

[Dan]

Thanks @collectors

What are the model numbers of the cameras you currently have connected to these PoE switches? Both the original cheap Chinese cameras and the single Hikvision camera.

 

[collectors]

Sannce camera

& Kiview

 

[Dan]

Thanks @collectors

Unfortunately, those product pages are not all that helpful as they don't have full specs stating the power usage of these camera models (this is very common with cheap cameras) but from the looks of them I wouldn't expect either of them to use more than standard PoE (15.4W) so they shouldn't be exceeding the 65W PoE budget of your switches.

How many cameras do you have connected to each switch?
Have you tried reducing it to just one camera on each switch to see if the cameras remain stable?

If the single camera is stable, you can try gradually adding more cameras to each switch to see when the cameras start dropping off.

 

[collectors]

Hi, going to have a go at your suggestions of unplugging all & introducing the cameras back in one by one. I am waiting for some emails to find out the load on each camera. I did find out the switches are 120 watt "Total" each. There are also TV's & laptops plugged into the switches, but i assume they provide there own power & rely on the switch for just data. I did also upgrade many of the cables to cat6 & didn't know if this might effect things as the cables seemed thin & more like a ribbon style cable. . ??