Using a Balun

shaids

Young grasshopper
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Hello,

I am facing an issue at t a clients. They previously installed Analog cameras using balun (pic attached) on cat6 cables over 5 years now and it was working well. Recently, they have been having issues with lines on the camera's streams and some turned off. They have 52 cameras in total. They did a messy job because with all these baluns in the rack and wires tangled together which I am trying to arrange.

When I came in I thought that the baluns are old so I decided to change all 52 pcs with new ones and start connecting everything back in order.

While trying to connect things together, the cameras still have lines and flickers. If I connect 2 cameras in the DVR they both stop showing. They give that black/white screen image you get in a normal tv. If I remove and leave just 1 camera then it works but still with lines. I changed the earthing in the rack and no issues there.

I checked all the cat6 cables and they are good. Changed power supplies and without use.

Anyone came across these issues and what did you do? I need a solution, please.

Thanks in advance.
 

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