There is no picture from an analog camera after being transferred to another location, why?

Question

CCTV

hello everyone, in general, I don’t know badly how networks work, but I encountered analog cameras for the first time, they asked me to move the place where the DVR is, I just built up a twisted pair cable (about 40 meters, a twisted pair cable with a screen), but there is no signal from any of 4 cameras, there were baluns, I moved them to a new place along with the DVR, why is there no image?
transceiver (balun) should be on both sides?
but how then to connect it with a wire break, it is not possible to pull the entire cable, although their descriptions on the Internet, baluns should pull many tens of meters, and I have a total of a maximum of 60 meters,
what should I do?

Answer 1

The balun is even brand new))
The transceiver should be on 2 sides of the coil
4 cameras 1 twisted? I hope the screen is not used?
How is the food going? Shvvp separately? Check it out first