Why one of the TVs connected to cable TV does not work

The apartment has two TVs with cable, one is working and the other is not - just a black screen. Wires all the rules, what to do and what could be the reason?

Alexander.

Specialist's answer

In this case, you can use the exception method.

That TV on which there is no image, connect to the place of work. If after that it starts to show normally, then the problem is in the cable or junction box. If the TV is faulty, it will not show anything in a new place. In the first case, cable TV mechanics are needed, in the second, the mechanics of the center for the repair of household appliances.