How to check TV aerial is working? Make sure your aired link is securely attached to the back of your TV or set-top box, and more to the divider’s attachment. By now, for the most part, you have to do what you need to do.
In situations where there is no sign, your aerial attachment may not be connected to the air at that time, or the link has been cut or damaged: you should look at the aerial and check if the link continues in the structure.