You may have to chase down all the splitters that the signal goes through. Both the coax connectors, and splitters maybe the source of the problem. Some have found bad connectors and others found output and input swapped on the splitters. You can get a barrel connector, get one from a TV cable wall plate at the hardware store, and attached the coax from the antenna directly to the bedroom TV to see if it is good. Another trouble shooting item I used is a 75 ohm terminator. Connect it on one end and measure 75 ohms on the other. If it is open, then the cable is bad or the wrong cable. If it is short, the cable is bad, but most of the time it is a shield wire touching the center conductor in one of the connectors. With the 75 ohm terminator you can make sure which cable is the one going to your TV from the amplifier. Since the LED indicator turns on, you are getting power to the amplifier. In my old class C, I did have an amplifier go bad, but they are usually long lasting. I do remember one post that had a nail going through the coax.