[John Candle]

Well Ok , however for the 9 volt battery and the multimeter not to work the coax would have to be extremely long. There is no way that house wiring can be that long. I say that something is still wrong. A bad connection , a damaged coax cable. Like a kink in the coax , this happens when the coax is coiled in a loop and then the loop is pulled tight making a kink. . Or the coax has been pulled to the point the foil shied and shied wires were broken. . Or there is a non power passing splitter is connected , a non power passing splitter will not pass the 9 volts. . Read This---->The internet coax and the antenna coax can not be the same coax.<----Read This