I have an analog tv with a digital converter in the bedroom. A few days ago, suddenly the signal through the converter box from the antenna has gone crazy going from 60 to 0 to 40 etc. It jumps around constantly and the picture never can be seen. We checked the antenna on the roof, and all seemed fine as far as visible connections goes and this same issue is now also happening to the living room digital HD tv , which makes me wonder if something is going on with the antenna. Any ideas on what to try to correct this?