Quote:
Find out what device in your home uses a 50-55v power supply and see if a nail is going through that wire and your coax cables.
I had a problem with 120 volts! It was the idiot builders who ran a nail through the hot romex and the coax. We had to carve out many feet of drywall to trace the connection.
| Originally Posted by schleeb Hi, I'm new to the forums. I decided to look here to find a solution to my particular problem. I have a Panasonic HDTV that has a noisy picture. No big surpise, I'm sure. The problem is a snowy picture that only manifests itself on the lower channels like 2 thru 9 or so. The higher the channel number the better the picture. Once you get past 10 or so it's crystal clear. So I called the cable company to come and find the problem. When I first called they told me to check something... I was to pull the cable feed out of the wall and put my finger over the center conductor and the ground and plug it back in to see if the picture improved. By golly it was crystal clear... then it will slowly get noisy again over 10 or 15 minutes. They said they'd send someone out. He came out and did some checking and said I had 55 Volts AC on my cable line and that it was due to a bad house ground. He suggested I call the power company and have them check it. Well they sent out 5 people and two trucks and spent about 45 minutes checking everything and said there was no ground problem. They even regrounded the system. I told them what the cable guy said about the AC voltage on the cable center conductor and they said they couldn't find anything. So... Had the cable guy come back. He showed me that there was 50+ Volts when you connect on lead of the voltmeter to the cable coax center conductor while the other voltmeter lead is grounded to the house ground. He said it's a common problem especially in older houses. He said it was probably due to the internet cable modem being plugged into an outlet with a bad ground. Well... the cable modem only has a two prong plug to begin with so how would it even be grounded in the first place... I'm about ready to give up and get a dish since I can't get anyone to actually find/suggest a fix for the problem. Anyone have any ideas? |
I had a problem with 120 volts! It was the idiot builders who ran a nail through the hot romex and the coax. We had to carve out many feet of drywall to trace the connection.
