Advertisements I am trying to figure out what I can do to get certain channels working again. On Fox Sports North, The Olympic channel from NBC, NBC Sports, the CW, and my local PBS station all come up with an error V53. I have exchanged cable cards several times, restarted the box, had Comcast to come and look at it. When I have looked at the signal strength for the channels they are at 97-100%. Does anyone have any recommendations on what to do next?