Thank you for the help. I got it working. The wire in the cable line was not pushed in far enough to get a signal. I pushed it into the end and it gave me back my signal. It did work and quit working all of a sudden.
I did get it working. The wire was not pushed in far enough to get a signal when I screwed it into the back of the black box. We checked everything and that was my last resort before calling Comcast. I just pushed the cable wire into the end where it screws into the box. I have no idea how it got pulled back so there was no contact. ???