How to reseat the cable connection to your digital box
If you are experiencing a poor channel signal on your TV, or a channel that was previously available no longer is, you might be able to correct the issue by detaching and reattaching the coaxial cable connected to the back of your digital box.
Reseat the cable
Reseating adjusts how the coaxial cable is connected to the device and wall outlet. To reseat your cable connection:
Detach the power cable from your digital box.
Unscrew the coaxial cable connection from the back of the digital box.
Unscrew the coaxial cable from the cable wall outlet (or splitter).
Reattach the coaxial cable to the digital box and the cable wall outlet (or splitter), ensuring they are finger-tight.