Why do a see " No Video Signal " in the mornings when I turn on the TV? Why must I restart the system using Xfinity to get the TV working again?
Start by re-seating ALL coax connections, including any you may have in the attice (like I do).
Make sure they are tight.
What make/model TV do you have? What model TV box do you have? How is your TV connected to your TV box, HDMI or COAX?