Before I permanently cancelled cable TV in 2009 I remember the TV remote had instructions printed on the back for first line troubleshooting. It said make sure

Before I permanently cancelled cable TV in 2009 I remember the TV remote had instructions printed on the back for first line troubleshooting. It said make sure your TV and the cable box have power cables plugged in, and that the TV is set to the right input. That was probably their #1 phone call.