TV Repair Questions? Ask a TV Technician for Answers ASAP
Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Please unplug power to your satellite box, for a minimum of 5 minutes.
Replug, wait 5 more for it to start back up, and see how it works from there.
Please confirm where the box is connected on back of the tv (hdmi1, hdmi2, etc) and ensure that the panasonic is on the correct input mode to match. If that is set properly, then this leaves only the possibility of a hardware defect in the box, which would need to be replaced at that point.
Given the age of the tv, and the cost of a new box, you may be better off investing in a new tv which would not even require a box at this point.