Our Panasonic tv is about 8 years old and will cut

The first thing you can do is try plugging it somewhere else. Sometimes its the wall outlet. Unplug it and check to see if the plugs don't wiggle. Sometimes the metal plate on the plugs has broken loose. While it is plugged in move the cord to see if it does it. When all that don't determine the problem. You can open the TV, and check for loose connection, and cracked solder joints. Look aroun the flyback area because thats where most cracks develop because of its weight. I really don't recommend opening the TV because you could make the problem worse if you are not carefull. Also the tube can have lethal charge even if not plugged in, and some TV this charged remain for up to three days. Good luck.