Microwave is a Panasonic 2.2 Cubic foot 1300 watt Model number NN-S952WF unit that is about 8 years old. The unit runs for about 4 to 5 seconds then shuts off. I have taken the back casing off to inspect and fount a copper coil style relay cycling on and off. After it cycles the third time, it shuts the unit off. It has power and runs for 4 seconds, so I need to know if the problem is in my board that has that copper coil style relay or if it could be something else.