Microwave Door Causing Circuit Breaker to Trip

My Microwave door is causing the circuit breaker to trip every time I open the door. I might of opened the microwave door during high heat instead of hitting the stop button first. I suspected there is a short at the door switch somewhere. Base on GE Model JE2160WF01, what part or parts should I order and tried replacing first. I don’t really want to spend too much money, are there after market substitute parts I can purchase and where. The microwave works fine as long as the door is closed. Please help…I appreciated.

Palam001