Sharps microwave

Question

i have a sharps microwave model r-520 JKF when you put the time to cook in the time part is work but the microwave is doing anything inside

My Sharp is a R 520 L and everything on it works except: the turntable does not move, and it does not cook. Also, I cannot not hear the fan. Light, timers, clock functions, etc all work. Could this be the door switch? Or is ti time for a new one? Thanks