Microwave lights up, timer works, not carousel or...

Question

Sharp SN R-510HKF M# 428742 Made in 2005, purchased in 2006The microwave inside light comes on when you punch in the time and power desired and hit start; but the carousel does not turn and there is no noise or cooking. My husband fiddled with the door latch and it did respond for a short moment; otherwise it has not worked; all the panel lights work all the time, timer, etc..