How can I fix my onn microwave oven om004 ?

A couple of days ago i switched my onn om004 microwave on to warm up some food. The lights on the front came on & the timer counts down but the turnable does not spin nor does the fan come on and the food does not warm up. I have checked all fuses and they are ok. I have even replace the microwave short protector high voltage diode and it still does not work. Help me please.