KENMORE OVEN C970-417757

Question

My oven will not heat anymore. 4 yrs old. Won't work on bake or broil. My control panel has power, I've reset the breaker, I checked the heating elements and they are fine. I though maybe it was a swtich because when I set my oven on bake and there is no clicking sounds. usually there is! Do you have any suggestions of what could be the problem or where i could find the switch , is it behind the control panel... how do i test the switch?