The night before thanksgiving my oven won't ignite. Burners work. I have seen several posts but no definitive answer that I could find with limited time. Neither broiler or bake start. When I set oven to bake I get 2 clicks and nothing happens. With broiler I get no clicks and nothing happens. Yesterday the oven made a strange fairly loud vibrating / grinding type of noise. Where do I need to start to diagnose this problem. Is there any way to manually start bake function?