My zephyr typhoon stopped working. Neither light not the fan come up. I am sure there is power going into the unit. I turned on the light one day , the light cam on and suddenly went away. From then even the fan stopped working. any information on what happened is appreciated. Thanks first light went out when I pressed the light button, it was on then suddenly went out. Fan were working. This week, the second light went out when I pressed the light button, it was on then went ou. later on, when I tried to turn on the fan and discovered it was not working. Check circuit breaker, it is ok. How can I determine if the fan is out of order or something else. thanks

Kitchen Ranges - Zephyr - Typhoon AK2100 Kitchen Hood