My Kenmore humidifier model #758.144071 is not working. I believe it to be the fan motor. There are two transformers on the fan motor. When I put ac to one of the transformers the fan works. When I put it to the other transformer the fan does not work. The ohm's reading across the one that works is 11 ohms. The ohm's reading across the other transformer is an open. I believe I need a new fan motor. How do I go about finding one?