There is most likely, a diode in line before the transformer. Also, check the switch and thermostat. To see if the thermostat works, connect an ohm meter to it, warm it up with a hair dryer, and than cool it down with a bag of ice or some canned air.
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There is most likely, a diode in line before the transformer. Also, check the switch and thermostat. To see if the thermostat works, connect an ohm meter to it, warm it up with a hair dryer, and than cool it down with a bag of ice or some canned air.