I am investigating a noise in the freezer of my refrigerator. Upon removing the panel at the inside back of my refrigerator I discovered a large amount of ice keeping the fan from turning. I removed the ice with a hair dryer, checked the fan for operation and reassembled the refrigerator. Things seemed to run well except the light for the control of the refrigerator goes out and the fan seem to not be operating. If I unplug the refrigerator from the outlet and plug it back in, everything seems to start working as normal. I am afraid that the defroster circuit might have a problem either with the heating element or with the refrigerator circuit board. Can you give me any idea as to what or where to check or test?
