The 3 most common part(s) or condition(s) which cause the symptom Refrigerator light not working are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 937233
If the refrigerator light is not working and a new light bulb doesn't solve the problem the door switch may be defective.
RepairClinic Item # 917528
If the refrigerator light is not working the door switch might be defective. The switch can be checked for continuity with an Ohm meter. If it doesn’t have continuity it should be replaced.
RepairClinic Item # 1056608
If the refrigerator light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.