Microwave ovens are a common household appliance, but they can experience a variety of issues, including not heating properly, sparking, or failing to turn on. Common causes of these problems include a faulty magnetron, damaged door seals, or malfunctioning turntables. If your microwave oven is not working correctly, it’s important to get it repaired by a professional to avoid potential electrical hazards. Regular cleaning and maintenance can help prolong the lifespan of your microwave, such as wiping down the interior and checking the door for proper sealing.