There are a few signs that can indicate if your microwave's turntable is broken or malfunctioning. Here are some things to check:
Lack of rotation: The most obvious sign is when the turntable fails to rotate when the microwave is in operation. Place a microwave-safe dish on the turntable, start the microwave, and observe whether the turntable spins or remains stationary.
Unusual noises: If you hear strange grinding, scraping, or rattling sounds coming from your microwave during operation, it could be an indication of a broken turntable mechanism. These noises may occur if the turntable is misaligned or if the motor that drives the rotation is faulty.
Uneven heating: The turntable's purpose is to ensure even heating of food by allowing it to rotate continuously. If you notice that certain parts of your food are overcooked while others are undercooked or cold, it could be a sign that the turntable is not functioning correctly.
Stuck or jerky rotation: If the turntable appears to be moving in a jerky or irregular manner, or if it gets stuck during rotation, it may be due to a mechanical issue. This can prevent the turntable from rotating smoothly or cause it to stop entirely.
Physical damage: Inspect the turntable for any visible signs of damage, such as cracks, chips, or warping. If the turntable is broken or warped, it may not rotate properly or could get stuck during operation.
If you observe any of these signs or suspect an issue with your microwave's turntable, it's best to consult the manufacturer's instructions or contact a professional appliance repair service to diagnose and resolve the problem.