If the turning plate in your microwave has stopped rotating, but the food still heats up, it is generally safe to continue using the microwave. The turning plate primarily serves the purpose of ensuring even distribution of heat throughout the food as it rotates. Without the rotating plate, there is a possibility that certain areas of the food may receive more heat than others, leading to uneven cooking.
To compensate for the lack of rotation, you can manually pause the microwave and give the food a gentle stir or rearrange its position during the cooking process. This helps promote more even heating and minimizes any hotspots that may occur due to the stationary position of the food.
Additionally, it is advisable to have the turning plate mechanism checked or repaired. A malfunctioning turning plate may be an indication of an underlying issue with the microwave. Consult the manufacturer's instructions or contact a professional technician to assess and address the problem to ensure proper functioning of your microwave.