How to use: This magnetron is an internal part of your microwave oven and doesn't require any user - side operation. It works automatically when you turn on your microwave. Attention: Only qualified technicians with knowledge of microwave ovens should replace this magnetron. The high voltages inside a microwave can be extremely dangerous, and they can stay present even after the microwave is switched off and disconnected from the power supply. Maintenance advice: Keep your microwave clean on a regular basis. Wipe the interior and exterior with a soft, damp cloth. Avoid using abrasive cleaners that could damage the magnetron or other parts of the microwave. If you notice any unusual noises or performance issues with your microwave, have it checked by a professional.