Simple DIY Microwave Repair

Basics

• Plug your microwave directly into a wall outlet, and do not use an extension cord or adapter. Plug the microwave into its own circuit as other appliances can draw power away from it. Verify that the door is completely closed, and remove any items blocking the door. Check the door gaskets, and clean them if they are dirty. If the gaskets are falling off of the door, replace them. If any of the door components are broken, replace the door. Check your household fuses and circuit breaker. Reset the circuit breaker if tripped. If any of the fuses are broken or black, change them out. Test the magnetron by placing 1 cup of cold water in the microwave. Heat it for 2 minutes at maximum power. If the water doesn't heat up, call for service. Your microwave won't start cooking food if you have set the timer and have not selected cooking setting. Pick a cooking setting, and press "Start" to begin the cooking process.

Carousel

• The carousel is the component that rotates the turntable (plate). If the turntable is not turning, verify that you have correctly positioned it on the carousel. Clean the carousel, the table and the floor of the microwave. If the carousel still won't turn, unplug the microwave and remove the floor of microwave. Examine the carousel motor. If it is burned out or won't turn easily, replace it.

Flickering/Arcing

• Your microwave display normally flickers while cooking. If the flickering is extreme, and your food is not cooking properly, contact a microwave repair person. If you see arcing (mini-lightening), stop the microwave and clean food and liquids from interior. If you see burn marks on the panels, scrub them down with sandpaper and use microwave interior paint to cover up the spots. If the wave guide is burned, replace it. Never use cookware that has silver or gold lining or aluminum foil in the microwave.

Cooking Issues

• Always defrost foods before cooking them in the microwave to reduce cooking times. Use only the recipe-recommended cooking times for the food to prevent overcooking. If the microwave won't heat, but you hear noise, this indicates a problem with the capacitor, magnetron or power diode. If it sounds normal, but there's still no heat, you have a problem with your circuitry. For these problems, contact a service technician.