If you are absolutely sure that the capacitor is no longer holding a charge, detach the capacitor’s diode. The high-voltage diode will be attached to the high-voltage capacitor, which you have just discharged.Below are the steps you should follow to replace the diode. The most common reason a microwave would fail to heat up is if the high-voltage diode has burned out. Of course, you should still wear rubberized work gloves to be safe. Okay, now that we have the dangerous business of discharging the capacitor out of the way, it should be safe to work on the microwave’s internal components. Hold the screwdriver’s metal against both terminal screws for at least 10 seconds to make sure the charge is gone.Make sure you are touching only the rubber, as touching the metal could kill you. If the terminal screws are exposed, you can lay a flat-head screwdriver across both terminals at the same time to discharge the capacitor.You must be sure that the handle is made of rubber to insulate yourself from a deadly charge. To discharge the capacitor, you will need a screwdriver or needle-nose pliers.First, put on a pair of rubber gloves or rubberized work gloves for protection.The capacitor is not always in the same place in different microwaves, so look up a guide for your particular model to locate it. This should only be carried out by a professional. Do not attempt to discharge the capacitor at home. I cannot stress enough how dangerous this step is. That means you will need to discharge the high-voltage capacitor since this could carry a lethal charge even with the machine unplugged. To check the internal components, you will need to remove the microwave’s outer casing by taking out the mounting screws that run down each side of the machine, then unclipping the casing from the main body. The first thing you need to do is unplug the microwave from the socket. Maybe you are even learning how to be a technician! Read on to learn the steps involved in troubleshooting and fixing a microwave that won’t heat up. Replacing any of these parts is extremely dangerous and should only be done by a repair professional.Įven though professional help is required to fix most problems with your microwave, it doesn’t hurt to know what you are talking about when the repair person comes over. Three of the most common reasons why a microwave is not heating up are high voltage diodes, door switch, and magnetron. Your Kenmore microwave might not be heating up due to several reasons. If your microwave runs but doesn’t heat, there are a few things you need to check out. While Kenmore microwaves are some of the most reliable on the market, breakages are bound to happen eventually. The microwave is one of the most useful appliances you can own.
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