How Do I Fix a Microwave That's Not Heating? Microwave Oven Repair Services

The microwave is one of the most used electronic devices these days. Most people, regardless of location, have a microwave for cooking and heating. Microwaves are easy to use, take up less space and serve several purposes. However, due to their constant use, they may begin to show certain failures from time to time. For example, you can stop the warming and there could be many reasons or causes for this. If your microwave does not heat up, you can go through the following causes and probable solutions.

• High Voltage Diode
• Door Switch
• Magnetron
• High Voltage Capacitor
• Thermal Fuse

High Voltage Diode

If your microwave does not heat up, you may have a problem with the high voltage diode or rectifier. This component helps provide the high voltage that powers the magnetron. The high voltage diode is near the magnetron and the high voltage capacitor, so access will require removal of the cabinet. Turn off the power and also discharge the high voltage capacitor to avoid electric shock. You can then test the continuity of the diode with a multimeter. The diodes are polarity specific and you should see a low resistance with the meter wires in one direction and a higher resistance when the meter wires are reversed. Most multimeters will have a special configuration for diodes or rectifiers. If the high voltage diode shows low resistance in both directions or shows no continuity at all, then it must be replaced. If you find that high-voltage diode tests are fine, then you must determine if power is being supplied to the circuit. This is a high voltage circuit and additional tests should only be performed by a qualified microwave oven repair technician.

Door Switch

Another possible cause when the microwave does not heat up is a problem with the door switch. The door switch is also known as the interlocking switch and can be accessed by removing the cabinet. For this, first disconnect the microwave and then try a multimeter. Press the actuator button and check the switches. If you do not find continuity at this point, you may need to replace the switch. In addition, when testing this, you must ensure that the door hooks as this activates the door switch work properly.

Magnetron

If your microwave does not heat up, then the problem could also be in the magnetron. Magnetron is an important part of the microwave and is responsible for providing the heat that cooks food. If the magnetron breaks, this can cause the fuse to explode, which could cause other components to fail. To verify the magnetron, disconnect the microwave and then remove the cabinet. After this, discharge the high voltage capacitor. While testing the magnetron, disconnect the connected wires and connect the multimeter wires to the magnetron terminals. The continuity you get should be approximately 2-3 ohms of resistance between the terminals, as well as the grounded outer shell. If this is normal, then the problem could be something else.

High Voltage Capacitor

Microwave ovens produce a very high voltage to power the magnetron antenna, which emits the energy that cooks food. When a high voltage transformer fails, an arc will usually form and have a burning smell. (Warning: the microwave oven can store a lethal amount of electricity in your high voltage capacitor, even after the microwave oven has been unplugged. Due to the high operating voltage and the possibility of electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the high voltage transformer.)

Thermal Fuse

The thermal fuse cuts power to the microwave if the microwave overheats. To determine if the thermal fuse has blown, use a multimeter to test its continuity. If the fuse has no continuity, replace it. The thermal fuse can’t be reset; if the fuse is blown, it must be replaced.

After testing all the above solutions, if you think you need an expert technician to repair your microwave oven, Call the Doorstep Hub at +91-88866 88666 and get the service(microwave oven repair services) on the same day.