If any of the hooks are broken, the door may not close. The door lock is usually made of plastic that attaches to the door and engages the door switch when the door is closed, signaling the rest of the controls to the microwave, and usually has a spring connected to create downward tension for Hold the hooks. The hooks contact the door keys to power the controls and also lock the retainer to close the door. The hook protrudes from the door and is located in the door switch holder, which is mounted on the microwave frame. The door lock consists of two parts, one microswitch and one hook. door lockĪnother thing that keeps your microwave from turning on is a problem with the door lock. Also make sure that the cooling fan is working and the air flow is not limited. If there is a problem, you must replace the thermal fuse. Then check the circuit with a multimeter. In this case, you must remove the cabinet housing and find the disconnected heat fuse and disconnect the wires from the terminals. If the thermal fuse breaks, it is cut off to maintain electrical safety at the controls or control outlets to prevent the microwave from overheating. These thermal fuses are often located inside the cabinet, near the magnetron. Microwaves use one or more heat slices, sometimes called thermal fuses, to protect the heat in the microwave from overheating. If your microwave does not turn on, the thermal fuse may be off. If not, you must replace the door switch. If 0 is displayed on the multimeter, it means that there is a connection. Press the door open and close button and touch the terminals. Set the multimeter to rx1 to check the connection. ![]() ![]() To access the door switch, detach the front panel of the microwave and remove the door switch. Use a multimeter to inspect and repair the microwave door. If you are going to test the door switch, first unplug the microwave from the power outlet before doing anything. The door switch is located inside the microwave cabinet and is activated by a hook or latch on the door. Sometimes all the components of the microwave, such as the screen, may look healthy, but the microwave will not work, in which case the door switch may be damaged. Door switches, often referred to as primary or secondary connection main switches, when the microwave door is closed by other microwave components, the appliance starts working and when the door is opened, the power is cut off. If any of the door switches break down, the microwave will not work or heat up. ![]() The door switches operate sequentially to ensure that the door is closed properly. Most microwave ovens have three or four door switches. Door switchĪnother reason why the microwave does not work can be due to a defect in the door switch. If you need to replace the fuse, be sure to use the part number recommended by the manufacturers mentioned in the manual. The ceramic fuse is located inside the microwave cabinet and near the entry point of the power cord. You can check the fuse using a multimeter. If the fuse is broken for any reason, it is necessary to check the main components such as magnetron, high voltage diode, capacitor and transformer and related wire terminals before replacing the fuse. When the fuse breaks, the power in the microwave control is cut off and the microwave no longer works. Failure of this part will cause the power in the microwave to be completely lost and the microwave will not turn on. The ceramic fuse is designed to protect the microwave components in the event of severe power fluctuations or in the event of a major defect in one of the microwave’s internal components. If the ceramic fuse fails, the power to the microwave control is cut off and the appliance does not turn on. ![]() Reasons why the microwave does not turn on and how to fix them Reasons why the microwave does not turn on and how to fix them.
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