Below, watch the video on how to repair a microwave oven magnetron yourself
Posted: Tue Feb 18, 2025 11:09 am
If there are no faults in this part, you should inspect the diode in the rectifier circuit of the power supply. Most often, it is this that causes the fuse to burn out with this type of failure. The fuse in the microwave oven should be checked for a break visually or with an ohmmeter, if necessary, replace it with a working one and analyze the causes of the burnout, in order to avoid a repeat of a similar situation, paying attention to various darkening of the radio elements, which indicate a malfunction in the microwave units.
The second fuse F2 is located after the high-voltage transformer (transformer) in the magnetron circuit and is called high-voltage. It is "hidden" in a plastic case in the form of a tube and is located next to the mexico telegram data transformer. This fuse fails due to the failure of the high-voltage diode or capacitor. It is better to replace the fuse with a new factory-made one, since it is calibrated for the required operating current. Well, it is imperative to replace the part that caused the fuse to burn out. Below, watch a video on how, in extreme cases, you can repair the high-voltage fuse of the microwave oven yourself:
Magnetron failure
If the oven backlight works, the plate rotates, but the microwave does not heat the food, then most likely the cause of the malfunction is a malfunction of the magnetron. In the above diagram, the magnetron is designated as "magnetron".
The magnetron is a device that generates microwave radiation. This is why, if this part fails, the oven does not heat.
The magnetron is located in a small rectangular metal case. First, you need to clean it, and then visually inspect it. Next, inspect the magnetron unit itself. Namely, the integrity of the wires connecting the terminals and the case. Often the reason for the magnetron not working is the failure of the feedthrough capacitor.
The second fuse F2 is located after the high-voltage transformer (transformer) in the magnetron circuit and is called high-voltage. It is "hidden" in a plastic case in the form of a tube and is located next to the mexico telegram data transformer. This fuse fails due to the failure of the high-voltage diode or capacitor. It is better to replace the fuse with a new factory-made one, since it is calibrated for the required operating current. Well, it is imperative to replace the part that caused the fuse to burn out. Below, watch a video on how, in extreme cases, you can repair the high-voltage fuse of the microwave oven yourself:
Magnetron failure
If the oven backlight works, the plate rotates, but the microwave does not heat the food, then most likely the cause of the malfunction is a malfunction of the magnetron. In the above diagram, the magnetron is designated as "magnetron".
The magnetron is a device that generates microwave radiation. This is why, if this part fails, the oven does not heat.
The magnetron is located in a small rectangular metal case. First, you need to clean it, and then visually inspect it. Next, inspect the magnetron unit itself. Namely, the integrity of the wires connecting the terminals and the case. Often the reason for the magnetron not working is the failure of the feedthrough capacitor.