
Microwaves have become a common household appliance. Some users may encounter a situation where the microwave operates normally, the turntable still rotates, but the food inside remains cold. This is a sign of a blown fuse in the microwave. If you're facing this issue, read this article to understand the causes and solutions.
1. Fan malfunction
The function of the fan is to cool and dissipate heat from the internal components of the microwave. When the fan malfunctions, the cooling process becomes challenging, leading to an increased temperature of the fuse. If this situation occurs frequently, it can cause the fuse to burn out or explode, resulting in the microwave working but failing to heat the food.
The fan malfunction can be caused by several reasons, such as:
- The fan is obstructed by a foreign object inside.
+ Prolonged lack of fan maintenance leads to the accumulation of grease and dirt inside, hindering air circulation and reducing cooling efficiency.
+ Placing the microwave in a tightly enclosed space hinders the heat dissipation process due to the lack of ventilation.

Remedies:
Check if there are any foreign objects obstructing the fan, and remove them if found.
Regularly clean to eliminate debris and grease accumulation inside the microwave.
Place the microwave in a well-ventilated area to ensure effective heat dissipation.
2. High-voltage Transformer, Capacitor, or Diode Failure
The high-voltage capacitor, along with the high-voltage diode and transformer, generates electrical energy for microwave emission. If any of these components short circuits or malfunctions, it results in the microwave fuse breaking.

Remedy: Due to the potential danger of the microwave capacitor storing up to 2000V, even when unplugged, it is advisable to contact professional repair technicians for effective troubleshooting and assistance.
3. Metal Debris or Loose Screws Issues
After some time of use, screws inside the microwave may become loose, or metal debris may get stuck, leading to electrical leakage and the microwave fuse breaking.

Remedy: First, check inside the microwave. If there are loose screws, tighten them, or remove any stuck metal debris.
4. Automatic Door Lock Malfunction
The interlocking door lock system is formed by multiple sensitive press switches. This device functions to prevent leakage of microwaves into the environment, negatively affecting human health. When the on/off switch of the microwave door is faulty, it leads to the microwave fuse breaking.

Remedy: The automatic door lock has complex components, requiring a highly skilled repair person. Contact professional technicians for assistance in resolving this issue.
Above are the causes and solutions for the microwave fuse breaking issue that you need to be aware of. Save this information for reference and application. Don't forget to follow Mytour to quickly update the most useful information.
Explore the range of microwaves available at Mytour
