Galanz microwave oven door as soon as the fuse burns, what is the reason?

The door interlock switch is not sensitive or the position is moved.

1. The overcurrent of the operation leads to the burning of the fuse, including the decline of the aging function of the magnetron, which increases the working current.

2. The performance of high-voltage capacitors and the forward resistance of high-voltage diodes increase. In this case, the capacity of the high-voltage insurance can be appropriately increased.

3. The aging function of the magnetron decreases, which increases the working current. This situation requires the magnetron to be replaced.

4. The fuse is not matched, or the voltage is unstable, which is caused by the self-fusing protection of the microwave oven. Replace the fuse or install a regulated power supply device.

5. After power-on, if the fan and tray are running normally, it means that the power control system and transformer are intact and the fault is in the high-voltage system. If the high-voltage capacitor is found to have broken down, it means that the cause of the fuse blowing in the machine is that the secondary short-circuit current of the transformer is too large. After replacing the capacitor of the same specification, the fault can be eliminated.

Microwave oven. In use, it will happen that the power supply is just turned on, and the fuse is turned on.

i.e. the failure of the circuit breaker. Here's how to troubleshoot this problem.

The microwave oven circuit is divided into two parts: power control system and high-voltage system. During maintenance, the high-voltage transformer can be used as the boundary, and the secondary circuit can be disconnected first, so as to quickly judge the fault location and ensure the safety of maintenance.

First open the microwave oven shell, find the high-voltage transformer and high-voltage capacitor, because the secondary circuit is with connectors.

connected, so just unplug the plug-in, which is very convenient. At this time, if the fuse is replaced and energized, the following two situations will occur.

1) After the power is on, the fan and pallet are running normally. This indicates that the power control system and transformer are intact and the fault is in the high-voltage system. You can continue to check the high-voltage capacitors and high-voltage silicon stacks, and if the high-voltage capacitors are found to have broken down, it means that the cause of the blown fuse in the machine is the secondary short-circuit current of the transformer.

Too big. After replacing the capacitor of the same specification, the fault can be eliminated.

2) After powering on, the fuse in the machine blows out again. From this, it can be judged that the high-voltage circuit system is normal, and the fault occurs in the transformer itself or in the power control circuit. You can unplug the plug-in at one end of the primary circuit of the transformer, if the fan and tray are running normally after power-on, it means that the transformer is damaged.

The cause of the fault may be a short circuit between turns of the transformer winding, which can be eliminated by replacing the transformer fault. If the fuse in the motor is still blown after unplugging the primary circuit of the transformer, the fault must have occurred in the power control system.

The cause of the failure can be a damaged interlock switch, a monitoring switch, a serious leakage or even a short circuit in the power line or wire. With a simple inspection of these components, faults can be identified, and once the components have been eliminated or replaced, the microwave oven can be restored to normal operation.

Galanz microwave oven works normally, but it can't open the door, and the reason for the explosion of the insurance when the door is opened is: the microwave oven is damaged due to the interlocking micro switch.

The solution is: if the interlocking micro switch is damaged, please seek professional maintenance personnel to repair the micro switch or replace it in time, which can solve the problem that the microwave oven cannot be used normally.

Microwave ovens are mainly heated by generating high-frequency electromagnetic wave fields, which cause the molecules in the object to be heated to oscillate at high speed and rub against each other. Therefore, users often have worries and doubts about electromagnetic wave leakage and radiation when purchasing microwave ovens. However, in reality, the radiation from microwave ovens is not as harmful as X-rays and rays.

Summary. Galanz microwave oven opens the door to burn the fuse, in fact, the power supply of the microwave tube has been cut off before the door is opened, and there is no large current, and the current fuse of the microwave tube can withstand it. Therefore, the fault should be a short circuit in the power switch on the door.

Just take it apart and clean up the short-circuited part.

Hello, glad your question, here is still in the query analysis even.

Galanz microwave oven opens the door to burn the fuse, in fact, the power supply of the microwave tube has been cut off before the door is opened, and there is no large current, and the current fuse of the microwave tube can withstand it. Therefore, the fault should be a short circuit in the power switch on the door. Just take it apart and clean up the short-circuited part.

Is it WP700 type, I replaced all the micro switches or not, can you send a physical diagram of the micro switch wiring?

We don't have a physical wiring diagram, after all, we don't have an actual object.

It's still not possible to replace all the micro switches, that is, there is a short circuit in the line, so can you tell me how to wiring it?

Can you tell me the wires on the two micro switches of S2S3 respectively?

We don't know about the wiring, but we know the reason for the short circuit.

We're really sorry about that.

Summary. 1.Capacitor Failure:

Capacitors in microwave ovens are one of the important components of generating microwaves. If the capacitor fails, it may cause a short circuit in the microwave oven circuit, which can cause the circuit fuse to burn. 2.

Faulty high-voltage transformer: A high-voltage transformer is one of the key components of a microwave oven to generate high voltage. If a high-voltage transformer fails, it can also cause a short circuit in the circuit, which can lead to the circuit fuse being blown out.

3.Failure of other components such as microwave oven tubes: Other components of microwave ovens, such as rectifiers, voltage regulators, etc., can also fail.

These faults can likewise cause a short circuit in the circuit, which in turn can lead to a circuit fuse to be blown out.

Hello dear<>

<> Galanz microwave oven is turned on and burns immediately due to the following reasons:

1.Capacitor failure: The capacitor in the microwave oven is one of the important components of the cavity car that generates microwaves.

If the capacitor fails, it may cause a short circuit in the microwave oven circuit, which can cause the circuit fuse to burn. 2.Faulty High Voltage Transformer:

The high-voltage transformer is one of the key components of the microwave oven to generate high voltage. If a high-voltage transformer fails, it can also cause a short circuit in the circuit, which can lead to the circuit fuse being blown out. 3.

Failure of other components such as microwave oven tubes: Other components of microwave ovens, such as whole-circle seepagers, voltage regulators, etc., may also fail. These faults can likewise cause a short circuit in the circuit, which in turn can lead to a circuit fuse to be blown out.

Please note that due to the complexity of the internal structure of the microwave oven and the need for special repair tools and skills to repair, it is recommended not to disassemble and repair the microwave oven by yourself. If your microwave wide cleaning furnace has the above problems, please contact professional maintenance personnel for inspection and maintenance in time<>