Title: The electric fan is not energized, and these parts on the motherboard are the most likely to break, so it can be repaired by spending a few cents to replace them
Electric fans are one of the common household appliances in our lives, and it brings us coolness and comfort in the hot summer months. However, when it suddenly doesn't work, it will undoubtedly cause us trouble. As a professional water and electricity maintenance worker, I have encountered many such cases, some of the problems are not complicated, and only a few original parts need to be replaced and can be easily repaired. Next, I will share some of the experience I have accumulated over the years in repairs, which I hope will be helpful to you.
First, let's understand how an electric fan works. An electric fan usually consists of components such as a motor, blades, power cords, and control circuits. When we turn on the power switch, the power will be transmitted to the motor through the control circuit, driving the motor to rotate, thereby driving the blades to rotate and generate wind. If the fan doesn't turn on, it may be because a part in the circuit is faulty.
In my years of repair practice, I have found that several parts on the motherboard of electric fans are prone to failure and can be easily repaired for only a few cents. Below I will go through each of these originals and their frequently asked questions:
- Capacitors: Capacitors are common components in electrical circuits that are used to store electrical charge or regulate current. In electric fans, capacitors are often used to start the motor or smooth out power supply fluctuations. If the capacitor is damaged, the electric fan may not start or run unstable. Replacing capacitors is often an easy and effective way to repair an electric fan.
- Relay: A relay is an electrical switch that is used to control high currents or high voltages in a circuit. In electric fans, relays are often used to control the start and stop of the motor. If the relay fails, the electric fan may not start at all. Replacing relays is one of the common practices to repair electric fans.
- Resistors: Resistors are used to limit current or reduce voltage, and act as a regulating circuit. In electric fans, resistors are often used to adjust the rotational speed of the motor or to control the wind speed. If the resistor is damaged, the electric fan may not work properly or only operate at a fixed speed. Replacing the resistor is one of the common ways to repair an electric fan.
- Diode: A diode is a semiconductor element that is used to control the direction of electric current. In electric fans, diodes are often used in rectifier circuits or protection circuits. If the diode is damaged, the electric fan may not work properly or be damaged by voltage overload. Replacing the diode is a common practice for repairing an electric fan.
Although these elements play different roles in electric fans, they all have one thing in common, that is, they are susceptible to voltage changes, temperature changes and other factors during use, which can lead to damage. Therefore, when the electric fan is not energized, we can first check whether these originals are damaged, and if necessary, we can consider replacing them to repair the electric fan.
Next, I will go through a real-life case to illustrate how to use this knowledge to repair an electric fan.
One day, I received a repair request for an electric fan that wasn't working. I immediately went to the site and began to check the cause of the failure of the electric fan. After an initial inspection, I found that there was nothing wrong with the power cord and switch of the electric fan, so I turned my attention to the motherboard of the electric fan.
I first inspected the capacitors and found that one of the capacitors had a noticeable expansion on the outside, which indicates that it was damaged. I immediately replaced it with a new capacitor and turned it back on for testing, and sure enough, the fan was back working.
However, I didn't stop checking because I knew that the failure of the electric fan was most likely more than that. I went ahead and checked the relays, resistors, and diodes, among other parts, and found that one of the resistors burned out. I immediately replaced it with a new resistor and tested it again to confirm that the electric fan was completely repaired.
After repairing the fan, I collected the remaining parts and brought them back to the studio for analysis. Through an in-depth study of the damaged parts, I found that their damage is mainly caused by voltage and temperature changes caused by long-term use. Therefore, I have made some suggestions to the customer, such as cleaning the electric fan regularly, avoiding continuous use for a long time, etc., to prolong the service life of the electric fan.
Through this repair experience, I not only succeeded in repairing the electric fan, but also deepened my understanding of the circuit principle and the function of the components. I know that as a professional water and electricity maintenance worker, you not only need to have rich practical experience, but also need to constantly learn and accumulate new knowledge to deal with various complex maintenance cases. I hope that through my efforts and expertise, I can help more people in need and make their lives more convenient and comfortable.