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In today's highly integrated electronic devices, the performance and reliability of the cooling fan, as a key component to ensure stable operation of the device, directly affect the efficiency and lifespan of the entire system. However, in practical applications, many users or technicians may encounter the problem of power failure in the pins of the cooling fan, which not only leads to the fan not working properly, but also may further cause serious consequences such as equipment overheating, performance degradation, and even damage. As a professional manufacturer of cooling fans, we would like to delve into this issue and provide targeted solutions.

1、 Analysis of Reasons for Non Power Supply of Cooling Fan Pin

1. Power line malfunction

Line breakage: Long term use or improper installation may cause internal breakage of the fan power cord, affecting power transmission.

Poor plug contact: Poor contact between the plug and the socket, or oxidation and corrosion of the metal sheets inside the plug, can lead to poor power supply.

2. Fan interface issues

Interface mismatch: Different models of fans may have different interfaces, and if mismatched fans or interface converters are used incorrectly, it may result in incorrect pin connections.

Interface damage: The fan interface on the motherboard or power supply is damaged due to aging, short circuits, or other reasons, and cannot provide stable power.

3. Fan malfunction itself

Motor malfunction: The internal components of the fan motor are damaged, such as burnt coils, stuck bearings, etc. Even if the power supply is normal, it cannot rotate.

Pin design defects: Some low-end or inferior fans may have issues with unreasonable pin design and weak soldering during the manufacturing process.

4. BIOS/firmware configuration issues

Fan control mode: Some motherboards have intelligent fan control functions in their BIOS or firmware. Improper settings (such as turning off or setting to the lowest speed) may also cause the fan to malfunction.

2、 Solution

1. Check the power circuit and plug

Visual inspection: First, check if there is any obvious damage to the power cord and if the plug is clean and free of oxidation.

Replacement test: Use a multimeter to test if the power line is powered on, or try replacing the power line with a new one for testing.

2. Confirm interface matching and check interface status

Verify specifications: Ensure that the fan interface matches perfectly with the interface on the motherboard or power supply.

Cleaning the interface: Use a cotton swab dipped in a small amount of alcohol to clean the dust and oxides inside the interface.

Replace interface: If the interface is severely damaged, consider replacing the fan interface on the motherboard or power supply.

3. Check the status of the fan and replace it

Rotation test: manually try to rotate the fan blades to check if they are smooth and unobstructed.

Replace the fan: If it is confirmed that the fan itself is faulty, replace it with a reliable new fan in a timely manner.

4. Adjust BIOS/firmware settings

Enter BIOS/firmware: Restart the computer and press specific keys (such as Del, F2, etc.) to enter the BIOS/firmware settings interface.

Check fan control: Find the fan control related options and ensure that they are set to automatic or adjust the speed according to requirements.

Save and exit: After adjusting, save the settings and exit BIOS/firmware.

The lack of power supply to the pins of the cooling fan is a problem that involves multiple factors and requires careful investigation and patient resolution. As a professional manufacturer of cooling fans, we remind users that when encountering such problems, they should first start with a simple power line and interface inspection to gradually eliminate the fault. At the same time, choosing high-quality and guaranteed service cooling fan products is also the key to preventing such problems from occurring. If needed, you can consult professional technicians or contact our cooling fan manufacturer for more detailed help and support.