Why does a good fan make noise? Why does it malfunction? I don't know if you have ever been curious about this? The following editor will share with you an analysis of these reasons.
leadDC cooling fanThe main causes of noise are: fan dust, normal wear and tear, motor damage, etc.
Fan dust accumulation: While the air convection generated by the cooling fan during work dissipates heat to the notebook, it also leaves the dust in the air on its surface and near the heat dissipation port, which not only affects the heat dissipation effect, but also increases the load of the cooling fan. The air convection environment causes noise.
If this phenomenon is timely dust removal, it will not affect the components; if it is not timely dust removal, it will cause the fan shaft to wear and produce fan blades "eccentric" over time. This kind of noise can only be solved by replacing the cooling fan.

Normal wear and tear: cooling fan blade "eccentric" is the main reason for the noise. The center of gravity of the fan blade is on the axis, and the operation is very stable and the sound is very small. However, with the daily use and wear, there will be a certain deviation. The center of gravity of the fan blade does not cause "eccentricity" on the axis ".

After such a fan rotates, it is equivalent to an oscillator (the oscillator is to add an eccentric wheel on the motor shaft). As the use time becomes longer, the fan bearing gradually wears out, which increases the vibration and noise.

Motor damage: The cooling fan is a consumable part. After the motor reaches the design life or the motor is damp, internal short circuit, overload and power surge may cause motor damage. This fault is a normal phenomenon and can be solved by replacing the fan.
Recommendations for use: The cooling fan has normal wind sound during work, but when you find that the fan sound is significantly increased compared to the purchase or is significantly different from the wind sound emitted during normal work (such as scratching sound, collision sound), At this time, the fan needs to be overhauled or dust cleaned.

The above is the analysis and solution of the noise and failure of the DC cooling fan. For more information, please consult our official website!