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What is the reason for the loud noise of the computer cooling fan?

2021-10-23 08:18:15
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Nowadays, most people use computers in their daily work, and if the computer suddenly breaks down, it will be very troublesome. Among them, if the computer is hot, it will also make people very worried. Then, it is necessary to have a good computer cooling fan , and a good computer cooling fan will work very lightly. So what is the reason for the loud noise of the computer cooling fan? Next, the editor of Juwang Electronics will explain to you:

1. Lubricate the bearing
The most important part of the fan drive is the bearing. For a long time, the lack of lubricating oil will cause noise when rotating at high speed. So, if we don't use a sewing machine, we just put a few drops of lube on the cooling fan bearing. But be careful not to replace it with edible oil, because its particles are relatively large, which can easily cause damage to the bearing.

Centrifugal Heater Fan


2. The vibration noise of the fixed fan blade is also an important part of the noise of the cooling fan , because the looseness of the blade on the bearing and the wear of the bearing cause the gap to become larger, so just remove the split cooling fan and tighten the screws. Shake again.


3. Grinding the fan blades
In addition, a low-quality cooling fan is used. Due to defects in craftsmanship, the center of gravity of the fan blade may not be on the axis, resulting in "eccentricity". After long-term use, the cooling fan will appear "eccentric" phenomenon. More and more serious, it will not only generate noise, but also damage the CPU in severe cases. For this, you can remove it all and hang it in the center with thin wire. After it is still, look at the sinking direction, gently grind the sinking end on the grinding wheel a few times, and try again. Wait until the cooling fan can be in a horizontal position before installing it.


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