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How to eliminate the noise of computer spring fan?

Update:03 Apr 2020
Summary:

The fan of the computer spring machine is too loud to g […]

The fan of the computer spring machine is too loud to generate noise, which makes people feel uncomfortable. It is necessary to reduce the sound of fan rotation. Generally, the following three methods are used to eliminate the noise:
1. Observe whether there is dust on the fan blades or whether there is dust on the inner wall of the fan frame near the fan blades. If there is dust, remove it.
2. Each fan has a circular label. Tear off the label (be careful not to tear it off, because you have to stick it back), you can see a small circular plastic cover. Open the plastic cover and go to Add oil to the fan shaft and reset it.
3. The most common method to reduce the sound of the computer spring machine fan is tempering and observation, which is convenient and effective.