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Causes and Solutions for Loud Laptop Cooling Fan Sound


What should I do if my laptop fan is loud? After laptop is used for a long time, there will be a problem that fan sound will become louder, so how to solve this problem? Let me share with you causes and solutions for excessive laptop fan noise.

Causes and Solutions for Loud Laptop Cooling Fan Sound

1. If fan is used for too long, fan coil will age and lack oil.

2. Due to misuse, center shaft has bent due to shock or vibration.

3. The position of fan is misaligned due to excessive dust accumulation or loose fixing screws.

4. Nutrition problem.


1. Remove dust

Generally speaking, a newly purchased fan is always less noisy, but after a certain period of use it will get significantly louder. In fact, dust is one of important reasons for increase in fan noise, because all-penetrating dust can always get into a case that is not completely sealed. When CPU fan rotates at high speed, swirl effect makes it easier for dust to stick to fan. Undoubtedly, at this time it is necessary to remove CPU fan and clean it well, and when removing dust, one should pay attention to gap between back of fan and heatsink, which is easiest to forget about.

2. Add lubricating oil

For fans with oil bearings, motor drive shaft often becomes inflexible after a long period of operation. For this reason, it is recommended to add lubricating oil to this position, recommending mechanical lubricating oil or gasoline engine oil. Of course, you must be careful when adding lubricating oil and not overfill it.

3. Reduce vibration

Also, problem of vibration requires our attention. Usually, a fan rotating at high speed collides with heatsink at high frequency. If fan and heatsink are stable and fit, vibration and noise generated by collision can be greatly reduced. For example, if you hold a fast-spinning CPU fan in your hand, its noise is much less than that of a heatsink-mounted one, because soft hands absorb most of vibration. According to this principle, adding a 1-2mm thick soft pad (such as leather, rubber) between four corners of fan and contact surface of heatsink can effectively reduce noise generated by fan vibration and heat. sink.