What is the reason for the CPU fan to slow down and ring?

Generally, this happens when the weather is cool. Because the thermal expansion and contraction ratio of the shaft and sleeve of the fan is different, when the weather is cold, there will be an open volume, and there will be jitter, so that the speed will definitely not go up, but when the far rotation is stable, the temperature itself has also increased, so that the jitter has basically or completely disappeared, so the speed has come up. There is nothing wrong with it, it will not have an effect, but if you want to clean it yourself, you must be careful not to apply too much force to the fan, otherwise once the fan shaft is deformed, then basically the sound cannot be eliminated!

1 Fans have a lifespan.

2. For example, there are oil-impregnated bearings in the fan, and dust will affect the effect after a long time.

3 If it is a ball, it will be worn.

4 In short, if the fan is going to deteriorate, it will break.

5 If you are willing to do it, you can clean it yourself, or you can buy a new one, but you can also buy a fan, and you can also change the radiator for about 20.

The fan is going to be broken, it is recommended to replace it with a new one. You give the fan a little oil first and see if it still sounds.

The CPU fan is not good, and it is not the same for one person in our bedroom.

It was very loud from the boot to the start-up.

Remove the motherboard battery and replace it with a new one.

Resonance is okay Dust often o( o....

The CPU fan suddenly becomes louder because the temperature of the CPU is too high and needs to be cooled down.

The specific steps to solve the problem are as follows:

The materials we need to prepare are: computer, CPU fan, thermal grease.

1. Disassemble the computer case and blow off the dust with compressed air to ensure that the computer fan is not blocked, so that the computer maintains good ventilation.

2. Use a new thermal grease and evenly apply a small amount of heat dissipating grease to the CPU.

3. Install a new heatsink suitable for the computer to improve ventilation.

4. Install a fan to increase air flow, and discharge the heat from the back of the case, which is conducive to cooling.

Here's why CPU fans suddenly get louder:

The fan blades are "eccentric":

Under normal circumstances, the center of gravity of the fan blades is on the axis, and the operation is very smooth and the noise is very small. If the quality of the fan is not good, the center of gravity of the fan blade does not cause "eccentricity" on the shaft, and after the fan rotates, the fan bearing gradually wears out, which makes the vibration aggravated and the noise becomes louder. If you're a gamer, the impact is even greater.

If the speed of the hard disk is low and the memory is small, then when processing a large amount of game data, the CPU will inevitably increase the working pressure of the CPU.

CPU fan bearing lack of oil:

The fan of the sliding bearing has been used for a long time, and the lubricating oil inside has dried up.

The fan speed is high:

The reason why the new fan is loud is often because the fan speed is very high, especially the original fan, the fan blade area is relatively small, and the number of aluminum heat dissipation fins is small, so if the heat is large, in order to ensure that the temperature of the processor is not too high, it is necessary to increase the speed of the fan of the radiator.

Too much dust accumulates:

If the CPU fan is used for a long time, a lot of dust will accumulate on the fan blades, and if it is in a dusty and humid environment, a layer of mud-like dirt will form on the fan. Dust accumulation will bring two major hidden dangers, the first is to cause the speed to drop and affect the heat dissipation effect, and secondly, it will increase the rotational resistance of the fan, and at the same time, it will make a lot of noise due to the reduction of the dynamic balance of the fan.

The first thing is to clean the dust on the fan, and after cleaning it to see if it is fastened, it is best to put some lubricating oil on the fan bearing part, such as sewing machine oil.

Is the landlord using a computer environment? In winter, the lubricating oil inside the fan will condense, and when the friction heats up, the condensed part of the lubricating oil will melt away, such as the noise is still the same after a period of time when the machine is turned on. It should be the dust deposition of the fan blades, just clean up the dust, if there is still no effect after cleaning, that is, the friction between the soft magnet of the fan and the stator magnet in the middle, then change the fan and change the fan about 5 or so.

The heat dissipation is not very good, more than 50 degrees, in the past, it can be better to dissipate heat without the fan overload, but now there may be more dust in the heat sink, and the fan needs to be super in line with the operation to cool down, so the sound becomes louder, dust removal, oiling. Should.

Computer case noise cancellation.

1.Make sure the noise is generated by that fan.

2. Determine whether there is a gap in the connection of each part of the fan that makes noise, and whether the buckle is tightened.

3. Make sure there is no excessive dust on the fan.

4. Make sure to add lubricating oil to the long-used fan bearing.

5. Make sure that the swing amplitude of the fan bearing is the smallest.