How to handle common faults of DC fans?

DC Computer fan has been very common in our daily life, such as laptops and computer hosts, which use radiator fans. However, when we use the DC Computer fan, there is no doubt that there will be some common failures. So what should we do when there is a problem with the DC cooling fan?
1. When using, the DC fan suddenly emits very loud noise, sometimes even much louder than the sound of the chassis power supply.
Solution: This kind of thing usually occurs when the lubricating grease of the fan is used, or when the fan becomes dusty. Everyone only needs to separate the heat pipe radiator from the fan, clean and wipe the fan, and apply a little lubricating grease.
2. The fan has moved its direction during use.
Solution: This kind of thing must be a broken fastener for the fixed fan, just replace it.
3. When the fan rotates, there is a "da da da" knocking sound.
Solution: This is also caused by the fan encountering wires. It is better to use Rubber band to bind the scattered wires satisfactorily.
DC DC fan
What determines the price of DC fans?
There are various brands and styles of DC fans on the market, making it difficult to choose from. However, it is puzzling that manufacturers of different types of DC DC fans will come up with different types of prices, which can be difficult for some new buyers and sellers. Because they do not understand, they cannot be too clear about the true or false price. In that way, we can tell you that the price of DC fans is generally determined from the following aspects.
1. Materials used
In terms of materials, the plastic material for micro fans is generally made of PBT, which has good heat resistance and flexibility. However, some require secondary or tertiary materials, and this recycled material has only slightly different characteristics, resulting in a lower price.
2. Rolling bearings
From the perspective of rolling bearings, there are generally two types of steel balls with a total oil content. Generally speaking, steel balls are more expensive than oil balls, because rolling bearings are developed after oil bearings, with longer service life and more complex processing techniques
3. Materials
In terms of materials, there are generally plastic, iron, copper, aluminum, and some better ones are silver. The better the material, the more expensive the natural price will be, which goes without saying. Another thing is the specifications. The more specifications, the larger the material used, the more expensive it will be.
4. Brand
As is well known, products from large brands are much more expensive. Ultimately, well-known brands not only have quality assurance but also ensure after-sales service, so the natural price is a bit higher.