Laptops, also known as laptops, are favored by most people due to their portability, which has led to many problems during use. For example, today, the editor will analyze the reasons for excessive sound when using laptops.

Root cause analysis:

1. The CPU cooling fan accumulates dust, which is the natural enemy of all household appliances. It not only affects the CPU cooling, but also easily adsorbs a large amount of dust and stays on the fan blades when the CPU fan is running.

2. The bearings of the CPU cooling fan are short of oil. After running the cooling fan for a certain period of time, due to various reasons such as dust, the bearings of the fan need to be re oiled.

3. The CPU fan blades are "eccentric", causing the center of the bearings to deviate from the center of gravity of the blades, resulting in looseness of the fan. During operation, the wear rate of the fan increases, and the noise becomes louder and louder.

Solution:

1. Since the problem is caused by dust, we can just remove the dust. For friends who are familiar with laptops, you can disassemble and clean the dust yourself, or you can find professional maintenance personnel to clean it for you. Generally, the market price for cleaning dust is 30-60, and if the other party's quotation is too high, you can negotiate.

2. Oil on the cooling fan bearings: First, remove the CPU cooling fan, and then carefully drip sewing machine oil into the mesh bearings. When oiling the bearings, be careful not to let the oil overflow. A bottle of sewing machine oil costs a few yuan and can be reused multiple times.

3. If encountering the situation of eccentricity of the cooling fan blades, it is necessary to consider that the cooling fins of the stable fan are used to correct the eccentricity problem of the fan; There are two methods. Firstly, remove the cooling fan and find a thin line to pass through the small hole in the center of the fan blade. Then, lift the fan blade and observe which end is heavier when it descends. Grind it on a grinding wheel until the rear fan blade is on a horizontal line. The second option is to simply replace the fan, as it saves time.