The reason why the computer fan is loud and how to solve it:
1, fan leaves appear loose
When the fan leaves loose, the blade in the bearing loosening and bearing wear caused clearance to become larger, can be removed to check the fan, the screw button tight, to prevent further vibration.
2, bearing lack of lubricating oil
The bearings play a major role in the fan transport, when the user's computer is used for a long time, bearing lack of lubricating oil, the computer in the process of high-speed rotation will produce noise, so need to drop a few drops of lubricant in the fan bearing, if there is no lubricating oil, can also be used sewing machine oil instead, but do not use edible oil to replace, Because the edible oil pellet is big, can cause damage to the bearing.
3, it is also recommended that users develop regular power boxes and the circuit board of the dust to clean up.
4, the quality of the fan problem, eccentric phenomenon
If the quality of the cooling fan used by the user is poor, due to the technical defects, the center of gravity of the fan blade may not be on the axis, forming an "eccentric" phenomenon, when the use of a long time, the fan "eccentric" phenomenon will become more and more serious, this will not only produce noise, serious damage to the CPU, the solution: the fan down, Then use the thin wire hanging in its center position, wait for its stillness to see which direction to sink, the sinking end of the grinding wheel on a few light, and then test, until the fan can be in the horizontal position, then install it on it.
Specific Repair methods:
1, the fan dust clean, to avoid in the process of installation dust into the bearing;
2, the bearing on the adhesive tear off, will be on the axis of the card pin removed;
3. Use tissue or soft cloth to wipe the residual oil in the bearing, and also wipe the shaft rod;
4, add a little butter lubrication in the bearing;
5, and then the cans of aluminum cut under the bearing card pin diameter as large cut a piece, and in the middle to dig a just can pass through the shaft rod hole, will it pad between the bearing and the card PIN, reduces the bearing axial movement and the parallel movement distance, if the gap is bigger, must cushion several thickness suitable on can, To make the bearing before and after moving distance below 0.5mm;
6, seal the oil well, add a little butter lubrication, and finally the fan will be installed back on it.