How to repair the cooling fan when it fails?

How to repair the cooling fan when it fails?
  As a machine, failure is inevitable. We didn't choose to replace it immediately, but to see how to fix it. At the same time, if the machine frequently replaces the DC cooling fan, it will also cause this type of failure. So, how to check and repair when the cooling fan fails?
 
   At this time, we have to find the reason from the faulty cooling fan. If the fan of the radiator stops rotating, one of the possible reasons is that the rotation speed of the fan does not reach the normal speed required by the radiator.
 
   In this way, if the cooling fan cannot reach its operating power, it will turn very slowly or even not, and the heat dissipation effect will definitely not be as good as before. At this time, we can try to adjust the fan blades so that its speed can meet the corresponding power requirements of the radiator. This time, it not only solved the problem, but also saved you the trouble of replacing a new device.
 
   If there is a sudden special noise during use, even louder than the sound of the power supply of the case, it may be due to a long period of disrepair, and too much dust has collected on the surface of the cooling fan and the radiator gap.
 
   We can separate the cooling fan and the radiator first, and the radiator can be cleaned directly with tap water. You can wipe it with soft paper first, and use a small medical cotton swab to wipe the gap. Open the plastic sticker on the back of the fan, and use ordinary sewing machine oil to add 1 drop to 2 drops to the movement.
 
I believe that after the above introduction, everyone has an understanding of how to repair the cooling fan when it fails. If you have any questions, please consult Ruiapple