We have received some customer advice in some factory bought some cooling fans, then did not use, in the middle of a long period of time to take out use, found that the cooling fan does not turn, contact the manufacturers there is no response, how to do? There are many reasons for the cooling fan not to turn, 1, may be IC broken, 2, may be enameled wire broken, 3, the balance of the fan blade is not good, 4, the use of poor bearings, no quality assurance, in fact, the main problem is still the quality of the cooling fan itself. It is best to get the cooling fan not to rotate to the fan factory for testing and analysis by professional engineers. Some problems need to be detected by the fan, if in the purchase of a cooling fan problems can not contact manufacturers, this problem is very irresponsible, even the most basic quality assurance is not, so in the choice of cooling fan to choose a reliable manufacturer. The above is the reason why the cooling fan introduced by Dong Xingyue does not rotate. A good cooling fan is very important. It can not only make the equipment run normally, but also prolong its service life and increase its working efficiency, if you want to know more about the cooling fan, you can pay attention to us.