The maintenance  basically can be divided into two: pre-sale and after-sale. The former is mainly due to the product quality such as reverse welding,  incorrect assembly and so on. This has seldom occurred among our products as the production system is rather mature. However, in case it happens, we will be responsible for it totally include sending a new one to you.

By contrast, the after-sale problem will be much more common and easier to solve as well. The leading cause of the damage of the power supply should be the aging component or inappropriate operation. Meanwhile, the vital point of after-sale maintenance is  the broken power supply board must be tested with weaker power in order to protect the rest of the components.