Knowledge requirement of maintain the ATX power

1.The natural of maintenance is the replacement process after the faulty component is discovered.Therefore, the discovery of faulty components is the first step in maintenance. 

Of course, some faulty components are more obvious, such as cracked fuses. However, some of the faulty components need to be measured by an instrument rather than simply observed by the naked eye before they can be detected. When we focus on a specific component, we first use a multimeter and other instrument to measure it, then analyze the results of the measurement data, and finally come to the conclusion that the element is good or bad.

In fact, the process of judging whether a component is good or bad is a process of comparison. It's just that it's not height, it's the result of the instrument. First, we must get familiar with and master the measurement results of the good components, and then compare the measurement results of the good components with the actual measurement results of the components which need to judge the good or bad. If both are the same, the elements that need to be judged are good, and vice versa. Therefore, a skilled grasp of component performance is a necessary preparation to become a qualified repairman.

Further, readers should gradually establish the concept of components, circuits and even signals in practice. To sum up, the line addresses the "what" issue of the ATX power supply. One of the most important is to establish the concept of "switch", which is the essence of ATX power supply as a switching power supply.

2.The use of multimeter in ATX power maintenance.

Multimeter is a necessary measuring instrument for maintenance. Although any multimeter can be used for maintenance of on-off power supplies such as ATX, the digital is superior to the pointer and the automatic range is superior to the non-automatic range.