With the use of PCB circuit boards in major electronic products, the maintenance of PCB circuit boards has also become a popular industry. Today, I will briefly share my views on the maintenance of the current PCB circuit board.

　　一: Circuit board inspection

At present, many users of finished equipment have basically no circuit board design drawings after a circuit board failure. Many people are skeptical about PCB circuit board maintenance. Although various circuit boards are very different, each type of circuit board remains the same. PCB circuit boards are composed of various integrated blocks, resistors, capacitors and other components, so PCB circuit board damage is caused by damage to one or some of the components. The idea of PCB circuit board maintenance is based on the above factors. of. The maintenance staff will first inspect the circuit board, find out the source of the problem step by step, and replace parts

　　 Two: Parts replacement

After finding the source of the circuit board failure, the maintenance engineer will recommend the corresponding replacement parts for the use conditions of the entire circuit board based on the performance of the original parts. The user can choose and replace according to his own needs. The process of replacing the parts is not Too much explanation.

　　3: On-board testing

After repairing the circuit board, it is the key to judge whether the repair is successful or not. Here, Xiaojie recommends that maintenance engineers gradually accumulate experience and continuously improve their level in the process of maintenance, testing and overhaul of PCB circuit boards. . General electronic equipment is composed of thousands of components. During maintenance and overhaul, it will be very time-consuming to find problems by directly testing and inspecting every component in the PCB circuit board. very difficult. Then the check-in type inspection method from the fault phenomenon to the cause of the fault is an important method of inspection and repair. As long as the PCB circuit board detects the problem, it is easy to repair.