Circuit board repair is an emerging repair industry

Circuit board repair is an emerging repair industry. The automation level of industrial equipment is increasing, so the number of industrial control boards in various industries is also increasing. After the industrial control board is damaged, the high cost of replacing the circuit board (ranging from a few thousand yuan to tens of thousands or hundreds of thousands of yuan) has become a headache for enterprises. In fact, the vast majority of these damaged circuit boards can be repaired in China, and the cost is only 20% -30% of purchasing a new board, and the time required is much shorter than ordering a board abroad. Below is an introduction to the basic knowledge of circuit board maintenance.
Almost all circuit board repairs do not have drawing materials, so many people have a skeptical attitude towards circuit board repairs. Although various circuit boards vary greatly, what remains unchanged is that each type of circuit board is composed of various integrated blocks, resistors, capacitors, and other devices. Therefore, circuit board damage must be caused by the damage of one or some of the components. The idea of circuit board repair is based on the above factors. Circuit board maintenance is divided into two parts: inspection and repair, with inspection occupying a very important position. Test the basic knowledge of repairing each component on the circuit board until the faulty part is found and replaced, and then a circuit board is repaired.
Circuit board inspection is the process of identifying, determining, and correcting faults in every electronic component on a circuit board. In fact, the entire testing process is a thinking process and a testing process that provides logical reasoning clues. Therefore, the testing engineer must gradually accumulate experience and continuously improve their level during the maintenance, testing, and repair of the circuit board. General electronic devices are composed of thousands of components. During maintenance and repair, it would be time-consuming and difficult to detect problems by directly testing and inspecting each component on the circuit board one by one. So the targeted maintenance method from the fault phenomenon to the fault cause is an important maintenance method. Once the problem is detected on the circuit board, maintenance becomes easy. The above is an introduction to the basic knowledge of circuit board maintenance.