Circuit board maintenance is a new repair industry. The degree of automation of industrial equipment is becoming more and more high, so there are more and more industrial control boards in various industries, after the damage of Industrial Control Board, the high cost of replacing the circuit board (less thousands of yuan, more tens of thousands or hundreds of thousands of yuan) has also become a very headache for enterprises. In fact, the vast majority of these damaged circuit boards in the country can be repaired, and the cost is only the purchase of a new board of 20%-30%, the time used is much shorter than the time of foreign calibration board.

The basics of circuit board maintenance are described below. Almost all circuit board maintenance has no drawing materials, so many people are skeptical of circuit board maintenance, although a variety of circuit boards are very different, but the same is that each circuit board is made up of a variety of integrated blocks, resistors, capacitors and other devices, so the circuit board damage must be one or some of the device damage caused, The idea of circuit board maintenance is based on the above factors. Circuit board maintenance is divided into two parts of inspection and maintenance, in which detection occupies a very important position.

Perform a test of the basics of each device on the circuit board until the bad pieces are found and replaced, and a circuit board is repaired. Circuit board detection is the process of finding, determining and correcting the faults of each electronic component on the circuit board. In fact, the whole testing process is the thinking process and provide logical reasoning clues to the testing process, so, testing engineers must be in the circuit board maintenance, testing, maintenance process, gradually accumulate experience, and constantly improve the level. General electronic equipment is composed of thousands of components, in maintenance, maintenance, if the direct one by one test inspection of each component in the circuit board to find problems, it will be very time-consuming, implementation is very difficult. Then from the fault phenomenon to the cause of the fault of the seat maintenance mode, is an important maintenance method. As long as the circuit board detects the problem, then the repair is very easy. The above is an introduction to the basic knowledge of circuit board maintenance.