PCB repair tips

PCB is currently used in major electronic products, and the repair of circuit boards in PCB factories has also become a popular industry. The editor will briefly share his views on the repair of the current PCB circuit board for everyone.

At present, there are various industries that use circuit boards in my country. In the early stage of production, the production process and raw materials will be determined according to their own needs. However, with the increase of the frequency of use of finished products, more or less circuit board failures will occur. Many people will directly replace the circuit board, but the high cost of replacing the PCB circuit board (as few as several thousand yuan, as many as tens of thousands or hundreds of thousands of yuan) has also become a very headache for enterprises. However, these damaged circuit boards can be repaired in China, and the maintenance cost is relatively affordable, accounting for only 20%-30% of new boards. For some high-density equipment, international ordering is required, and maintenance of circuit boards in PCB factories will be faster.

Step 1: Inspection of circuit boards

At present, many users of finished equipment have basically no design drawings of the circuit board in their hands after a circuit board failure. Many people will be skeptical about the maintenance of PCB circuit boards. Although various circuit boards are different, the same thing is that each The PCB circuit board is composed of various integrated blocks, resistors, capacitors and other devices, so the damage to the PCB circuit board must be caused by the damage of one or some of the components. The idea of the PCB circuit board maintenance is based on the above factors. up. The maintenance staff of the battery circuit board factory will first test the circuit board, find the source of the problem step by step, and replace the parts.

Step 2: Parts Replacement

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

Step 3: On-board inspection

The key to judging the success of the repair is to carry out on-board inspection of the circuit board after maintenance. Here, the editor of the battery circuit board factory recommends that the maintenance engineers gradually accumulate experience in the maintenance, testing and repair process of the PCB circuit board. level up. General electronic equipment is composed of thousands of components. During maintenance and repair, it will be very time-consuming to find problems by directly testing each component in the PCB circuit board one by one. very difficult. So from the fault phenomenon to the cause of the fault, the check-in type maintenance method is an important maintenance method. As long as the circuit board of the PCB factory detects the problem, the maintenance is very easy.

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