For researchers, the process of developing a circuit board is lengthy and full of expectations. After successful production, circuit board testing probes need to be used for circuit detection to ensure accuracy before normal use. Therefore, we will explain how to quickly detect faults in circuit boards.
The process of making PCB circuit boards is not simple. The process from drawing to production, and then welding is very simple, but this is not the whole process. The production of circuit boards is not difficult, but the difficulty lies in the fault detection of the entire circuit and electrical performance after welding. Whether engineers or hobbyists, encountering faults while debugging and testing circuit boards is a headache, just as bad as programmers developing bugs. In the industry, some people are very interested in debugging circuit boards, just like programmers checking for vulnerabilities and fixing them. Circuit board malfunctions are common, such as design issues with the drawing itself, short circuits in the wiring, component damage, or quality issues. Most common problems are mainly concentrated in the problem of components, such as capacitors, resistors, ICs, transistors, etc., which have obvious damage. It is necessary to first check whether the components are damaged. You can observe them with your eyes to see if there are obvious damages, defects, or burning marks. If such a phenomenon occurs, we can replace it with new components to solve the problem. Of course, it is definitely not possible to solely examine the quality of PCB components with the naked eye, and we need to use professional equipment for inspection and maintenance; Our commonly used tools include capacitance meters, multimeters, soldering irons, etc. During the debugging process, when it is detected that the current and voltage values of the component are not within the normal range, it indicates that the component is a problem. We can also replace the component for retesting.
After welding, we will definitely encounter the same problem, as well as the problem of the circuit board not working properly when the tool detects the problem. Many inexperienced people can only go and make a new board. In fact, it may be during component soldering that performance issues arise due to the inability of various components to coordinate with each other. When we encounter this situation, a single tool cannot meet our needs, but we can detect the range of voltage and current. Experienced engineers may be able to identify the location of the problem from inside, but they cannot guarantee which one is definitely at fault. So, the PCB can only replace the suspected faulty components in sequence until the actual faulty components are identified. All of the above explanations are related to electronic components. Of course, as a fixed point for electronic components, there are definitely problems with PCB circuit boards. A simple example is the location where copper leakage is treated on the surface. Due to manufacturing process issues, the circuit board may experience wire breakage during the corrosion process. When we encounter this situation, if we cannot repair the wire, we can only solve it with thin copper wire flying wire. When there are problems with the circuit board that are difficult to detect, inspection is very troublesome. During the inspection, special attention is needed. When you discover the problem, it will bring great joy and a sense of achievement. It's probably the same mood as programmers when fixing bugs, those who only go to debug and repair some problematic circuit boards.
