PCB News - What are the troubleshooting methods for PCB board?

What are the troubleshooting methods for PCB board?

The production of the PCB board is not difficult, the difficulty lies in the troubleshooting after the production is completed. So, what are the methods to find faults on the PCB board?

CommonPCB circuit board failures are mainly concentrated on components, such as capacitors, resistors, inductors, diodes, triodes, field effect tubes, etc. The integrated chips and crystal oscillators are obviously damaged. The more intuitive way to judge the failure of these components can be observed by eyes. There are obvious burn marks on the surface of the electronic components that are obviously damaged. Such failures can be solved by directly replacing the problematic components with new ones.

Of course, not all electronic component damage can be observed with the naked eye. Professional inspection tools need to be used for maintenance. Commonly used inspections include: multimeters, capacitor meters, etc. When it is detected that the voltage or current of a certain electronic component is not within the normal range, it indicates that there is a problem with the component or the previous component, directly replace it and check to see if it is normal.

Sometimes when we give the components on the PCB board, we will encounter the problem that the detection fails, but the circuit board does not work normally. In this case, in many cases, the performance of the components may be unstable due to the coordinated work of the components during the installation process. In this case, you can try to judge the possible range of the fault based on the current and voltage, and minimize the fault area as much as possible. The only way is to try to replace the suspicious component until the problem component is found.

The above are all problems with electronic components. Since the PCB circuit board is the foothold of the components, the circuit board failure must also exist. For example, due to the production process of the tin-plated part, there may be disconnection problems during the PCB corrosion process. In this case, if you can't make up the wire, you can only use a thin copper wire flying wire to solve it.

In short, in the process of troubleshooting PCB board failures, we must focus on finding and solving problems effectively.

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