Method for quickly detecting PCB board failures, detecting PCB board, shenzhen PCB manufacturer, circuit board design, PCB design,professional inspection tools, multimeters, capacitor meters, shenzhen PCBA manufacturer, shenzhen SMT factory, PCB assemblyPCB circuit board failure
Method for quickly detecting PCB board failures

Making a PCB board is not a simple process to complete the board, just drill a hole and put the components on it. PCB production is not difficult, the difficulty lies in the troubleshooting after the completion of the production. Whether it is an individual enthusiast or an industry engineer, it is quite a headache for the PCB board to encounter problems during debugging, just like a programmer encounters a BUG.

Common PCB board problems include circuit board design, damage to electronic components, short circuit, component quality, and the line on the PCB board is broken.

These faults are mainly concentrated on the components, such as capacitors, resistors, inductors, diodes, transistors, FETs, integrated chip and the crystal oscillator etc., and the method of judging the fault of these components can be observed through the eyes. The surface of electronic components with obvious damage has obvious burning marks. Such a failure can be solved by directly replacing the problem component with a new one.

Of course, not all electronic components can be visually observed, such as resistors, capacitors, and triodes. In some cases, damage cannot be seen from the surface and requires professional inspection tools. Commonly used inspection tools include: multimeters, capacitor meters, etc., when it is detected that the voltage or current of an electronic component is not within the normal range, indicating that there is a problem with the component or the previous component, and directly replace it and check to see if it is normal.

If the component is broken, it can be detected whether it is observed by eyes or by instrument. However, sometimes when we test the components on the PCB, we will not detect the problem, but the board will not be normal. Many newcomers don’t know what to do with this kind of problem. They can only re-do a board or buy new one. In fact, this situation is often caused by components in the installation process, due to the coordination of various components, there may be perfomance instability.

In this case, the instrument can no longer help, you can try to judge the possible range of the fault according to the current and voltage, try to narrow down, experienced engineers may be able to quickly determine the fault area, but can not 100% sure which component is broken. The only way is to try to replace the suspect component until the problem component is found.

The above mentioned are actually the problem of electronic components. Of course, since the PCB circuit board is the foothold of the components, the circuit board failure must also exist. The simplest example is that there may be the line on the PCB board is broken. In this case, if you can't make up the line, you can only solve it with a thin copper wire.

PCB circuit board failure is not very obvious, it is very troublesome to check, and in the process of investigation, there will be a concentration of focus, after the problem is found, there will be an inexplicable sense of accomplishment.