How do you diagnose when there is a problem with the circuit board?_Shenzhen StarLight Industrial Development Co., Ltd.

How do you diagnose when there is a problem with the circuit board?

source:Other information release time:2023-02-07 Hits: Popular:PCB Assembly company: Share:

　　As you can see, this is a very open question, so I immediately replied: "I will guess first;" Next, the main examiner invited me to continue to explain, and of course I was happy to say. I explained that there are different ways to solve the problem like a circuit board failure (here we assume that you are not equipped with a circuit board tester with a specific test program at hand). In fact The board, find obvious clues such as loose lines (omissions), scorched marks around the resistance, capacitance explosion, stress residual welding point, etc.

　　This sounds a bit stupid, but again and again, you will be lucky to find some obvious clues. After the first visual inspection, an option is to carefully check the possible faulty agencies, check components, test wiring, and observe the signals until the fault point isolates. But the problem of this strategy is that the process is boring and time -consuming.

　　Another alternative-also what I personally recommend — is to observe the system failure in the external world, and then start the WAG (Wild-Ass Guess) random guessing according to your observation.

　　This method is not as stupid as it sounds. You are using your rich experience to quickly move towards a area where possible problems; if you are right and find a problem correctly, you can save yourself for yourself A lot of time and energy; if you guess wrong, you will not waste too much time or energy, and you will also exclude at least one possible problem.

　　However, at a certain stage, you may need to check more WAG results, and then you return to the analysis model of careful, slow and stable progress, and energy consumption.

　　What? Then? Of course I passed the interview ... What kind of stupid question!

　　However, the above is not the point; I think of those, because I just watched a series of interesting "ON-" Call) article, the slogan of this series is "biting those hands to feed IT", a fixed column every Friday, and a strange task that IT technicians have shared their strange tasks at strange time and strange places.

　　I have read two very interesting stories so far. The first is about a computer that will be restarted by the owner to the toilet; the second is that the network of a theater is on the audience to arrive and prepare to lead the audience. When you enter the ticket, hang the line.

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