Aido VCD's after-sales technician's face suddenly darkened, which was very unsightly.
As the after-sales technicians of Aido VCD, they have been repairing Aido VCD for several years.
Of course, we know that there are flaws in the design of the VCD motherboard, as Yang Ling just thought, because this design flaw will cause the voltage of the internal electronic components to be unstable and easily broken down by current.
The consequences range from the need to replace small components such as capacitors to the main board being burned.
It's just that currently Aiduo VCD manufacturers don't have a better solution, and they don't have the money to recall motherboards that have already been produced, so what they sell really depends on luck.
If, like this lady, the motherboard burned out just a few days after buying it.
The after-sales staff will say: "Your motherboard is flooded. It's your own problem. We don't guarantee it here."
If others insist, vcd has never seen water at all.
The after-sales staff will say: "The working environment is too humid and you did not pay attention to protection, so there is no warranty."
Anyway, the after-sales personnel always have excuses to shirk all their own responsibilities.
After all, the internal mechanism of VCD is very unfamiliar and complicated to many people, and the after-sales staff basically cannot find fault with such deception.
But they didn't expect that Yang Ling could see other problems at a glance.
"What are you talking about? Do you understand technology?"
The after-sales staff immediately became unhappy and quickly scolded me.
"This motherboard was obviously short-circuited due to water intrusion, and the entire circuit board was burned out. How could it be a voltage problem?"
"There is a transformer at the end of the plug of every VCD. How can there be a problem with the voltage?"
The overall voltage of the motherboard and the operating voltage of the internal electronic components are not the same thing at all.
Yang Ling chuckled and said: "Everyone works. You get a few hundred yuan a month, and we also get a few hundred yuan a month. If your family spends one or two months' salary, there is something wrong with the purchase.
I went to after-sales service for my product and still couldn’t get it repaired. What do you think?”
The lady was grateful when she saw that Yang Ling seemed knowledgeable and stood up for herself.
The woman said: "After I bought my things, I put them on the TV cabinet. This VCD has never been exposed to water, and my home lives on the fifth floor, which is also very dry. How could the circuit board be short-circuited due to exposure to water or moisture?
"
Now there were more people watching the fun.
After the sales, seeing so many people here, I was afraid that it would affect my business, so I quickly said: "Are you a professional or am I a professional? I don't know what nonsense you are talking about!"
The lady was a little anxious and opened her mouth but didn't know what to say.
Yang Ling opened the broken VCD, exposed the motherboard, pointed at the flaws in the motherboard design and said to the after-sales staff:
"There is a problem with your wiring. There is no voltage regulator in front, and the position of the voltage regulator here is incorrect. It is easy to break down the capacitor and cause a short circuit. If you want to route the wiring like this, then..."
When Yang Ling said this, everyone suddenly understood.
Everyone knew at a glance that Yang Ling must be a professional, otherwise he would not have found out the problem immediately and pointed out the problem accurately.
Yang Ling directly exposed the lies of the after-sales staff from a very professional perspective, which made the after-sales staff quite embarrassed.
Yang Ling sat down on the maintenance counter and said to the lady: "Give me your VCD."
Only then did Yang Ling take a closer look at this lady. She was in her 30s and had an intellectual beauty.
To be precise, at first glance, this lady's appearance seemed ordinary, but she became increasingly attractive.
This is the so-called intellectual beauty or temperament beauty.
And judging from her dress and appearance, she doesn't look like someone from a small county town.
The lady was stunned for a moment, but handed over the VCD.
The after-sales technicians became uneasy when they saw that Yang Ling was taking the lead.
"Don't cause trouble here!"
"That's right, what are you doing living here?"
Yang Ling said to the onlookers: "You just told this lady that the circuit board has been completely burned out. There is no way to repair it except to replace the circuit board. If you replace the circuit board, it may cost seven or eight hundred yuan, so it's not as good as
Buying a new VCD. Buying a new VCD costs more than 1,000 yuan. You have said this before."
The after-sales technician didn't say anything, but the lady said, "They said this."
Yang Ling nodded again and said: "I just saw the circuit board in detail. The circuit board was indeed burnt due to unstable voltage, and the components were broken down, but it is not impossible to repair. You have tools and parts here.
I can try to repair it."
Yang Ling showed a very kind smile to the lady and said, "Is it okay if you let me try it?"
The lady nodded and said, "Then I'll trouble you."
While the after-sales staff tried to find a way to drive Yang Ling away, the onlookers were booing.
"Let someone else try it."
"That's right, no matter what you say, let others try it. You asked this lady to replace the motherboard. This little brother said that there is no need to replace it at all, he can repair it."
Under the "supervision" of so many people, the technical staff had no choice but to report to the boss quickly.
Yang Ling did not repair the circuit board immediately, but first observed the direction of the circuit board components and copper wires.
A few electronic components were indeed burned out, but the damage to the entire board was not too serious.
Yang Ling found a piece of white paper on the desktop and drew a circuit diagram on it with a pen.
Jiangcheng County is just a small county, and the repair centers in department stores are not as rich in spare parts as those in large cities such as Shenzhen and Shanghai.
Therefore, Yang Ling's purpose in drawing the drawings was to restore the motherboard's functionality with the most ingenious wiring and the fewest parts.
And it is aimed at the inherent design flaw of the motherboard - the voltage instability of electronic components.
Yang Ling can use several resistors and use the voltage dividing wiring method to protect electronic components that are sensitive to voltage and protect the motherboard from being burned.
This thing is easy to say and very relaxed.
However, the requirements for the design and wiring of circuit diagrams are very high, and it is difficult to achieve it with the current design level of Xia Guo integrated circuits.
Yang Ling was already in this industry before he was reborn. Lingtian Technology he founded has the best IC (integrated circuit) designers in the world.
Yang Ling is the boss of these designers. Of course, he is very familiar with gadgets like VCD.
Most of the technicians at Aido's after-sales service points have no academic qualifications at all, and they have become monks halfway. A small number of them may have gone to the after-sales center in Jiangzhou City for training for a period of time.
Their technology for repairing VCDs is limited to replacing entire parts.
It is really difficult for them to ask them to redesign the wiring and re-solder the electronic components on the old motherboard.