Alas, you say this LED screen looks quite intimidating, but if it gets angry... the black screen, the flower screen, and the flashes like a disco, will it be crazy? Let's talk about it today.​ ​Where do you like to give up this iron lump?​​? Don’t worry, even if you are a newbie who has just entered the industry, you will feel confident after reading this article!

1. Grasp the "life gate" first - the power system is in trouble

Friends who have worked on electronic devices know that​​Power is the heart of the device​​. If the LED screen suddenly turns off and doesn't work, it's probably because this guy is doing something. For example, the outdoor advertising screen installed in the mall last month went on strike after two hours of turning on the computer, and finally found out that the voltage of the distribution box was unstable - this is the same as fainting due to hypoglycemia!

There are three common types of mobs:

• ​​Loosen power cord connector​​: Just like the phone charging cable is poor, it is accurate to unplug the plug two or three times.
• ​​The power module burns​​: Especially in summer, the heat dissipation is not good and the blood vessels are bursting in minutes"
• ​​Excessive voltage fluctuation​​: If the electricity is riding a roller coaster, the screen will be punished

At this time, you have to learn the master's unique skill: use the multimeter to hit the power supply interface. If the voltage is lower than 4.5V, check the power supply line as soon as possible!

2. The most headache for the collective "strike" of lamp beads

To talk about the most delicate components of LED screens,​​The lamp beads are definitely ranked first​​! The floor tiles screen I made for the concert last year, and in just three months, there were several areas that looked like they had pockmarked. What do you think? The actor's high heels were too stomping, and he just shook the lamp beads!

There are tips for judging lamp bead problems:

1. ​​Single light does not light​​: It's probably the lamp bead "I'm dead"
2. ​​The whole piece is dark​​: The probability of a problem with the driving current is higher
3. ​​Color distortion​​: Maybe the red, green and blue three-color lamp beads are "divorcing the family"

Here is a big truth:​​Choosing screens with high density of lamp beads is actually more reliable​​! Like the mainstream inverted COB packages nowadays, their shock resistance is more than a little better than the old SMD. However, if the lamp bead is really damaged, the professional master can do it with a hot air gun in just one stroke. Don’t mess around with me!

3. The most deadly way to play "missing" in the control card

To talk about the most shattering fault,​​The control card will definitely be in the top three​​! It's like a computer motherboard burning, no matter how powerful your screen is, it will be useless. I remember that I installed a fence screen in the gymnasium, but it was not lit during debugging. Finally, I found that the firmware version of the control card was too old - good guy, this thing can still "recognize your life"!

When encountering a loss in the control system, remember these three tricks:

• Restart method: power off for half a minute before turning on
• Check the data cable: Just wipe it if the network cable connector is oxidized
• Upgrading firmware package: It's the same as updating the mobile phone system

Here we have to praise the current intelligent control system. For example, some equipment produced by major manufacturers can automatically monitor 16 parameters, and the fault prediction is as accurate as fortune telling. However, we ordinary users still do the most safe system maintenance regularly, just like car maintenance!

4. The most tricky daddy in signal transmission

Have you ever encountered this situation? The screen display looks like a smoky wind, and it’s normal and mosaic sometimes—80% signal transmission is causing bad results! The transparent window screen installed for the commercial center last year happened this time, and later it was discovered that the HDMI cable was gnawed by a mouse...

There are three steps to deal with signal problems:

1. ​​Check the source​​: Is the computer/player output normal?
2. ​​Follow the clues​​: Check the signal amplifier and distributor one by one
3. ​​The ultimate killing move​​: Try changing the new line directly

Now all high-end displays come with​​Signal redundancy design​​, the main and backup signals are automatically switched, just like the aircraft's twin engines, and the safety is excellent! However, you still have to pay attention to your daily use. Don’t let the wire bend more than 90 degrees. It is best to wrap it tightly with waterproof tape at the joints.

I want me to tell you, this LED screen is like a car.​​Three points rely on quality, seven points rely on maintenance​​! Pay more attention to heat dissipation and dust removal in daily life. Remember to cut off power on thunderstorms, so that it will not lose its chain at critical moments. Besides, reliable manufacturers now bring 24 hours of technical support. If you really encounter a problem, a call will come over and the professional team will arrange it clearly for you in minutes!

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