Ouch hey! Have you ever encountered such crazy moments? The LED screen I just bought suddenly faded, and the repairman asked: "What version of this screen is yours? "The question was confused on the spot! Today we will look at this problem that makes Xiaobai headache——​ ​Where is the LED screen version hidden​​？

(Down the voice) I secretly tell you the truth: Last year, a newly installed transparent screen in a shopping mall did not find out the firmware version, so I cut the model's face into eight pieces when broadcasting the advertisement! Do you think this is a pitfall?

​​Cheat One: Control the "Identity Card" on the card"​​

1. ​​Sticker treasure hunting method​​
   Squat down and look at the iron box behind the screen, 90% of the control cards are posted​ ​Silver label​ ​. Just like the IMEI code on the back of the phone, version numbers such as V3.2 and V5.0 are usually printed here. There is a cold knowledge: you can also scan the QR code to check the production batch!

2. ​​Circuit board detective​​
   If the label is torn, don't panic. Disconnect the control box and look at the circuit board. ​ ​Steel printing next to the main chip​ ​(For example, GD32F407VET6) is the key clue. You can reverse the versions supported by checking the chip model on the official website.

3. ​​Software mind reading method​​
   Connect to the computer to open the control software, and it is hidden in the "system information"​ ​FW:V2.1.8​ ​Such a treasure. Some advanced screens can also display driver IC versions, which is the golden key to diagnosing failures.

​​Cheat 2: Seventy-two changes in the firmware version​​

Take a chestnut:
The P2.5 screen videos in a supermarket chain have always been stuttered, and the smoothness is directly increased by 40% after upgrading the firmware! It turns out that there is a bug in the decoding of the old version H.265, which explains this——​ ​Firmware is the invisible operating system for the screen​​。

Check the version three-piece set:

1. When booting, staring at the startup interface, flashing​ ​Bootloader version​ ​Don't miss it
2. Find in system settings​ ​Firmware Version​ ​(Don't click "upgrade now"! )
3. Use the USB flash drive to plug in the receiving card, and the automatically pop-up upgrade prompt will expose the current version

​​Cheat 3: The software version of the trick​​

Did you know? With the same control software, V17.2 and V17.3 may be different.​ ​20% color reproduction​ ​! The "rainbow pattern" accident in the floor tiles screen at a concert last year was caused by the mismatch between the software version and the light bead driver.

Check the version of the magic operation:

• Don't rush to open the software, look at the upper right corner​ ​Pinion Icon​​
• Press F1+F3 to bring up the engineer menu, which is hidden here​ ​Driver library version​​
• Find "decoder information" in the player settings, which is related to whether 4K video can be played smoothly

(Knock on the blackboard) The key point is:​ ​Software, firmware, and hardware trinity​ ​! Just like braised pork, you need to pay attention to three layers, and only when the version matches it, it is color, fragrance and taste.

​​It's time to ask and answer! ​ ​

Q: What happens if the version information cannot be found?
A: At the very least, the screen will be stuttered, and at the worst, the driver IC will be burned! Last week, a customer forced the V5 firmware into a screen that only supports V4, and the repair fee is more expensive than the screen.

Q: Can new and old versions be used in a mixed way?
A: Don’t! The worst case I have ever seen: the new receiving card is equipped with an old sending card, which causes the entire screen to look like an old TV snowflake screen. It took three days to find the cause of the disease.

Q: How often should I upgrade?
A: It depends on the intensity of use! The shopping mall screen is recommended to increase once every six months, the stage rental screen will increase every quarter, and the outdoor screen must be checked after heavy rain and typhoons.

I want me to tell you, this LED screen version is like the engine number of a car——​ ​Usually can't see it, but it appears immediately if something happens​ ​! Next time you encounter a screen tantrum, please understand the version information first and ensure that the maintenance master looks at you with admiration. By the way, choose to bring​ ​24-hour remote diagnosis​ ​The manufacturer is particularly important. After all, no one wants to squat at a height of ten meters in the middle of the night to check the version number, right? Do you think this is the reason?

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