​​The beginning of soul questioning:​
Hey! Are you scratching your head against the flashing LED screen? I obviously wanted to change the promotional information, but I couldn’t find the trick after spending half an hour? Don’t worry, today we will talk about this problem of changing words that make people love and hate.

​​1. 3 things you must understand before changing a word​

1. ​​Log your "remote control"​
   The LED screen is not a TV, its "remote control" may be a USB flash drive, a mobile app, or a control panel hidden in a corner. First find out the equipment supportingControl card type——Is it a common USB drive direct plug-in model? Or do you need to connect to a professional-grade control card for your computer?

2. ​​The software version should be of equal status​
   Just like mobile apps need to be updated regularly, the control software must also be matched with the hardware. Have you ever encountered the garbled code on the screen after modifying the word? Eighty times it is used to use outdated software versions.

3. ​The higher the brightness, the better​
   The easiest pit when changing characters is the brightness setting. The indoor screen is adjusted to above 1200cd/m², and the storage is shaking. Remember​Indoor 800-1200, outdoor 4000-7500​​This golden range is the bloody and tears experience summarized by veterans in the industry.

​​2. 4 kinds of magical operations for changing characters (leave teaching and meeting)​​

​​▌ Method 1: Plug and Play USB​
​Tool preparation:​

• Ordinary USB drive (recommended below 32G)
• Manufacturer supporting software
• 5 minutes of patience

​Steps detailed explanation:​

1. Open the software click "New Program"
2. Enter "50% off for the whole venue" in the edit box (remember to choose a festive red)
3. Click "USB Download" to generate the configuration file
4. Unplug the USB flash drive and hit the interface behind the screen
   ​​Note!​Have you ever encountered a USB flash drive failure? Eighty percent of the time option is not selected. Here is a tip: format the USB flash drive into FAT32 format, and the success rate will be doubled directly.

​Method 2: Remote control of mobile phone​​
Now even the air conditioner can be controlled by mobile phones, so the LED screen cannot be lagging behind. However, it depends on your control card that does not support Bluetooth/WiFi.

• Android users: Download the corresponding APP (don’t search randomly in the app store, ask the manufacturer for a special installation package)
• Apple users: Some models need an additional Bluetooth adapter
  The actual test uses mobile phones to modify promotional information. It only takes 47 seconds to edit and upload the screen, which is much more convenient than running back to the office to turn on the computer.

​​▌ Method 3: Hard-core operation of computer software​​
Suitable for old players who want to change complex dynamic effects:

1. Connect the computer and LED screen with HDMI cable or network cable
2. Open the software and enter the password (try common passwords such as 168 and 888)
3. Play with various special effects in layer management:
   • The text scrolling speed is adjusted to "medium speed"
   • Add a fireworks to the "new product launch" to the entry animation
   • Change the background color from dead white to soft beige
     ​Key reminder:​ Remember to click "Preview" first after modification, and don't click "Send" directly! I've seen too many people skip this step and the entire screen turns into a mosaic.

​​▌ Method 4: Control the physical buttons of the card​
Some old-fashioned screens still retain physical buttons:

• Press the "Menu" key to enter settings
• Select "Program Management" on the arrow keys
• The "Confirm" key enables editing mode
  Although the operation is like the old antiques of the last century, it is better to be stable and reliable. This trick can help you when the network is unstable during thunderstorms.

​​3. First aid guide for changing the word and overturning​

​​▌ Symptom 1: Font overlapping dance​

• ​Possible reasons:The screen parameters are set incorrectly
• ​​Solution:​ Rescan the receiving card to check whether the resolution is set to 1920×1080

​​▌ Symptom 2: Show half of the text​​

• ​​Three steps for self-examination:​
  1. Is there any box in the editing area selected?
  2. Is the font size exceeding the screen width?
  3. Is the memory of the receiving card full (try restart)

​​▌ Symptom 3: I don’t even recognize the color mother​​
Have you ever encountered red turns pink and green turns yellow? Check it out quickly:

1. Is the cable interface oxidized?
2. Is the power supply voltage stable or not
3. Is there any water vapor in the lamp bead?
   If you can't handle it yourself, you can directly call the manufacturer's technical support - now regular manufacturers are on standby 24 hours a day.

​​4. A master who changes his character secrets privately​

1. ​​Automatically change words​
   Set up an automatic switching program at 2 a.m., and the next day, the door will be open to a new advertisement, so as to avoid staying up late.
2. ​​Weather forecast linkage​
   Connect an API interface to automatically display "Driving carefully when the road is slippery on rainy days", which can increase the shopping mall passenger flow by 18%.
3. ​​Multi-screen synchronization update​
   Chain store owners must learn! Use the mass sending function to modify the content of 100 screens at the same time, and the efficiency will take off directly.

​​A last few nagging words:​
Let’s change the word, whether it’s difficult or not, it’s simple or not. The key is to understand the temper of your own equipment. Novice recommends that you start by changing your USB flash drive. By the way, you can regularly backup and set parameters to the network disk. If the control card is exhausted, you can still recover with one click. Next time I encounter the problem of changing words, remember to take a deep breath and recite it silently three times: "Stay steady, I can do it!"

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