Seeing the newly installed advertising screen, the milk tea shop owner Zhang scratched his head in a hurry - he bought it according to the model online, why is the actual effect so much worse? This kind of situation is so common for beginners to get into pitfalls. Today I will teach you​ ​Three first aid plan​ ​, even if you buy the wrong model, you can bring about a life.

​​Lesson 1: Recognize the hidden password in the model​​
Numbers such as P3 and P4 are not randomly marked, but represent the pixel spacing. But many people don't know​ ​The same P3 model is also divided into indoor and outdoor versions​ ​It's like buying clothes from the wrong season and forcibly wearing them. Last month, they helped to renovate the cafe, but they mistakenly installed the indoor screen under the canopy, and the color shift occurred before halfway through the rainy season. Later, I added a waterproof kit and replaced the driver IC before I rescued it, which cost 30% of the budget.

Common Model Remedy Comparison Table:

​​The second move: magical modification of the drive system​​
Don't rush to throw the screen! Last year, I handled a case of shopping mall atrium. The rental screen they purchased was only 960Hz refresh rate, and the short videos were all ripple. pass​ ​Replace the receiving card with phase-locking loop technology​ ​, and the refresh rate is increased to 3840Hz, and the picture becomes silky instantly. Here is a tip for saving money: keep the original power supply and light board, and only upgrade the control system, which can save 60% of the cost.

Three elements of hardware transformation:

1. ​​Power load matching​ ​: The power of the new controller should not exceed 80% of the old power supply
2. ​​Signal protocol compatible​ ​: Ensure support for HDMI 2.0 or DP1.4
3. ​​Structural heat dissipation transformation​ ​: Every 10% increase in power consumption, heat sink must be installed

​​The ultimate solution: modular replacement​​
If you really can't save it, you have to undergo "surgery". Like the seafood market, the static screen is installed by mistake, and the screen is stuck in PPT when switching. Finally adopted​ ​Column-by-column replacement method​ ​, retain the usable box frame, and only replace the display module and driver chip. This solution saves 45% of the cost than replacement of the entire screen and shortens the construction period by 2/3.

Comparison of data before and after the transformation:

• Brightness uniformity increased from 68% to 92%
• Power consumption decreased by 22% (new lamp beads have improved efficacy)
• Maintenance costs are reduced by 300 yuan per month (standard module replacement)

The owner of Youjia gym is smarter. He dismantled the eliminated P6 screen into light beads and made into creative lighting walls, which instead became a check-in point for internet celebrities. So say​ ​Model error may not be a disaster​ ​, the key is to find the right transformation idea. Next time you encounter a display problem, don’t rush to spend money to change it. Find a master who knows what you know. Maybe you will be surprised?

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