Have you experienced this crazy moment? Last month, I helped my friend debug the stage LED screen. Six technicians turned around the screen for half an hour but couldn't find the HDMI interface. This matter made me understand that finding an interface can really delay big things.

Where is the interface hidden? Revealing common locations

​​Focus on​ ​: The interface position design of LED screens in different scenarios is huge:

• ​​Outdoor advertising screen​ ​: Usually hidden in the waterproof compartment at the bottom of the screen, you must first open the protective cover with lock
• ​​Rental splicing screen​ ​: There is a reserved port on the back of each box, but it may be blocked by adjacent boxes after assembly
• ​​Floor tiles interactive screen​ ​: The interface area is often located at the four corners of the screen, and a rubber plug is used to protect the dustproof

Last year, there was a joke on the main stage of a music festival. The installation team did not notice that the interface of the floor tiles screen was hidden in the grooves on the edges, and almost prying the entire screen to find it. Finally, the manufacturer provides remote guidance, using the endoscope tool to find the interface from the gap, wasting three hours of labor.

Interface positioning skills for special scenarios

When encountering these three situations, you have to be careful:

1. ​​Arc screen​ ​: The interface is generally concentrated in the area with the smallest radian to avoid bending the cables
2. ​​Transparent screen​ ​: 86% transmissive model, the interface is mostly designed in the frame concealer
3. ​​Waterproof screen​ ​: Model with IP65 protection, with screw fastening device on the outer layer of the interface

​​Tested data​ ​: The interface design with smart logo can improve installation efficiency by 40%. Some high-end models have fluorescent marks next to the interface, which can be quickly positioned even if it is dark.

The circular screen installed in a shopping mall in Tokyo last year is a front textbook. They installed magnetic numbered plates in each interface. During the later maintenance period, the engineer looked at the drawings and found the target interface in 10 minutes, saving two hours of labor costs than the traditional method.

Emergency solutions that cannot be found in the interface

If you really encounter a situation that you can't find it, try these three steps:
① Use the back of your hand to strode the edge of the screen slowly. The temperature is obviously low and the metal interface area may be
② Use the mobile phone flash to light up diagonally to observe the difference in the reflection of the screen border
③ Contact the manufacturer to retrieve the three-dimensional structure diagram of the equipment and accurately locate the coordinate points

​​Lessons of blood and tears​ ​: A team once violently dismantled the border and found the interface, but the internal circuit was damaged, and the repair cost was 80,000 yuan. In fact, many control systems now support wireless screen projection, and temporary emergency response is more cost-effective than hard interface search.

In recent years, I have discovered a rule: the more hidden the interface design, the higher the protection level. Just like a certain outdoor advertising screen in Seoul last year, hiding the interface in a hatch door that requires special tools to be opened. Although it took 20 minutes to install it, it has never rained in two years. So, it’s hard to find an interface, and you still have to spend the time you should spend. If you often come into contact with different models, it is recommended to build an interface location database, and then look for it next time!

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