Alas, old men! Have you stared at the moving large screens in the mall and stared at them? I kept murmuring in my heart - Who is giving orders behind this thing? Today, let’s lift the LED screen skirt. Oh no, it’s the shell, and take you to find the “brain” hidden in the dark!

1. The regular hiding place has long been outdated

​​Do you think the control board is squatting behind the screen? ​ ​ That's all the old calendar five years ago! The manufacturer that is fun to play now, hiding the control board is like playing hide and seek:

• ​​In the suspended ceiling mezzanine​ ​: Last year, a shopping mall suddenly had a black face. The repairman searched for a long time, but the control board was cat-studded in a three-meter-high decorative board above his head.
• ​​Floor tile screen base​ ​: The control system of the dance floor tiles screen is hidden in the aluminum alloy base mezzanine and has a waterproof rubber ring
• ​​Hollow column structure​ ​: The stadium fence screen is the most terrifying. The control board is stuffed into the support column. It looks like an ordinary steel pipe from the outside.

To be honest, it’s not for fun to hide. ​ ​IP65 protection level control box​ ​, you must be prevented from splashing water, withstand vibrations, and be convenient for maintenance. It’s like putting a mobile phone in your pocket, you must be able to prevent falling and take it out easily.

2. See here for hidden secrets

​​Why do you have to hide it? ​ ​ There are so many ways here:

1. ​​Heat dissipation attention​ ​: Have you ever seen a control board sticking next to the exterior wall air conditioner? They use the east wind to dissipate heat, which is more effective than installing ten heat sinks.
2. ​​Signal transmission​ ​: If the screen is more than 20 meters away, you must use an optical fiber adapter box. This is like the WiFi repeater at home. You have to find a location with less load-bearing walls.
3. ​​Anti-theft requirement​ ​: The control box of open-air screens is now popular to be welded to the foundation, and the keyhole must be opened with special tools.

To give a real case: the control panel of the floor tiles screen of a concert was actually hidden in the track slot of the stage elevator! This design can be both anti-step and can also be used as a natural heat sink with tracks. Do you think it will never stop?

3. Three hidden methods that maintenance workers fear the most

​​These Tibetan methods are simply against humans​ ​! When you meet, you have to scold your friends:

• ​​Hiding underwater​ ​: The control box of the fountain screen actually uses submarine-level sealing technology. You have to drain the pool first when opening a box.
• ​​Dynamic hiding​ ​: The control panel of the arc-shaped screen is packaged in five rotating brackets, and the mechanical structure must be locked first for each maintenance.
• ​​Voice control mechanism​ ​: The latest smart screen is to pop up the control panel when shooting a specific rhythm, just like opening a vault in a movie

But then again,​ ​Modular design​ ​Now is the kingly way. Just like Lego bricks, which one is broken and which one is replaced. The smartest design I have ever seen is that the control board is divided into eight small modules, distributed on the back of the screen, connected by a magnetic suction interface, which is as convenient as removing chocolate blocks during maintenance.

4. How do you judge your position?

​​Teach you a few tricks to position without disassembling the screen​​：

1. Follow the power cord: The control board is usually no more than 3 meters away from the power interface, and focus on checking the cable bends
2. Listening to sound position: When the control panel with buzzer is turned on, it will "drip" and slowly move your ears against the screen frame.
3. Look at the heat dissipation holes: regular mesh openings, 80% of which are hidden behind them
4. Check the manual: Regular manufacturers will use lightning symbols to mark the location on the drawings, just like treasure maps

Last time I helped my friend find the control board, but I found it hidden in the fire hydrant decoration cabinet! This designer's brainstorm is really a pity if he doesn't shoot spy movies.

If you ask me to tell me, finding a control board is like falling in love. ​ ​There are often no visible places, but there are surprises in unexpected corners.​ ​. Next time I see the LED screen, I might as well take a look at it - maybe there is a control system worth 100,000 yuan hidden behind that ordinary decorative strip! But I have to remind you that you don’t have to owe you to poke the gulp. This thing is very delicate, and if you touch it, it will be much more cost-effective than dismantling the home appliances!

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