Hey, friends who are new to LED displays, have you ever stared at the big moving screen outside the mall in a daze? I secretly thought about it——​ ​For such a big guy, where is the "heart" that powers it? ​ ​Today we are going to talk about this matter, and I make sure you hear it clearly!

The power supply is not the "power bank" you think it is at all."

Let me correct a misunderstanding first. Many novices think of the power supply of LED screens as the batteries of electric vehicles. ​ ​In fact, its professional name is switching power supply module.​ ​, looks like a metal lunch box, specially designed to convert 220V AC power into DC power that can be used by the display screen. To give a practical example, the outdoor advertising screen we installed on a commercial street in a tropical country in Southeast Asia uses a military-grade lightning protection power supply. On thunderstorm days, thunder is crackling, but people can still light up steadily. The key is​ ​The power supply compartment has triple isolation protection​ ​, this design has also received international safety certification.

The location of the power supply depends on "Three Looks and Three Questions""

Finding the location of the power source is like playing an escape room. It mainly depends on these three aspects:

1. ​​Installation method​ ​: The column-type power supply compartment is usually in the base, just like the design of the fence screen in a stadium in Tokyo； It's wall-mounted, usually hidden in the top access opening, similar to the transparent window screen we made for a shopping mall in Seoul.
2. ​​Waterproof level​ ​: The power compartment of the outdoor screen will wear an extra layer of "raincoat". For the screen installed in the seaside project, the power supply position is 20cm higher than the regular model. This detail was improved after suffering from salt spray corrosion.
3. ​​Thermal layout​ ​: For the curved advertising screen we made for Singapore last year, the power modules were deliberately dispersed in four heat dissipation zones, and the box temperature dropped by 15%.℃

Teach you step by step how to locate the power supply

1. ​​Look at the structural drawings​ ​: Regular manufacturers will mark the location of the inspection opening on the frame. Just like each of our screens comes with a QR code electronic instruction manual, you can see the 3D exploded view by scanning it with your mobile phone.
2. ​​Touch temperature changes​ ​: Half an hour after powering on, lightly touch the back of the screen with the back of your hand.——​ ​Areas with obvious heat​ ​80% of them are power supply concentrated areas. This method is commonly used by our technicians when they come to do home inspections.
3. ​​Identify by listening to sounds​ ​: A good-quality power supply is basically silent. If you hear a "buzzing" sound, quickly contact a 24-hour technical team like ours. This experience is summarized from cases serving more than 110 countries.

Power supply location directly affects lifespan

Last year, there was a negative teaching material. The LED floor tile screen in a certain amusement park broke down frequently after only half a year of use. Later, when I took it apart, I found that the power supply was actually close to the cooling air outlet, and all the condensation water dripped on the circuit board! ​ ​Our products are much more particular in this area.​​：

• Outdoor screens come standard with silicone moisture-proof pads
• Quick release power supply tray for rental screen
• Transparent screen is made into an independent split power supply
  Just like the fence screen used in a stadium in Tokyo, the power module was specially placed in the manhole under the auditorium. There has been no power failure in five years.

Common Misunderstandings to Avoid

I have to talk about the most common pitfalls for novices:
× ​ ​I think the more concentrated the power supply, the better.​ ​ → In fact, a decentralized layout is safer (just like the distributed power supply design of our P4 curved screen)
× ​ ​Blind pursuit of high power​ ​ → It depends on the actual pixel density (all our products are equipped with intelligent power adjustment)
× ​ ​Ignore maintenance channel​ ​ → For example, our aluminum-magnesium-zinc box comes with a quick-release structure, and the power module can be replaced in 3 minutes.

Let me tell you, the location of the power supply may seem like a trivial matter, but it actually hides a big problem. ​ ​A good power supply layout should not only consider heat dissipation and waterproofing, but also facilitate maintenance.​ ​, just like the 8K large screen we made for a landmark in Shenzhen, the power supply compartment alone went through three iterations. Next time you see a shiny LED advertising screen, you might as well guess where its "heart" is hidden - maybe it is designed according to the methods we talked about today!

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