"Why does my LED screen always splash? Obviously the parameters are correct! "Last week, I saw a repairman squatting behind the advertising screen in the mall. When I got closer, I heard that the transformer was installed in the wrong place. Let's talk about this today​ ​The heart of the LED screen​ ​——Where should the transformer be plugged into so that the large screen can live a more comfortable life?

1. Transformer hiding rules: choose the position like finding a partner

You must have seen a transformer installed in a distribution box, right? It's like hanging an air conditioner with an external unit in the bedroom——​ ​Power costs and short life​ ​! According to industry data,​ ​63% of display failures are caused by improper transformer position​ ​. Remember these three golden site selection principles:

1. ​​≤3 meters away from the screen​ ​: Just like charging a mobile phone, you cannot use wireless charging on partition walls, the voltage loss exceeds this distance to 15%
2. ​​Avoid the high temperature zone​ ​: Don’t be neighbors with major heating companies (such as amplifier equipment). Every time the ambient temperature rises by 10℃, the lifespan will be reduced by half.
3. ​​Waterproof and dustproof are the bottom line​ ​: When installing outdoors, choose IP65 protective boxes. Seaside projects also need to be equipped with anti-salt spray coating.

For example, a certain brand installed a fence screen in a Tokyo stadium, and the transformer is hidden in the ventilation shaft under the seat - it not only avoids the audience's trampling, but also relies on natural wind to dissipate heat, and has zero failure rate in three years.

2. Installation and pit avoidance manual: Small details that the master will not say when he beats him to death

These three things are most likely to fall into:

• ​​Wire selection​ ​:Don't think that the thicker the wire, the better! Within 5 meters, 2.5mm² copper wire is enough, and it must be thickened to 4mm² if it grows.
• ​​Fixed method​ ​: Have you ever seen transformers tied with cable ties? The joint will loosen if it vibrates for a long time! Bolts + shock absorbing pads must be installed
• ​​Heat dissipation reservation​ ​: Convection holes should be opened up and down the box, and 15cm of heat dissipation space is left on the top, which is the same as the computer host.

There is a lesson learned from blood and tears: the floor tiles screen of a music festival last year was buried directly under the carpet. As a result, the audience stepped on it during the performance - the screen was black! Later it was changed to​ ​Quick release aluminum magnesium zinc box​ ​, the maintenance efficiency is directly doubled.

3. Maintenance tips: Secrets to make the transformer live for 5 years

Do you think it's done after pretending? ​ ​Daily maintenance is more important than installation​​：

1. ​​Monthly physical examination​ ​: Use an infrared thermometer to scan it, and check immediately if the temperature difference is >8℃
2. ​​Dust removal cycle​ ​: Places with a lot of dust (such as construction sites) are cleaned once every 20 days, and shopping malls can be relaxed to 3 months.
3. ​​Rainy season protection​ ​: Humidity exceeds 65%RH? Go on the dehumidifier quickly and don't wait for the circuit board to grow mushrooms

Here is an abnormal operation:​ ​Don't close the main gate! ​ ​ Maintaining the standby state is more power-saving than frequent switches, which is the same as car idle speeds more fuel-saving than frequent ignition.

4. Soul question: Can the transformer be stuffed into the screen?

Many people asked: "How convenient is it to directly integrate the transformer into the LED box? "It's like putting the engine into the cockpit——​ ​Technology is feasible, but the risk is too high​​：

• ​​Electromagnetic interference​ ​: The transformer magnetic field will make the display signal dance "Snowflake dance""
• ​​The heat dissipation deadline​ ​: The temperature of the confined space can easily break 70℃, and the chip is burned in minutes
• ​​Repair nightmare​ ​: If you change the transformer, you have to remove the entire screen, and the labor cost is more expensive than the equipment.

Now the solution to high-end screens is​ ​Distributed power supply​ ​——Disassemble the large transformer into multiple small modules, and distribute it around the screen like a grape hanging. This not only ensures the stability of power supply, but also reduces the risk of single point failure.

Editor's opinion:
Building an LED screen is like raising a child, and the transformer is its "heart". Of course, the problem of black screens and splashing screens is that the heart is not in the right position. Remember these eight characters:​ ​Close but not sticky, hidden but not boring​ ​. The next time you install the screen, spend half an hour to plan the transformer position, and the maintenance cost is enough for you to buy a new mobile phone!

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