​​You definitely don’t know - last year, a shopping mall had a large LED screen installed and it was blacked out after three days. When the repairman opened it, he found that the power box was filled with milk tea! ​ ​ This matter sounds outrageous, but it reveals the most susceptible pitfalls for novices:​​Inappropriate power position selection​​. Today we will talk about this technical job and teach you step by step to avoid those "deadly" minefields.

1. Three taboo areas for power location

​​Lessons of blood and tears​​: The LED advertising screen of a supermarket chain is installed directly under the fire sprinkler head. As a result, water sprayed directly into the power bank during the fire test, and all 17 power boards were scrapped.

​​A must-have area​​：

1. ​​Water-intensive areas​​: Keep at least 1.5 meters away from the spray head/water pipe, especially for outdoor screens, avoid drainage ditches
2. ​​High temperature confined space​​: Don't stuff the power into the unventilated ceiling mezzanine. The ambient temperature exceeds 50℃ and the life will be cut in half.
3. ​​Personnel contact area​​: Installed above 1.8 meters above the ground, the safest place that naughty children cannot touch

2. Three common mistakes that novices make

​​Case warning​​: A guy tied the power supply directly to the steel frame of the display screen, but the screen vibrated and caused the screw to loosen, and the power supply was almost killed.

​​Error demonstration ranking list​​：

• ​​Iron frame nude styling​​: The power supply directly fixes the metal bracket, and the leakage risk is +100%
• ​​Players with stacked music​​: Three power supplies are stacked to reduce heat dissipation efficiency by 60%.
• ​​Flying Line Master​​: The power cord is suspended in the air and is not fixed. It can be used as a jump rope in windy days.

3. Golden installation rules: Power supply configuration for different scenarios

​​Tested data​​: If the fence screen of the stadium adopts a distributed power layout, the failure rate will be reduced by 83% compared to the centralized one.

​​Scene comparison table​​：

4. What happens if you connect the wrong line? Teach you step by step to distinguish positive and negative

​​Soul torture​​:What happens if the red line is connected to GND? Someone did this at an exhibition last year, and 38 unit boards were instantly smoked!

​​Life-saving wiring tips​​：

1. ​​Power off first and then do it​​: Live operation is equivalent to playing Russian roulette
2. ​​Color locking method​​: Red-VCC/Black-GND, just like traffic lights, you can't be messed up
3. ​​Multiple autopsy​​: Use the DC gear to measure the voltage before powering on, and it is safe to use 4.8-5.2V.

​​Special scene bonus​​：

• Three layers of waterproof tape should be wrapped in the wiring head in humid environment
• High temperature sites must use silicone wires that are resistant to 105℃.
• Use spring terminals to prevent loosening in vibrating areas

5. Hidden techniques to extend power life

​​Industry Confidential​​: Putting desiccant in the power bank can reduce the probability of short circuit by 73%.

​​Three maintenance axes​​：

1. ​​The method of cleaning dust​​: Use a brush to clean the heat sink every quarter, and the accumulated dust will be half of the heat dissipation efficiency of more than 2mm.
2. ​​Load balancing​​: Don't let a single power supply with more than 80% of the rated load
3. ​​Temperature difference warning​​: Install a temperature patch that costs ten yuan, and you will know it immediately after the temperature change.

​​Editor's opinion​​: I have seen too many people regard power supply as "second-class citizens", but in fact it is the lifeblood of LED screens. Remember when installing next time——​ ​Good power supply layout should be made to make the maintenance master scold me​​(Because there is no need to be repaired frequently at all). Instead of believing that sales are boasting, it is better to carry a round of performance testing with a universal performance. After all, if you choose the right power position, your screen can live longer than your ex's love.

for more product information and pricing, please contact us .