I received a call from the bar owner in the middle of the night the day before yesterday: "The display screen cannot be turned off, and now the entire screen is as hot as an oven!" "This is already the third crazy boss this month. Did you know? ​ ​Repair fees caused by incorrect shutdown can account for up to 40% of the total price of the screen.​ ​, today I will teach you how to operate it step by step.

​​1. These shutdown operations are destroying the screen​​

1. ​​Pull out the power cord directly​ ​(Like suddenly cutting off a running person)
   Last year, the LED wall in a shopping mall burned out the driver IC, and a single repair cost 28,000 yuan.
2. ​​The door is locked when the remote control is pressed​ ​(The system has not completed self-test at all)
   A hotpot restaurant owner burned out the power module and spent 6,500 to replace it.
3. ​​No power on rainy days​ ​(Rainwater poured into the power box)
   The screen of a gym in a coastal city was short-circuited and the repair list was 12,000 yuan long

​​Key points:​ ​ A sudden power outage will cause the residual voltage of the capacitor to breakdown the components, just like a sudden tire blowout.

​​2. Six-step method for shutting down the computer correctly​​

1. First press the [Standby Button] on the remote control and wait for 10 seconds (let the screen signal stop transmitting)
2. Turn off the power to the video processor (disconnect the signal source like turning off a faucet)
3. Wait 3 minutes after observing that the screen is completely black (to dissipate the internal residual heat)
4. Turn off the air switch of the distribution box (open first and then main switch)
5. Check the temperature of the heat dissipation holes (the back of your hand must be pressed against it to avoid getting hot)
6. Press the [Dehumidification Button] more often on rainy days (especially when returning to the south)

​​Measured data:​ ​ Standardized operation can reduce the power failure rate by 73% and save RMB 80,000 in three-year electricity bills.

​​3. Life-saving Guide in Special Scenarios​​

▶ ​​In a hurry after the show? ​ ​
Use a smart socket with delayed power-off function to set a 5-minute buffer period
▶ ​​What to do during a thunderstorm? ​ ​
Installing a three-level lightning protection module in the distribution box costs 900 yuan and guarantees 100,000 yuan of equipment.
▶ ​​Not using your phone for a long time? ​ ​
Power on for at least 1 hour every month to prevent capacitor aging (the same as a car battery running out of power)

There is a real case: the organizer of the music festival executed the​ ​Pre-shutdown program​ ​, successfully avoided the damage caused by lightning strikes and saved 170,000 yuan in maintenance costs compared to the next door.

​​Exclusive data:​​
Industry research shows that​ ​The service life of LED screens with smart screen off system is extended by 2.3 times​ ​. For those models with 1920Hz refresh rate + IP65 protection, because they have built-in voltage monitoring chips, the three-year failure rate is only 1/6 of ordinary screens. Before shutting down your phone next time, remember to let the screen "calm down". This habit is better than buying insurance.

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