​​"Could it be that my LED large screen switch can be invisible? "​ ​ When he helped his relatives debug the store sign last week, he stared at the display screen and scratched his head. Today, let’s turn the mysterious switch position upwards. After seeing it, you can touch the switch even with your eyes closed!

1. "Commander in the Control Cabinet"

Why hide here?

• ​​Safety first​ ​: IP65 protection level, you are not afraid of short circuits in heavy rain
• ​​Centralized management​ ​: The switch is often squeezed together with the power manager and signal distributor
• ​​Case shooting​ ​: The switch inside the cabinet of a shopping mall landmark screen was marked with red tape and "touching is strictly prohibited", but the cleaner tore it as garbage...

​​Operation Guide​​：

1. Find metal cabinet doors (usually with lock holes or password disks)
2. First look at the upper left corner when opening the counter——​ ​80% of the switches are installed under the heat dissipation port​​
3. Check the ship-type switch with lightning logo (don't touch the emergency button with yellow logo! )

​​Industry cold knowledge​​：

• High-end screens use magnetron switches, and can be activated by shaking the special key twice.
• Have you encountered a touch switch failed? Try tapping the lower right corner with your knuckles

2. Hidden skills of remote control

Don't underestimate this plastic lump

• ​​Scene adaptation​​：
  ▫️ Stage floor tiles screen: Press and hold the ▲ key for 3 seconds to wake up
  ▫️ Transparent window screen: ●key + ▼ key combination switching mode
  ▫️ Sports fence screen: Continuously click the * key to relieve sleep

​​Life-saving trick​​：

1. Emergency plan for losing the remote control——
   ➢ Mobile phone camera detection method: Press any key to see if the infrared light is flashing
   ➢ Strong light interference restart method: use a flashlight to shine the receiver head directly for 10 seconds

​​Tested data​​：
Among the 327 equipment repaired last year,​ ​41% of "switch failures" are actually because the remote control is out of power​ ​. You can save 500 yuan on-site money by changing a battery!

3. Mobile terminal control new posture

Mobile phones are universal switches

​​Three-step networking​​：

1. After the screen is powered on, click the lower right corner 5 times, and call up the WiFi hotspot
2. Enter the initial password to the hot spot (usually 12345678)
3. The browser enters 192.168.1.1 into the control page

​​Advanced gameplay​​：

• ​​Timing switch​ ​: Set to automatically sleep at 2 a.m., save 30% power
• ​​Abnormal alarm​ ​: Automatic pop-up window reminder after the current surge by 10%
• ​​Permission rating​ ​: The boss uses fingerprint lock, but the employee only has the right to adjust the brightness

​​Lessons of blood and tears​​：
A hot pot restaurant gave control permissions to all waiters, and the display screen played "The most beautiful boss lady" every day...

Personal opinion time

After twelve years of working in this industry, I discovered a strange phenomenon:​ ​85% of the switching problems are caused by "black under the light""​ ​! Last year, the main screen of a concert was out of control and the director was so anxious that he wanted to disassemble the screen. But it turned out that the backup switch was stuck in the crack in the box. Now the new smart screen is starting to be developed​ ​Voiceprint recognition switch​ ​——You can wake up by shouting a secret code. If this thing becomes popular, it will probably be a lot of repair disputes.

​​Friendly reminder​ ​: Don’t panic when the full screen is black. First, touch if there is a slight heat in the lower right corner of the screen. Whenever there is residual heat, ninety percent of the signal is broken rather than the switch is broken. Remember, find the right place to save money, and dismantle randomly and lose money!

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