Alas, have you ever encountered such crazy moments? The LED screen suddenly felt like it was garbled and stuck, and the parameters were adjusted so quickly that it was so busy that it finally wanted to smash it and buy it again? I helped the mall handle such a case last week - their activity screen suddenly showed that the countdown was stuck at 00:00, which scared the person in charge almost had a heartache. Actually, at this time​Restore the factory settings is like restarting the life key​, find the right position and press it a few times to bring you back to life!

1. When do you need to poke this "reset key"?

Don't rush to find a screwdriver, you have to confirm whether it really needs to be reset.​​This function is like a mobile phone that is restored to factory, and is a nuclear weapon-level operation​​, suitable for the following three situations:

• ​​The parameters are chaotic and become yarn balls​​: For example, the brightness is set to dazzling and the refresh rate is outrageous
• ​​The system error code is flooded with the screen​: There are unintelligible fault codes such as E001 and F020
• ​​Second-hand equipment takes over the transformation​: The former user has set a password lock function

The dance floor tiles screen installed for the bar last year made a joke. The DJ changed the color to Death Barbie pink, and the customer thought he had entered the children's channel. Finally, press and hold the setting key for 10 seconds before returning to normal. Is this magical enough?

2. Where are the rebirth buttons for different devices hidden?

You have to see clearly with your eyes wide open here,​The reset keys of different models are more elusive than Sun Wuzi’s seventy-two transformations​​：

1. ​​Outdoor advertising large screen​：

   • First find the maintenance compartment for the back panel (usually with waterproof glue plugs)
   • Use a hex wrench to unscrew the hatch cover, which contains the red reset key.
   • Press and hold the indicator light for 5 seconds and then flash three times

2. ​Conference room splicing screen​：

   • There is a pinhole button on the back of the remote control (don't poke it randomly with a toothpick)
   • Press and hold "Menu Key" + "Power Key" at the same time for 10 seconds
   • The progress bar will run on the screen

3. ​​Interactive floor tiles screen​：

   • Release the corner protective cover (be careful not to scratch the panel)
   • Clip the hidden toggle switch with nail clippers
   • Turn left and hold for 3 seconds

The most bizarre case I handled last week - the window screen of a brand store, the reset button actually hits the four corners of the screen at the same time! This operation is like playing arcades, almost causing the customer to collapse.

3. Teach you the five-step resurrection technique step by step

Don’t panic! Following this flow chart is more effective than reading the manual:

• ​Step 1​: Power off! The power must be completely disconnected (the main board will be burned when operating with live)
• ​Step 2​: Find the reset device (refer to the above location list)
• ​Step 3​: Long press and hold the activation button (5-15 seconds, depending on the model)
• ​Step 4​: Wait until the indicator light starts to flash
• ​Step 5​: Power on again and wait for the music to turn on

Here is a trick: the equipment we customized for customers all have voice prompt function, and if you successfully recover, you will say, "Master, I'm full of blood and resurrect." The screen in the hotel banquet hall suddenly spoke, scaring the cleaning lady to the point of throwing the mop.

4. Three life-saving moves that can't be done

If you press it for a long time and don’t respond, try these three tricks:

1. ​Check the power supply timing​: Some large screens need to turn on the control system first and then turn on the power supply
2. ​​View version information​: Older devices may need to upgrade firmware first
3. ​Play the combination buttons​: Press and hold "up+confirm+power" at the same time may have a strange effect

The case I handled for the gym last month was very interesting - their large screen of the room had to be slapped at the bottom left and upper right corners at the same time to wake up the reset mode, which was like a martial arts film. Is this a brain-minded enough?

5. My heartfelt advice

After working for seven years of technical support, I am most afraid of two types of customers: one is to press the reset button randomly to play the game, and the other is to dare not touch it if you don’t dare to touch it. Last year, the screen of the event in a shopping mall was black. The duty manager held on for three hours before he dared to call for help, but he missed the golden sales period.

​​This function is like a car airbag, which is not used normally and can save lives at critical moments​​. It is recommended that you record the reset key position in the device file, and it is best to paste a foolproof label. When we provide training for customers, we will also record operation videos and save them to the USB flash drive, and deliver them with the equipment like first aid manuals.

After all, no matter how advanced the technology is, it must be controlled by people. Next time you get angry with the screen, don’t rush to stomp your feet and curse. Find the right position and press it twice. Maybe you can witness the miracle?

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