Have you done this kind of thing too? Squatting behind the five-meter-high LED box, holding a mobile phone flashlight and looking for the model label, sweat beads dripping down the safety helmet, as if they were at an archaeological site? Last week, an electrician in the mall complained to me: "If you change the power module, you have to find a famous brand for half an hour, so the manufacturer can't put a prominent position?" Today we will come to "Everyone will find fault" and dig the elusive model labels on the LED screen to the bottom.

(There is a hidden rule in the industry: whether the position of a famous brand is well designed, directly exposing the manufacturer's professionalism)

1. A general search for hiding points

LED screens in different scenarios, famous brands are like masters playing hide-and-seek:

​1. "Identity card" on the back of the box​
The design logic of most fixed installation screens is "see when you open the cover":

• ​​Aluminum rear cover lower right corner​(90% of manufacturers choose this golden triangle)
• ​2cm above the power supply module​(Prevent the heat dissipation holes)
• ​​The splicing area snaps inside​(The position that must pass when disassembling and assembly)

Last year, the circular screen of a gymnasium made a joke. The famous brand was actually stuck in the bracket mezzanine that needed to be removed to see 12 screws. The maintenance team almost dismantled the entire screen into parts.

​2. "Little trick" on the side of the border​
Creative screen types often choose these tricky positions:

• ​​The grooves of the curved surface of the curved screen​(You have to use a reflector to see it)
• ​​Waterproof glue strips for floor tiles screen splicing seams​(When uncovering, you must use a hot air gun to soften the glue)
• ​​Laser printing of transparent screen glass interlayer​(You have to use ultraviolet rays to show your appearance)

Here is a tip: touch the seams of the border with your hands, and 80% of the famous brand positions with obvious concave and convexity are.

​3. "Electronic ID card" in the control system​
High-end models will have double marks:

• ​​The startup screen displays dynamic QR code​​(Scan the code to read the complete parameters)
• ​​The device information page in the management system​​(Including production batch and quality inspector number)
• ​​Laser etching of the sending card chip(You can see clearly under a microscope)

The rental screens we made for a music festival are even more amazing. The famous brand is made into NFC tags, and the 3D installation drawings will pop up after touching the phone.

2. Why are famous brands so particular?

When you see this, some friends may ask: "Isn't it just a label? You can't just post it casually?" As an experienced driver who has been in the industry for ten years, you must tell you the tricks behind it:

1. ​​Tamper-proof requirements​: Important parameter areas should be covered with anti-counterfeiting film (tearing will leave traces)
2. ​​Convenience of maintenance​: The range that an engineer can reach with one hand shall not exceed 60cm height
3. ​Appearance integrity​: Cannot destroy the visual effects of the screen (especially transparent screen)
4. ​​Waterproofing requirements​: Outdoor screen brand must be hidden under the dripping eaves

The most tricky thing is that I have seen a copycat screen. The famous brand was actually stuck on the back of the cooling fan. After three months of operation, it was roasted into white paper by hot air.

3. Advanced skills: What should I do if I can’t see famous brands?

Don’t panic when encountering these difficult situations. I will teach you a few unique skills:

​​Scenario 1: The brand is covered with secondary spray paint​

• Wipe gently with 95% alcohol cotton pads (don't use Tianna water, it will wipe off the syncopation together)
• Difference in thickness of scanning paint surface in infrared detector
• Contact the manufacturer to retrieve the factory records (regular enterprises have databases)

​​Scenario 2: Outdoor screen brand weathered and fell off​

• Check the SN code of the sending card chip (usually corresponding to the box number)
• Test the batch number of lamp beads (some models can reverse the production date)
• Reverse model for measuring box size (Error no more than 5mm)

​​Scenario 3: Frequent disassembly and assembly of rental screens lead to wear​

• Check the spare labels on the inside of the airbox (professional rental companies will reserve them)
• Read electronic files in the control system (password permission required)
• Check the color encoding of the power cord connector (different power corresponds to different color marks)

There is a classic case: the mobile stage screen of a concert was soaked in rain, and the famous brands were all blurred. Later, with the fluorescent mark on the power supply module, the matching model was found from more than 30,000 accessories.

4. Details to pay attention to when selecting equipment

Based on the pitfalls you have struck over the years, I would like to give three advice to novices:

1. ​​Look for famous brands when inspecting goods on site​(Manufacturers who can’t even make labels well, can the products be reliable?)
2. ​​Take photos and keep electronic files​​(Build an exclusive album on mobile cloud disk)
3. ​3D installation diagram is required​(There are detailed labels for regular enterprises)

Don't believe in the nonsense of "the parameters are written in the instruction manual". When you want to buy replacement parts, you will know that without real brand comparison, the probability of buying wrong accessories is as high as 70%.

Next time I encounter the problem of finding famous brands, remember this formula:
"Touch, look, and scan,
Don't miss the back of the border.
Electronic identity is more reliable.
When choosing a factory, look at the label. "

If you really encounter a "invisible brand" that you can't find, don't hesitate - quickly contact the original technical support. After all, if a manufacturer dares to hide famous brands so deeply, it is probably only their own people who know how to solve this mystery.

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