Standing in a shopping mall and looking up at those colorful advertising screens, have you ever wondered where these cool devices come from? Last week, my cousin just bought a hot pot restaurant and wanted to rent an LED screen for the opening event. As a result, the price difference between the three suppliers was 20,000 yuan. Each one said that they were the most professional. Today we will talk about the most confusing thing for novices - what should we pay attention to when renting an LED screen?

Renting a screen is like opening a blind box and requiring a factory inspection

Last month, I helped a friend conduct a factory inspection. Both suppliers were ISO9001 certified, but the quality inspector from Factory A used a vernier caliper to measure the distance between the lamp beads, while Factory B directly pressed the entire screen into the pool. What does this mean? ​ ​The certification is just the basic threshold, the production details are the real work.​ ​. Reliable suppliers must meet at least three hard indicators:

1. ​​An automated workshop with a monthly output of over 10,000 square meters​ ​(Only those with high production capacity dare to take urgent orders)
2. ​​Whole process traceability system​ ​(The production date of each lamp bead can be found)
3. ​​24-hour online technical team​ ​(You can still find people even if the screen is black in the middle of the night)

A gym owner suffered a loss when the screen he rented developed color differences after half a year of use. When he took it apart, he found that the driver chip was a mixed product from three batches. Now that I have learned a lot, I can directly inspect the factory.​ ​Material batch management system​ ​, the real skill is whether the codes of chips, lamp beads, and power supplies can be matched.

Word games in parameters

"The refresh rate of our screen starts at 1920Hz! "Nine out of ten sales are like this. But you have to ask:​ ​Is it laboratory data or field measured values?​ ​? The most incredible test method I have ever seen - use a mobile phone to record the screen in slow motion, play a racing video, and count the number of tire tracks that are ghosted. A really high refresh rate should be as easy as cutting tofu with a knife.

Brightness adjustment is more interesting. The outdoor screen rented by a shopping mall was rated at 5,000 nits, but it seemed to be foggy at noon. Later found out​ ​Peak brightness can only be maintained for 20 minutes​ ​, the actual continuous brightness is only 3800. Now experts are asking to see it​ ​Six-hour brightness curve​ ​, just like testing the battery life of a mobile phone.

Installation and maintenance is the magic mirror

There were many hot searches on the rental screen for performing during the heavy rain at last year’s music festival. This case hides three key technologies:

• ​​Quick release structure can be disassembled and assembled with a wrench in 10 minutes​​
• ​​IP65 waterproof, can be soaked in water for two hours​​
• ​​Brightness adaptive response to environmental changes within 5 seconds​​

The purchasing director of a chain restaurant told me the secret:​ ​Ask the supplier to provide a customer list that is more than five years old​ ​, call directly to ask about the frequency of repair reports. For a truly durable screen, the number of failures within three years should be in single digits.

personal opinion time

Renting an LED screen is like finding a partner based on family tradition. ​ ​Only manufacturers that dare to let you go to the workshop to count screws are worthy of your trust.​ ​. I especially admire those real businesses that write after-sales clauses into their contracts, such as "free replacement of lamp beads if their degradation exceeds 15% within three years." This kind of confidence is more reliable than any sales rhetoric.

Finally, a little trivia: What cutting-edge technology can do now​ ​Brightness compensation​ ​, automatically adjust the current to maintain brightness according to the service life. Just like mobile phone battery health management, this kind of black technology hidden in the details is the key to widening the gap. Next time you inspect the product, remember to ask: "How much brightness will this screen have left after three years of use?" "The answer may make you re-understand what value for money is.

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