I helped my friend arrange the wedding scene last week, which was so crazy! The LED screen on the stage background clearly looked very bright, and the newcomer's face turned green like spinach as soon as he stood up. My friend was so anxious that he jumped: "Where did you buy this broken screen? "I believe that many friends who purchase LED screens for the first time have stepped on similar pitfalls. Today we will understand who should I find to buy this thing.

​​First understand the three life gates of the display screen​ ​. Don’t listen to merchants fooling around “imported chips” and “military quality”, focus on these three parameters:① ​ ​The refresh rate must be ≥1920Hz​ ​(Otherwise, it will be full of ripple when taken)② ​ ​Brightness should be adjusted automatically​ ​(The jump starts at 800 indoors, and you can’t watch it if you are less than 4000 outdoors)③ ​ ​Protection level is at least IP65​ ​(You don’t have to worry about being in the rain or the sun). When I installed screens for the gym last year, a supplier boasted about how waterproof it was, but the screen directly performed the "water curtain cave" during the rainy season. Do you think it's annoying?

​​How deep is the procurement channel​ ​? There are three main ways now: 1. E-commerce platform (the price is transparent but the quality is mixed) 2. Building materials market (you can see the physical objects but the model is old) 3. Directly connect with factories (high cost performance but you have to be good at choosing). The key point is here——​ ​You must watch the real video of the production workshop​ ​! Serious manufacturers have automated assembly lines, such as those who wear white gloves in the display video, and the quality is basically not bad. Remember to let the seller provide it​ ​72-hour aging test report​ ​, just like buying a used car, you need to look at the maintenance record.

​​There is a mined area hidden in the installation process​ ​. Do you think it's all done if you buy a good screen? Last month, I helped the bar owner supervise the worker and found three fatal problems: 1. The steel structure load-bearing is 30% less (almost caused a disaster) 2. The wind direction of the cooling fan is installed (causing local high temperatures) 3. The signal line is not shielded (snowflakes flash from time to time). Here is the key point:​ ​The construction team must have special equipment installation qualifications​ ​! These three items must be tested during acceptance:

• Temperature changes of 4K videos for 8 hours continuous playback
• Color consistency for viewing from different angles
• Data recovery speed after emergency power outage

To give a real case - the circular screen of a South Korean e-sports hall has withstood typhoons, circuit surges and even the audience throwing water bottles in three years, because they wrote in black and white in the contract.​ ​Door-to-door physical examination twice a year​ ​. Is this money worth spending?

​​After-sales guarantee, don't make verbal promises​ ​. The most tricky thing I have ever seen is a shopping mall where the screen has broken down with half a year control card, and the manufacturer actually said that "the accessories have been discontinued." Therefore, the contract must state:① ​ ​Core accessories for ten years​​ ② ​​24-hour remote diagnosis​​ ③ ​​4-hour emergency response​ ​. Reliable manufacturers will build cloud monitoring systems to detect problems such as unstable voltage and color temperature offset in advance, just like a car's fault warning.

Suddenly I remembered something - the transparent screen installed in a Singapore shopping mall last year, and the operator specifically asked the manufacturer to provide it​ ​Five-year brightness attenuation curve​ ​. Otherwise, professionals do professional things, this trick will scare the counterfeit factory away.

If you ask me, buying an LED screen is like a blind date. You can’t just look handsome or not. You have to find out the details, verify the correctness, and see if you can live a stable life. Before purchasing next time, you might as well rent it for a few months to try it out, after all, seeing is true. By the way, when you encounter a vague quote, you should withdraw quickly. The serious manufacturers dare to slap the configuration list on your face. This is the real gold and not afraid of fire.

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