Two days ago, Lao Wang asked me to complain that the shopping mall advertising screen he spent 80,000 yuan to buy had a color block gap after using it for three months. If you have to put this matter on you, would you be so angry that you jumped? Don’t worry, today we will teach you how to find a reliable color electronic screen. You can take at least five pitfalls after watching it.

1. Online price comparison vs direct purchase by manufacturers, which one is more cost-effective?

Last week, I discovered a strange phenomenon when I helped chain supermarkets purchase -​​The P4 full-color screen with the same parameters, the price difference between the three channels is Wuling Hongguang​​! There are so many ways here:

• ​​E-commerce platform​: Suitable for small-size basic models, but be careful of "false parameters" (a popular product on a certain platform is no longer waterproof, and the actual test will cause black screen when it is raining)
• ​​Manufacturer’s exhibition hall​: Priority is given to physical exhibition halls in the Pearl River Delta Industrial Belt. The LED factory density in Bao'an, Shenzhen is higher than that of milk tea shops.
• ​System Integrator​: Suitable for customers who need "hardware + content + operation and maintenance", but the commission of middlemen is generally 18%-30%

There is a cold knowledge: if a truly capable manufacturer, there must be an aging test area in the workshop. The hardcore player is the one who can see three layers of anti-rust coating when shining the seams of the box.

2. Five hard-core indicators lock in good goods

1. ​​Don't be fooled by brightness​
   If the indoor screen is less than 800cd/m², it means you are talking lies with your eyes open! But the brighter the better. The 7500cd/m² screen in a pedestrian street was fined 30,000 yuan at night.

2. ​​Refresh rate has secrets​
   1920Hz is the watershed in the industry, and videos below this number are all ripple. I will teach you a way: turn on the phone camera and face the screen, and you can see the scanning line directly pass.

3. ​​Waterproof is not about numbers​
   There are also tricks in IP65 certification! The outdoor screen that can stand the test must have a silicone seal + drainage hole design at the joints. Take a bottle of mineral water and pour it on it at 45 degrees. The water droplets must roll down like lotus leaves and dewdrops to be considered qualified.

4. ​​Power consumption path​
   Don’t believe in the “energy saving 40%” of the promotional page, it depends on the common driving plan. The same 10㎡ P4 screen, the total plan for the monthly electricity bill can save a cleaning lady’s salary.

5. ​​After-sales team is more than sales​
   Manufacturers who dare to promise 24-hour responses have at least 20 engineers rotated in the technical center. The focus is on whether there are overseas service points. Mature markets such as Japan, South Korea, Southeast Asia are touchstones.

3. The trick behind the price fog

Recently, I found a slutty operation:​Renovation with second-hand lamp beads​​! The initial quotation of this screen is 35% cheaper but it can only be used for half a year. Teach you three tricks to break the situation:

• ​Check the batch of lamp beads​: If you only write "imported chips" and do not specify models, 90% of them are refurbished goods
• ​Touch the heat sink temperature​: After working for 2 hours, if the heat sink exceeds 65℃, retreat quickly
• ​​About the original customs declaration form​: Screens in mature export markets must be equipped with CE and CCC certifications, and these certificates cannot be fake.

Real case: A scenic spot bought a low-priced screen with cheap prices, and the maintenance fee in two years is enough to buy three new sets of equipment. On the other hand, customers who choose regular manufacturers can save 48% of their five-year operation and maintenance costs, which is a lesson learned from blood and tears.

4. Pit-proof killing skills

• ​​Contract plus this life-saving clause​
  "Free replacement of faulty modules during the warranty period, including labor and travel expenses" - If you miss the second half, you can charge you three thousand door-to-door fees if you change the lamp bead

• ​​Three things to do for acceptance​

  1. Continuous white screen oven 72 hours
  2. Play racing video to detect drag and shadow
  3. Test the minimum brightness in the early morning (no thought of passing the review if it is below 800cd/m²)

• ​​Beware of deposit routines​
  Some people require that the 8% final payment be kept as a "quality deposit", but in fact, the money will be deducted on the grounds of "human damage" in the second year. It is best to talk about the adult payment maintenance package, and the risks are transferred to the manufacturer.

The old man in the industry said it to be heart-wrenching

Looking for color electronic screens is not cheaper than anyone else, it depends on the comprehensive cost of ten years. Why do those large factories with monthly output of 10,000 square meters dare to sign a ten-year warranty? Because the box is made of aviation aluminum and the circuit board is treated with three-defense treatment, these hidden costs are the hard power. Next time you are inspecting, remember to use a vernier caliper to measure the thickness of the box - less than 12mm, turn around and walk and don’t look back!

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