Bosses who are planning to buy LED displays, take note! Last year, a restaurant chain brand had to repair and repair 20 door screens because it chose the wrong supplier. In the end, it cost an extra 110,000 yuan. Today we will break it down and talk about how to find reliable channels and save real money.

​​1. The pitfalls and pitfalls of procurement channels​​
Do you think offline physical stores are more reliable? But last year’s industry survey showed that 37% of after-sales disputes came from offline transactions. Focus on these three points:

• ​​Watch actual factory video​ ​: Ask the other party to have a video connection to see the production workshop. Real manufacturers have automated production lines.
• ​​Check certification number​ ​: The ISO9001 certificate number can be verified on the official website, and the fake certificate will be exposed as soon as you check it.
• ​​Touch sample seams​ ​: The gap in the box of regular products can be controlled within 0.5mm, and nails cannot be inserted in.

Don’t just look at sales rankings when purchasing online. The top three stores on a certain e-commerce platform are actually warehouses shared by three vest stores. remember to​ ​Ask the seller to provide cases in the same area​ ​, for example, in Guangzhou, you can find suppliers who have worked on the Pearl River New Town project.

​​2. Word games in parameters​​
The price of a screen with the same P3 pitch can differ by more than 2 times. The key is to grasp these details:

• ​​Brightness attenuation value​ ​: An outdoor screen is a good product if its brightness retention rate is ≥90% after half a year of use.
• ​​Power supply brand​ ​: Ask directly for the specific model. The failure rate of counterfeit power supplies is 6 times that of the brand.
• ​​Protection level​ ​: A true IP65 screen, it can still work normally after being washed with a high-pressure water gun for 10 minutes.

There is a real case: a gym bought a batch of low-priced indoor screens, but found that the grayscale could only display 12bit, and the dark training clothes of members turned into black shadows on the screen. remember​ ​Low brightness and high gray technology​ ​It's a watershed moment, a screen that can display 16-bit grayscale, so that dark details will not be lost.

​​3. 5 actions that must be done during acceptance​​

1. Take a slow-motion photo of the screen with your mobile phone. Screens with a refresh rate of ≥1920Hz cannot produce water ripples.
2. If the white screen is played continuously for 2 hours and the temperature difference between the heating points is >10°C, please return it immediately.
3. Use a light meter to illuminate the four corners of the screen. If the brightness difference exceeds 15%, it is considered unqualified.
4. Check the back of the box. Regular products will have a laser-engraved factory number.
5. Disassemble the random box and check whether the internal circuits are neatly routed and have secondary reinforcements.

Don't believe the so-called "sampling inspection report". In an industry scandal exposed last year, one manufacturer sent the same screen for testing ten times. want​ ​Witnessing workers randomly unboxing and inspecting​ ​Just count.

​​4. Hidden costs of after-sales service​​
Those who promise "lifetime warranty" are basically liars, and all regular manufacturers are​ ​Three-year machine warranty + ten-year maintenance support​ ​. Key points to ask:

• Whether the fault response includes night time periods
• Is the stock of regular accessories sufficient (control card/power module)?
• Is there any additional charge for software upgrades?

A shopping mall in Southeast Asia suffered a loss - a service fee of RMB 50,000 was charged for upgrading the screen system, which was more expensive than the original purchase price saved. Smart buyers now demand​ ​Written into the contract: free system upgrade within ten years​​。

In the final analysis, buying an LED screen is like assembling a decoration team - finding a partner who understands technology and is honest is much more important than lowering the price and saving three melons and two dates. Next time you see a quotation, please read the warranty terms and test report clearly before signing. After all, the screen is easy to install but difficult to remove.

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