1. Who should I look for when installing LED screens in a small shop? Understand these tricks first!

Oh, recently, Lao Wang, the owner of a milk tea shop in the corner, complained to me: "I want to get an LED screen to attract customers. I found hundreds of manufacturers online, with prices ranging from 3,000 to 30,000 yuan. This water is too deep, right?" This reminds me of the painful experience of Brother Zhang in the barbecue restaurant last year - the marquee screen he bought for 8,000 yuan, and the color block appeared in three months. The repair fee is more expensive than buying a new screen!

​​Pop cold water first​: Don’t think you can buy a small screen at will! Many so-called "economic" products on the market use recycled lamp beads and second-hand driver chips. I will teach you a simple way to judge: use your hands to shake quickly in front of the screen after powering on. If you see obvious shadows, turn your head and leave!

II.​Three must-see life gates for purchase​

1. Don't be fooled with hardware parameters

• ​Pixel spacing​: P4-P6 is enough for a 5-meter viewing distance of milk tea shop (don't believe in the "smaller, the better" set)
• ​​Refresh rate ≥1920Hz​​: Videos below this number are like card discs. I have seen a screen broadcast advertisement for a fried chicken shop with my own eyes. The heavy shadows can be seen even when the fried chicken legs are
• ​​Brightness adjustment​: The indoor screen 800-1200cd/m² is the most suitable, but it is too bright and dazzling (there is a clothing store screen that is as bright as a searchlight, so customers dare not enter the door)

​​Please give a chestnut​​: We specially used the time-sharing brightness control for the 40-inch screen installed in the chain convenience store - we automatically adjusted to the highest brightness at 7 a.m., and reduced to 30% at 10 a.m., saving 40% of the electricity bill!

III.​Supplier inspection three tricks​​

Step 1: The workshop must be seen with your own eyes

Let me teach you some ruthless tricks:

• To see​Automatic patch machine​Is it imported goods (the failure rate of domestic second-hand equipment is high)
• Touch​The corners of the box​, direct pass of cutting hands (the light leaks in the later stage of rough craftsmanship)
• Check​Aging test record​, serious manufacturers will make 48-hour continuous roasters

​Industry insider​: Some small workshops dare to fake quality inspection seals, so it is best to suddenly attack and see the production site!

Step 2: Be kind to the certification certificate

Must see:

• ISO9001 certification (focus on whether it is the latest annual review)
• CE/ROHS certification (export-level quality is reliable)
• Waterproof test report (at least IP54 protection in milk tea shops)

Last year, a dessert shop suffered a great loss - cockroaches entered the gap in the screen body and caused a short circuit. I found that there was no insect-proof design during maintenance!

Step 3: After-sales service to the bottom

Soul Torture Three Combos:

• How many years is the lamp bead warranty? (The one who dares to protect for five years is the real boss)
• Is there a charge for upgrading the control system? (Some manufacturers rely on this to cut leeks every year)
• What should I do if the screen is black at 10 o'clock in the evening? (The response of 24 hours is worth considering)

​​Real comparison​​: Two companies quoted fast food restaurants. Family A was 2,000 yuan cheaper but charged 800 yuan maintenance fees every year. Family B was 1,500 yuan expensive but had five years of full maintenance. The smart boss chose the latter.

IV.​Don’t step on these pitfalls!​​

1. ​​Low price trap​: "P2.5 small screen sells for 2,000 yuan?" This price is not even enough for the lamp beads!
2. ​​Finished label parameters​: Take a brightness meter to test on site (the bags of 3000cd/m² are actually only 800)
3. ​​Share the concept​: Take LED backlit LCD screens as real LED screens (these are not the same thing at all)
4. ​Interface Trap​: You must try to connect your own device (I have encountered a weird screen that only recognizes Android but not Apple)

I recently heard a joke: I actually have to scan the QR code to change the content before I can change the content. Isn’t this the “screen screen” advertising space?

It is not difficult to buy a small screen. Remember three tips:​First measure the venue and then focus on the parameter certificate, and finally put the after-sales terms into the words​. Special reminders to shop owners: Don’t buy three-no products for cheap price. At that time, the loss of screen repair and shutdown will be real money! If you are not sure next time, take this guide to inspect the goods and ensure that you can find a good screen that is both affordable and durable!

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