Hey, why is it so difficult to buy an indoor LED display now? Last week, my friend spent 30,000 yuan to buy the P3 screen in the building materials market. After installing it, he found that the brightness is less than 800cd/m². The content during the day is like a fog. What's even more amazing is that after three days of call after sales, no one answered the phone - this money was spent more unfairly than Dou E! Let’s talk about it today. How can we buy good goods that are not cheating in Xinping?

Three deep pits that novices must step on

1. ​​Particle virtual label play text game​: Mark "Maximum brightness 1200cd/m²", the actual normal state can only reach 600
2. ​​Sold as a new product​: The screw hole in the box has traces of twisting, and the power module production date is two years apart
3. ​​The installation team is a temporary worker​: The wiring is not sleeved, the signal is like dancing a square dance

Last year, a training institution suffered a big loss. The screen I bought said it was a 1920Hz refresh rate, but the result was that the videos were all ripple. Later, I went to a professional master to check and it was only 960Hz in fact, and I only returned the money after half a year of protecting my rights. So,​Don’t just look at the quotation for buying a screen, the manufacturer must issue a test report.​。

This is how hardcore parameters are viewed

​​Don’t trust the sales mouth!​​ Remember these five key points:

• ​​The brightness should be adjusted intelligently​​: The indoor 800-1200cd/m² interval is the most practical (refer to web page 5)
• ​​Point spacing is selected by scene​: P2.5-P3 is used in conference rooms, and P4 is enough for shopping mall atrium (web page 1)
• ​​Thermal system with temperature control​: Touch the back of the box and work for 2 hours without getting hot.
• ​​Signal interfaces need to be redundant​: HDMI+DP dual backup, you can continue to play after one interruption
• ​​The warranty should not only depend on the years​: It is necessary to clearly include labor costs and spare parts costs

A restaurant owner complained to me that the screen he bought did not pay attention to the protection level, and the kitchen fume penetrated, causing 23 modules to turn yellow. Now I have learned it well and I will choose the model with IP54 dustproof. After using it for more than a year, the screen is still the same as the new one.

The price fog is broken layer by layer

Here is the real comparison data for the group:

A typical case in a gym last month: a bad brand screen bought in cheap pictures, but the screen suddenly turned black when the member jumped to the exercise, and the coach stayed in awkwardly on the spot. Later, I changed the model with intelligent brightness adjustment, and now even the pictures in the afternoon are so clear that they can count the sweat beads.

Invisible service is the lifeblood

1. ​​Does the installation team have an aerial work certificate?​? (The shopping mall lifting is seven or eight meters high at any time)
2. ​​Can after-sales service be managed in counties and towns?​? (Don't let the entire screen break and you have to transport it back to the provincial capital for repair)
3. ​​Training packages, not teaching packages,​? (Even the cleaning lady has to turn off the screen power supply)
4. ​​Is the spare parts library complete enough?​? (Don't let customers wait for the accessories for two months)

The most outrageous thing I have ever heard of: a manufacturer promised to respond 24 hours a day, but the technician lived 200 kilometers away and failed in the middle of the night before someone came. Now smart buyers require you to look at the distribution map of the service outlets, and there is no direct pass for the station within a radius of 50 kilometers.

The editor's heartfelt suggestion

Picking an indoor LED screen is just like buying groceries-
✅ ​​View "Physical Examination Report"​: Brightness and color gamut test data of CNAS detection chapter should be included
✅ ​Touch "musculoskeleton"​: The box joint is ≤0.5mm, and there are no burrs on the screw holes
✅ ​Try "response speed"​: The serious direct elimination of 4K videos
✅ ​Check "household registration files"​: ISO9001 is the bottom line, export certification adds points

Recently, I discovered a new routine: some merchants sold P4 screen as P3.91, and the price tag was immediately 30% higher. Let me teach you a trick - take out your phone camera and turn on the professional mode, adjust the shutter to 1/1000, and shoot the screen without a black scanning line, which is really a high-speed brush.

After all, buying an indoor LED screen in Xinping is like finding a partner, with both appearance (display effect) and connotation (stable quality). Remember, a good screen is a real brother who can accompany you through the epidemic for three years and withstand the 12-hour round every day. It is not an embroidered pillow that falls out after three days of opening!

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