Why do my outdoor advertisements always show incompletely?

Boss Zhang, who has just entered the industry, has been so anxious recently - he spent a lot of money to install the LED screen, and he couldn't see the picture clearly on sunny days and noons. This is actually typical​ ​Brightness not up to standard​ ​question. Data shows that​ ​When the brightness of the outdoor screen is less than 4000cd/m², the screen recognition rate under direct sunlight decreases by 60%.​ ​. Here is a simple judgment method: stand 10 meters away at 12 noon, and if you can't see the LOGO outline clearly, check the equipment parameters as soon as possible.

Three tricks to find out the root cause of the problem

When I was helping customers with maintenance last week, I found that 80% of the display abnormalities occurred in these three links:

1. ​​Control system version​ ​: Devices before 2020 may not support HDR content
2. ​​Power distribution​ ​: Local dark zones will appear if the power per square meter is less than 200W
3. ​​Receive card settings​ ​: The load resolution error exceeds ±5% will cause the screen to be lost

​​Self-test method​ ​: Play the full screen with solid color pictures (red/blue/white), and report to repair them immediately if you find color spots. Have a cold knowledge:​ ​Installation method with awning​ ​, can extend the lifespan of the screen by 2-3 years.

Parameter comparison table: Understand this and try less tricks

​​Key interpretation​ ​:choose​ ​Supports automatic brightness adjustment​ ​The model can save 40% energy on rainy days. There is a real case: a supermarket’s signature screen does not have a temperature control module, and the electricity bill is 200 yuan a day in summer.

Hidden tips for maintenance

The master knows these three time nodes:

• Clean the heat sink every quarter (dust accumulation will increase the temperature by 8℃)
• Check sealant strips before the rainy season (aging and cracking will cause short circuit inlet)
• Do a full-screen inspection 72 hours before major events (heat plug and replace it immediately if you find a bad point)

Here is a tip for saving money:​ ​Add reflective film on the back of the screen​ ​, can increase the effective brightness by 15%, which is equivalent to saving 20% ​​of electricity bills. Notice! Never use a high-pressure water gun to spray directly, as the waterproof joints can't withstand this.

I have to say that the cross-sea project I participated in last year was really eye-opening. The LED screen at the beach must be used​ ​Aviation-grade anticorrosion coating​ ​, the salt spray test alone took 200 hours. There is a new trend in the industry now - intelligent operation and maintenance systems are becoming popular, and they can predict faults 7 days in advance. I heard that they can cut the repair costs by half. However, the most practical suggestion is: be sure to ask the manufacturer to perform 72-hour continuous aging test before signing the contract, which is more reliable than any parameter table!

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