Are you staring at the huge screen in the mall, guess where its "brain" is napping?

Last year at the Guangzhou Lighting Festival, the 20-meter-long LED wall of a certain pavilion suddenly turned black, and the repairman could get it done in 5 minutes - you would never imagine that the problem lies in the memory card as big as a palm. This reminds me of a cold knowledge:​62% of LED screen failures on the market are actually related to memory modules​​, but most people can’t even find any way to hide memory.

Open the screen to find treasure

Let's first disassemble the machine on paper: the LED large screen is like a thousand-layer cake, and the most precious memory is actually hidden in​Dust chamber on the back of the control card​​in. Here are three treasures you need to remember:

• ​​Case mezzanine​: Sealed cabin with IP65 protection, the same principle as the diving watch
• ​​Rear side of the receiving card​​: Large slot for fingernails, using military-grade gold-plated interface
• ​Next to the heat dissipation channel​: Memory chip with temperature control protection, automatic sleeping after temperature exceeds 55℃

To give a practical example, why can the rental screen used in a certain exhibition be disassembled and installed quickly? The secret is the modular memory cabin design, which directly replaces the entire unit during maintenance, saving 3 hours of labor than the traditional method. You taste it, you taste it carefully.

The twists and turns in memory capacity

To be honest, LED screen memory is now more capable than mobile phones. But why can the screens in concerts be more "memory" than those in shopping malls? Here is a big deal:

1. ​​Refresh rate starts at 1920Hz​ models, which save 30% of the screen data per second
2. ​​Intelligent brightness adjustment​Function generates 500MB log files per day
3. ​Key points​: 4K video sources consume 8 times more storage space than ordinary video sources

There is a real case: a shopping mall broadcasts 4K advertisements and gets stuck after three days. Later, I found out that the memory was not selected as the right model. Now the new models have dynamic memory allocation technology, such as turning on the power-saving mode for the mobile phone, which can automatically clean up the cache, and the actual measurements extend the screen life by 40%.

Three tough tips for maintenance

Last year, a commercial center in Hangzhou suffered a huge loss - memory accumulation caused screen loss, and the maintenance fee was enough to buy a car. Learn a few tricks from the master:

• ​​Do grayscale calibration every month​​: Just like a computer disk, it can release 30% of memory
• ​​Dehumidification mode should be fired in the rainy season​: Humidity exceeds 60% and start the moisture-proof program immediately
• ​Key points​: Choose a model with dual memory backup, the main and backup automatic switching will not be black.

A project party in Suzhou calculated the accounts with me: doing these three maintenance projects will save 78,000 yuan in repair costs in five years, which is enough to pay employees a half-year bonus. Saving money these days is profitable, do you think?

I have to say that LED screens are becoming more and more like smartphones now, and whether the memory is managed well directly determines the user experience. I saw a new device two days ago, with a memory module with a self-test function, and there were any problems with warnings three days in advance - if this technology is popularized, the maintenance masters would have to switch careers to carry out preventive maintenance. Next time you see the large LED screen with bright colors, you might as well think about the black technology hidden in its belly, so that you will definitely have new fun to watch the exhibition.

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