"The LED large LED screen I bought for 300,000 yuan was scrapped when the processor was installed in the wrong position!" This is not a scare - it was debugged before the opening of a shopping mall last year, and it was asked to be removed and reinstalled because the processor was stuck in the fire escape passage. Today we will talk about this detail that is easily overlooked but extremely important.

​​1. Three major restricted areas for processor location​​

1. ​​High temperature and high humidity zones​: The most outrageous installation I have ever seen is to stuff the processor into the external air conditioner unit, which will cause the machine to be overheated in the summer. The operating temperature of the processor must be controlled at 0-40℃ and the humidity is less than 80%.
2. ​​Electromagnetic interference source​: Within 5 meters of the transformer and within 3 meters of the elevator shaft are minefields. There is a case: the processor installed next to the distribution room always has snow patterns on the screen, and the location is immediately resolved.
3. ​​Insuring blind spots​: Never learn from a certain exhibition center to embed the processor deep in the steel frame, and half of the screen must be removed for repair. Leaving at least 60cm of operating space is basic common sense

Here is a cold knowledge: the installation height of the processor should be between 1.2-1.8 meters. If the plug-in and unplug the line is too high, you have to climb the ladder, if it is too low, you can easily be touched by mistake. Last year, a staff member broke the connection wire on the ground and paid 80,000 yuan in medical expenses.

​​2. Installation tips for different scenarios​​
• ​​Outdoor advertising screen​：

• Waterproof cabinet (starting from IP55), temperature and humidity sensors must be installed in the cabinet
• Case: The processor of a highway intersection screen is hidden in a column and has a built-in dual fan cooling system
• The power cord must be galvanized steel pipes, and lightning protection modules cannot be saved

• ​Stage floor tiles screen​：

• It is recommended to use a processor with wireless control function to avoid running the line all over the ground as a safety hazard.
• The heat dissipation hole should be opened to the side to prevent trampling and blocking the air inlet.
• Tested data: Processor with graphene heat dissipation coating, continuous working for 12 hours, temperature is 15℃ lower

• ​​Sports Stadium Screen​：

• It is necessary to do dual-machine hot backup, and two processors are placed in different areas
• Shockproof brackets must not be missing, the vibration energy of fans when cheering
• Remember to connect to the UPS power supply, and suddenly the power outage is damaged even more the wallet

There is an unusual point: the closer the processor is to the screen, the better? wrong! For signal attenuation over 50 meters, fiber optic transmitter must be added. Last year, the basketball court suffered this loss, and the screen was stuck with an ordinary network cable from 30 meters away.

​​3. Maintenance skills that only veteran drivers know​

1. When using an air gun to clean the dust every month, remember to unplug all interfaces - high-pressure airflow will damage the precision interface
2. The backup processor must be powered on regularly, and the long-term use of capacitors will age.
3. Check the BNC connector when encountering snowflake screens, 80% of them are caused by poor oxidation contact
4. The configuration backup must be done before upgrading the firmware. A theater failed to upgrade and the performance was delayed and liquidated damages were compensated.

Let me tell you an industry secret: a truly reliable processor has a crisp "click" sound when pressing the button, and counterfeit goods are all dull. The next acceptance will be equipped with a laser pointer and the heat dissipation hole of the processor - the internal reflectors of high-quality products are arranged neatly, and the inferior ones are like messy honeycombs.

​​4. Five questions to ask when purchasing​​

1. "What is the protection level?" At least IP55 for outdoor use
2. "Does it support HDR10+?" This has become the industry standard since 2024
3. "Is the cooling system active or passive?" It is best to choose dual fans + copper tube heat dissipation in large screens
4. "Is there any hardware calibration function?" can save on the cost of later color calibration
5. "Warranty includes installation guidance?" Many manufacturers do not guarantee third-party installation

Talk with actual measured data: a certain brand of processors nominally support 4K@60Hz, but can only run to 30Hz. Therefore, be sure to bring a 4K test film source during acceptance and use professional software to detect frame rates - seeing may not be true, so the data will not be lie.

Now back to the core question: How much should a processor be worth? Personal experience is—​​3-5% of the cost of the entire large-screen​Spending on the processor is the most reasonable. For example, a 500,000 screen is just right with a processor of 15,000-25,000. Don’t be fooled by the nonsense of "high-end processors can improve picture quality". The picture quality depends on the screen body and three points to debug. However, stability is worth investing more. After all, the entire screen will become a blackboard after the processor crashes. Do you think this is the case?

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