What to do when an led display is black screen

In practical application, LED display screen will inevitably encounter various faults, especially when the LED display screen brokes, which makes the user crazy. Following we will know 2 embarrassing examples of LED blank screen：

 

1. Opening ceremony of the Winter Olympics in Sochi--Black Screen Crash

In 2014 Russia Sochi Olympics opening ceremony, when the audience entered the countdown, the countdown LED sign suddenly became black. In addition, the Olympic Rings also showed wrong on the big screen, leading to 5 rings only showed 4, which caused the sponsors very embarrassed.

 

2. 2015 Beijing Film Festival--Black Screen Crash
In 2015 fifth Beijing International Film Festival, on the new movie directed by Dapeng <A Hero Or Not> award ceremony, when the director published the award-winning speech, part of LED display screen background suddenly became black. This incident made the whole programming division and all the actors were so embarrassment.

LED display screen appears blank screen event has great influence, even caused some irreparable live accidents, especially like the Olympic Games, live Film Festival Occasions. Terminal customers, rental business and LED display supplier will have a lot of losses, especially for rental and manufacturers, that may caused them lost some very important clients, affect the future cooperation. Therefore, as an LED display screen manufacturer, blank screen is a problem worthy of us attention.

 

What caused LED Display Blank Screen?

It is understood, 80% LED display malfunction are because of the following reasons : AC power distribution, terminal, connector, signal and low voltage DC connection ,module, fan, plastic shell components and so on. All these matters may lead LED display screen blank or partial black, mosaic, no signal.

The rest of faults mostly(80%) caused by these reasons: PCB welding spot, capacity, connector, LED lights and low protection grade of cabinets. bolt corrosion of metal hardware, control card fault. The above several reasons also made LED dead lights, highlight, one or more rows is not lit, missing colors and so on. If it is the control card wrongs, the screen images would irregular display.

In the process of control system is used, occasionally had a black screen appears in the LED display. The same phenomenon might cause by several different factors and the screen turns black process will also be different because of the environment. For example, sometimes the screen is suddenly black and sometimes it is gradually turn black or it could be black after sending the content.

 

How to deal with these problems?

1.Make all the components has been fully powered on correctly.
2.Check and repeatedly confirm that whether the connector of controller is loose off. If the screen turn black in the process of loading, which means the communication line is loosening and interruption cause the blank screen. Under the circumstance, please manual examination to solve the problem quickly.
3.Check and confirm the HUB distribution board is connected correctly with LED screen and main control card.
4. Please check and confirm whether the 50P flat cable connected with the control card & HUB distribution board is loose or invert or not .
5. If your display interface definition and HUB board does not match , the black screen phenomenon will appear too. Please double check your jumper is loose or not, open circuit or short circuit phenomenon.
If you have the corresponding the signals ABCD one by one, please check the OE signal is connected properly.

Comparison between neon sign and led display screen

The Benefits of Neon Signs

Neon has a long history, having been used for nearly a century.  As an established technology, it's reliable. It's everywhere, all over the world, and finding dealers and servicers for neon signs is extremely easy in virtually any city worldwide.

Additionally, many believe that neon light is more aesthetically pleasing. It gives off a much “warmer” light than LED lights do. Plus, thanks to its association with the Art Deco movement and countless films showing drizzly, neon-drenched city streets, it does have an undeniable romance to it.

Unfortunately for neon, that's about all it has going for it these days.

The Benefits of LED Display Screen

Price: The initial prices are roughly comparable, although LEDs tend to be around 10% cheaper to purchase.
Reusability: Once you get a neon sign, there's no changing it. LED displays can be updated as often as you like, with whatever messages you like.
Power usage: LED displays use between 5 and 10 times less power than a comparable neon sign, leading to significant long-term cost savings.
Maintenance: Neon tubes have to have their gasses periodically refilled, something that is best left to a (costly) professional. LED signs require virtually no maintenance and can last up to around a decade before needing to be replaced.
Environmentalism: Neon signs are easily broken, being made of glass, and contain noxious gasses, which leak out. LED does not have this problem.  TCB LED Display has agent in the USA as well.
Brightness: LED displays are far brighter than neon. They can be seen from further away, even in broad daylight.

By comparison, if versatility and cost-effectiveness are the priorities, LED display screen is the clear winner. There are some specific uses that still favor neon, but overall, LED is the all-around superior choice.

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