LED Display Control Card Troubleshooting Guide

What is the LED display control card?
LED display control card is the core component of LED graphic display, is responsible for receiving from the computer serial port display information in frame memory, LED display drive mode according to the partition generated the required serial display timing control and scanning data. The effect of the LED screen is related to it.
LED display control card what is the classification?
Can be divided into single and double color control card, control card, control card and colorful color three kinds of
Use LED display control card should pay attention to what?
Different brands of control card and the corresponding software installation is different. The same brand is also divided into different models, functions vary greatly. Small area of monochrome screen, commonly used simple partition control card, cost-effective, while the area is slightly larger, you can use zoning control card, higher prices.

LED display control card connection way?
Control card and computer connection mode: network port, serial port (TCP/IP) (RS232, RS485), U disk conduction, GPRS wireless connection and Zigbee wireless connection way.
How do I select the LED display control card?
First understand the LED screen size, calculate points, know that you need the effect is synchronous or asynchronous, and need to develop two times; and then determine the, synchronous and asynchronous, determine the effect, determine the scope of points, determine the price range, and finally determine the card control card; select the most appropriate, not necessarily the price high quality, good is the most suitable. Finally, the software is not suitable for themselves and customers.
Can’t I find the LED display control card?
1. Make sure the control card is compatible with the software.
2. Check the connection line is off, loose, and confirm the control card used to connect the serial cable to control card with check, some control card with straight (2-2, 3-3, 5-5) and some control card (2-3, 3-2, 5-5).
3. Make sure that the control system hardware is properly powered
4. control software and the control card control card, choose the right product type, transmission mode, the correct serial number, correct baud rate and control software provided by dial switch control chart is set correctly address and baud rate of hardware.
5. If the above check and correction is still not loaded, please use a multimeter to measure, or computer hardware of the control system is connected to the serial port is damaged. To confirm whether it should be returned to the manufacturer or the computer control system hardware was detected.
6. If the fifth step is not convenient, please contact the Haisheng LED Co.Ltd engineer to provide technical support.
More Troubleshooting tips about your led display please visit our website  www.optokingdom.com
We are the most trusted online store for HSTV LED Display,LED screen,led wall,led signs and led panel. We offer the highest quality of LED Screens, Displays,signs,panels suitable for both indoor and outdoor advertisement.

Common Causes of LED Display Failure

Nowaday, LED display has become a part of people’s lives, the streets and lanes, the square station, can be seen all kinds of different sizes of different types of LED display. It is a set of optical, structural mechanics, electronics, computer science in a systematic project. According to statistics, ninety of all domestic LED fault screen percent are large or small, if summed up the main attribution of these faults, we can from the fault source control, to improve the display quality.
LED display 80% failure is caused by the following factors: AC power distribution wiring harness, terminal, connector, signal and low voltage DC wiring harness and connector, switch power module, fan, plastic shell components. These interfaces, cables, power, if you do not choose the bottom, will lead to a whole or part of the black screen LED display, flower screen, mosaic, no signal, etc.. These are also very difficult to maintain, so we are in the production process is to pay attention to reduce the failure rate.
The rest of the fault and 80% for the following reasons: PCBA solder joints, capacitors, terminals, LED lamps, Water Leakage dust caused by the level of protection for the lack of the packing box, leakage screw hardware corrosion control board. These reasons will lead to the LED screen with blind lights or highlights, one or more lines are not bright, lack of color, etc., if the control card or software problems will lead to abnormal image display. Outdoor LED display must be strictly in accordance with the testing standards to design, waterproof and dustproof, wind resistant to high temperature, otherwise it is easy to appear all kinds of faults, and even make the entire LED display scrapped. In addition, the operator should grasp the relevant basic knowledge, with good habits, coupled with professional maintenance personnel, but also to a certain extent, reduce the failure rate.
More Troubleshooting tips about your led display please visit our website http://www.optokingdom.com/user-manual.html
We are the most trusted online store for HSTV LED Display,LED screen,led video wall,led signs and led panel. We offer the highest quality of LED Screens, Displays,signs,panels suitable for both indoor and outdoor advertisement. Visit our C2M online shopping mall: http://www.optokingdom.com/
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Common Causes of LED Display Failure – LED Display Solutions Provider

PH8.93-8.93 Transparent LED Screen 500×1000mm

Transparent LED Screen
Featured with high transparency, PH8.93-8.93 LED Transparent Screen can be used at any place that has glass walls. Highly usable at places like bank, shopping mall, theater, commercial stage, chain store, hotel, public building and landmark building etc.
Space Saving, Ultra-lightweight, customizable

The Transparent LED Screen for Shopping Mall is only 65mm thick which makes it ultra-lightweight and space saving. Can be installed at any area without requiring much space. The light weight of 7kg/panel LED screen is easy to carry, transport and install – saving good amount of money on your labor costs.
High Transparent Effect

It features transparent effect up to 80% keeping the perspective function of glass. The higher transparency effect allows you to see LED light on the glass without any effect to surround of glass wall.
High Brightness, Better Quality

The high brightness and high definition features of the PH8.93-8.93 Transparent LED Screen ensures great quality pictures – making it a perfect fit for stage, banks, glass wall, promotion, station, stadium and other indoor places.
Silence Operation – Low Power Consumption

The Transparent LED Screen for Shopping Mall is known for its silence operation and low power consumption. It is also known for fast heat dissipation which will save more energy. Cut on the electricity expenses and help environment with this highly advanced advertising display.
Application

The PH8.93-8.93 Transparent LED Screen is highly usable at indoor places like malls, stages, chain stores, hotels, public buildings, bars, restaurants, banks etc. Its thin size and ultra-lightweight module makes it easy to install at any area without covering much space.
Unique Cabinet Design – Easy to Install & Transport

Single light bar can be directly plugged in and pulled out which is easy to install and save time and effort. The portable cabinet is easy to carry and can also save transportation cost for you.
Integrated Design, Fast Installation

The thin size and ultra-lightweight modules makes it easy to carry, transport and install. You hardly need any specialized tools or skills to install it. Everything is inbuilt, and it can be installed within a few minutes using simple screw-driver.
See more at http://www.optokingdom.com/PH8-93-8-93-Transparent-LED-Screen-500%C3%971000mm-p11533.html

How to choose LED wall according to pixel pitch

Pixel pitch is one of the important technical parameters indicators of LED wall screen, what is pixel pitch? How to choose LED wall according to pixel pitch? This is what many friends doubt, the following is the engineer's best answer:
What is pixel pitch?
Pixel pitch is to reflect the pixel density from the two pixel distance, pixel pitch and pixel density is led screen’s physical attribute; Information capacity is the unit of quantity for per unit area pixel pitch’s one-off shows information carrying capacity. The smaller the pixel pitch, the higher the pixel density, the more information capacity for unit area one-off shows, the closer the viewing distance.
How to choose LED wall pixel pitch?
Choose the LED wall pixel pitch, there are two factors:
1. LED wall viewing distance.
Where is the LED wall, and usually how far the people stay to watch it, this is only one important factor for make sure pixel pitch.
Usually there is a formula for the optimal viewing distance= pixel pitch/(0.3~0.8)，this is a roughly range. For example, the pixel pitch 16mm LED wall, the best viewing distance is 20~54 meters, the closer distance, then could distinguish the LED wall’s every pixel pitch, when stay more far, then could not distinguish instead. (what we said is based on normal vision, not including the myopia and hyperopia)
For outdoor LED wall, the close distance, usually use P10 or P12，the more far distance use P16 or P20,for indoor LED wall, usually use P4~P6 is ok the more far distance use P7.62 or P10.
2. LED wall pixel pitch.
For video, the basic format is VCD, 352*288 resolution, DVD format 768*576. So for the video screen, we suggest that the lowest resolution no less than 352*288, so the display effect is good enough. If lower resolution, it also can show, but not up to much better effect.
For single and double color LED wall which mainly show text and images, not require high resolution, according to the actual size, could show the minimum 9 size font, it is up to your text amount.
Therefore, generally choose LED wall, the smaller the pixel pitch, the higher the resolution will be, and the show effect will be clearer. But this also consider the cost and demand, application scope and other factors.

How to Select a High Quality LED Wall Display

With the development of the led displays, many led wall display manufactures appears in a short time. Because of this the display quality are facing with very terrible competition. Some manufactures use bad quality products with very low price to compete with its rivals. It deeply hurt the customers. As a honestly and professional led display manufacture, Dakco always use good material and high technology to make sure the led display’s quality. Now we would like to tell you some factors which influence the displays’ quality. Hope it is useful for you.

1. The led chip quality.
As the most important part of the led displays, led chip’s quality will directly influence the led displays’ quality. Now there are many led chip brand in the market. Among of them, nichia, cotco cree and silan are used most. So if you want to buy a high quality led wall display, You must pay more attention on the led chips selection. Nichia and cotco cree led chip’s quality are very stable, of course the prices are higher than other chips. As silan chip has the best cost performance, it is used the most now in the led display market especially in china. But even the silan chip, they also have some different kinds, especially on different sizes. From 9 mil to 14 mil, the led chip size is bigger, the brightness is higher, the quality is more stable. so the most of important factor for you to select the display is the led chip brand and quality, no matter indoor led display or outdoor led display.
2. The making process.
As the signal led is very easy to broken, so its making process must be very careful. The humidity control and anti-electricity protection are highly request. Now with the development of the technology, many modern machines are used in this process, include the led inserting machine, wave-peak soldering machine, hot air reflow soldering machine and others. However, there are still some manufactures don’t use these machines but hand-working. This factor will influence the led display quality very much. Dakco pay more attention to this detail. Instead of hand-working, Dakco put the machines into all the making process. so our quality is reliable. If available, You’d better to visit the factory first before you buy a led display.
3. The reasonable design.
LED display screen will be used for a long time. it can reach 100000 hours or even more. so it has a high request for the design and material.
The design mainly refers to two parts: one is led module PCB design. another one is the cabinet design. if the PCB design is not reasonable, it will deeply infulence the life time of the led display.Dakco has very strong R&D team. they are very professional in this aspect. so our led modules have a longer life time. Refers to the led cabinet design, it is also very important. if the cabinet design is not good. after one or two years, it will not protect the led display from rain,snow or storm. then your led display will be destoryed very easily. so when you buy a led display, you must to know whether the supplier is professional or not? especially in technology.
4. The high quality parts material.
The high quality material is very important for led display. such as powersupply, led module mask, module cables and so on. These details are all influence the effect of the led displays. Now in the market. Meanwell power supply is the best for the led display. the colorful module signal cables is better than white one. about the led module mask, Dakco use our own design mask. it won't be changed its shape even after a long time.
These are some experience which dakco want to share with all the people who are interested in led displays. Hope they are useful for you.

small pixel led display is not harmful to eyesight

Small pixel led displays are welcome in a number of occasions by people of all ages because of its unique high brightness, wide color gamut, high contrast and other advantages, however, the small pixel led display light to human eye bio-security issues have also to be taken into attention. HSTV find an evidence to tell the small pixel led display is not harmful to eyesight, see as below:

Chinese Institute of Metrology took accordance with the existing international standards, measured the bio-security of a p1.67 led display from both the blue light hazards to retina and the thermal hazards, and took comparison with a plasma TV and a LCD TV.
Test results show that, at the same brightness and white field conditions, although the peak brightness of the led display is higher than the other two samples in blue band, but its narrow band characteristics resulting weighted scored retinal hazard index not higher than plasma TV and LCD TV. The retina bio-security measured data has no significant differences between the three displays, the led display measurement results even better than the other two displays.
Whats should be keep in mind is that any display can cause permanent eye damage if keeping long-term view on the screen, thus, no matter what form of display is used, the audiences should pay attention to eye health and maintain good habits with the eyes. Work and rest combined is the best way to protect their eyesight.

P7.81 Outdoor Rental LED Display 500*1000mm

Golden Ratio - Suitable for Stage
The stage curtain LED display has an ideal cabinet size of 500mmx1000mm which makes it ideal for stage background, bar entertainment ceremony and wedding.

Space Saving, Ultra-lightweight

The Outdoor rental led display is only very thin which makes it ultra-lightweight and space saving. Can be installed at any area without requiring much space. The light weight of 16kg/panel LED screen is easy to carry, transport and install - saving good amount of money on your labor costs.

Standard Cabinet Dimensions

The ultra-lightweight cabinet made is aluminum-magnesium alloy which gives it extra strength. The cabinet of Lightweight LED Screen for Show is designed with perfection, making it really easy to install. Also, the quick-lock feature requires no technical skills to install and uninstall.

High Brightness, Better Quality

The high brightness and high definition features of the Outdoor rental led display ensures great quality pictures - making it a perfect fit for stage, hotel, promotion, station, stadium and other outdoor places.

Four High Technologies - Point-to-Point Correction

The display features four high technologies and point-to-point correcting. High refresh rate, high gray scale level, high definition and high contrast rate present excellent quality picture output in every condition.

Silence Operation - Low Power Consumption

The Stage Curtain LED Screen is known for its silence operation and low power consumption. It is also known for fast heat dissipation which will save more energy. Cut on the electricity expenses and help environment with this highly advanced advertising display.

Application

The Outdoor LED Video Wall is highly usable at outdoor places like malls,

stages, promotion, exhibitions, stations, stadiums

stages, promotion, exhibitions, stations, stadiums

stages, promotion, exhibitions, stations, stadiums, etc. Its thin size and ultra-lightweight module makes it easy to install at any area without covering much space.

Strict Aging Test

All products undergo a strict aging test. The 72 hours aging test is conducted without die lamp, dim lamp, color difference and mosaic. The product is introduced in the market only if it passes the aging test, making sure the best quality is ensured for you.

Two Connection Types

The display has two connection types - horizontal and vertical connections. Thus, it can be installed in both ways. Unique cabinet design ensures fast installation and convenient maintenance.

Integrated Design, Fast Installation

The thin size and ultra-lightweight modules makes it easy to carry, transport and install. You hardly need any specialized tools or skills to install it. Everything is inbuilt, and it can be installed within a few minutes using simple screw-driver.

One Price for All

In single price, you get the complete kit which includes the LED display, cabinet, control system and package. It saves you a lot of money. Also, we replace the faulty accessories without any cost if your product is in warranty period.

- See more at: http://www.optokingdom.com/PH7-81-Outdoor-Rental-LED-Display-500%C3%971000mm-p11315.html