10 faults and solutions of LED display

If the Led Display fails, it is definitely troublesome to the industry. But trouble is used to solve, but how do you solve these problems? Today, I will learn about the 10 methods of the LED display failure to eliminate the failure of the LED display.

.First, the display is not working, the sending card green lights flash (made into a collection type)

1. Failure cause:

a. There is no power supply;

b. The network cable is not connected well;

c. No power supply or power supply voltage for receiving cards;

d. The delivery card is bad;

e. Signal transmission intermediate device connection or failure (such as: functional card, optical fiber receiving box);

2. Failure exclusion method:

1) Check the normal power supply of the screen body;

2) Check the re -connecting network cable;

3) Make sure the power supply output power supply is 5-5.2V;

4) Replace the delivery card;

5) Check the connection or replace the function card (optical fiber receiving box);

.Second, the display is not working, the send card green light does not flash

1. Failure cause:

A.DVI or HDMI lines are not connected;

b. There are no settings for copying or extension in the graphics card control panel;

c. The software selected a large -screen power supply;

d. The delivery card is not inserted or there is a problem with the delivery card;

2. Failure exclusion method:

1) Check the DVI cable connector;

2) Set replication mode;

3) Software selection to turn on the large -screen power supply;

4) Re -insert send card or replace the send card;

.Third, prompt "the big screen system is not found" when starting

1. Failure cause:

a. The serial line or the USB line is not connected to the sending card;

b. Computer COM or USB port bad;

c. serial port or USB line bad;

d. The delivery card is bad;

e. No USB driver installed

2. Failure exclusion method:

1) Confirm and connect the serial line;

2) Replace the computer;

3) Replace the serial line;

4) Replace the delivery card;

5) Install the new version of software or install the USB driver separately

.Fourth, long strips such as lamps are not displayed or partially displayed or lack of color

1. Failure cause:

a. Flat lines or DVI lines (applicable to submarine series) are not well contacted or disconnected;

b. Show the lamp at the transfer of the former output or the latter input is problematic


2. Failure exclusion method:

1) Re -insert or replace the line;

2) Determine which display module is faulty and then replace repair

. Some modules (3-6 blocks) are not displayed

1. Failure cause:

a. Power protection or damage;

B.AC power cable is not good contact

2. Failure exclusion method:

1) Detection and confirm that the power supply is normal;

2) Re -connect the power cord

. The entire box is not displayed

1. Failure cause:

A.220V power supply line is not connected well;

b. There are problems with network cable transmission;

c. Receive card damage;

d. Hub board insertion misplaced

2. Failure exclusion method:

1) Check the power supply line;

2) Confirm the replacement of the network cable;

3) Replace the receiving card;

4) Re -insert HUB

, the whole screen, the spots, the picture and the shadow, the new movement

1. Failure cause:

a. Driver loading program is wrong;

b. The network cable of the computer and the screen is too long or the quality is not good;

c. The delivery card is bad

2. Failure exclusion method:

1) Re -operate loading the receiving card file;

2) Reduce the length of the network cable or replace;

3) Replace the sending card



. Each display unit of the entire display displays the same content

1. Failure cause: No display screen connection file is not sent

2. Failure exclusion method: reset the sending the screen file, and connect the network cable that connects the computer when it is sent to the output port of the transmission card near the indicator light

.the display screen is very low, and the display image is blurred.

1. Failure cause:

a. The delivery card program error;

b. Function card settings are wrong

2. Failure exclusion method:

1) Restore the sending card default settings and save;

2) Set the maximum brightness value of the display screen monitoring is 80 or more;

. Shake the entire screen screen or shadow

1. Failure cause:

a. Check the communication line between the computer and the large screen;

b. Check the DVI line of the multimedia card and the delivery card;

c. The delivery card is bad.

2. Failure exclusion method:

1) Put the communication line or replace;

2) Pour DVI cables and reinforce;

3) Replace the sending card.