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Common fault solutions for LED displays

2016.05.06

In daily life, LED video wall in the use of a period of time will inevitably appear some small problems. So, do you know the common fault problem? Come to understand the common failure analysis and solution of the LED video wall.

In daily life, LED video wall in the use of a period of time will inevitably appear some small problems. So, do you know the common fault problem? Come to understand the common failure analysis and solution of the LED video wall.


1. A whole screen does not work show the pic

The possible causes and solutions of this phenomenon are as follows:

AC power distribution cabinet is not open switch on power distribution cabinet;

The computer stops working – turns on the computer, makes the computer work;

Send the card does not signal, the green light does not flicker – set the graphics card to enter the copy mode, such as still can not solve the problem on the transfer card;

Send the card to the screen of the signal line off – the detection of communication lines, such as still can not solve the problem on the network cable;


2. The whole screen display is not normal

The possible causes and solutions of this phenomenon are as follows:

The internal procedure of the receiving card is not correct – the sending and receiving card program;

Computer graphics or video source problems – replace the video card or video source;

Send card DVI line loose – insert and fix DVI line;


3. The whole screen picture is not connected together

The possible causes and solutions of this phenomenon are as follows:

Do not send a serial screen procedures – to send the screen program;

Program signal is not consistent with the actual line – again to see the scene of the signal line, re set the screen process;


4. Screen body appears ripple

The possible causes and solutions of this phenomenon are as follows:

Video card level is too low, can not play HD Video – replace a better graphics card;

The refresh rate of the screen is too low to adjust the parameters to improve the refresh rate of the screen;


5. Single box does not shine

The possible causes and solutions of this phenomenon are as follows:

Red power indicator light does not light, the power is not power – check whether the power line is connected, such as impassability, replace the power cord, if there is no effect, then replace the power supply;

Green signal light is not flashing or not – to detect whether the power of the receiving card, whether the signal line is connected, if the signal line is connected, then replace the receiving card;


6. Single module without display

The possible causes and solutions of this phenomenon are as follows:

Module display module without power supply terminal frequently check module docking is loose, the HUB board and re docking module, if there is a problem is to replace the HUB plate, the problem still exists to replace the module;

Module no display, module problems – direct replacement module;


7. Single module missing color, part not bright

The possible causes and solutions of this phenomenon are as follows:

Module internal components problems – direct replacement module;


8. Individual modules die a certain number of lamps

The possible causes and solutions of this phenomenon are as follows:

For the same period of time for a long time, or the screen to the useful life – direct replacement module or a single lamp



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