How To Solve The Problem of Led Display Screen?
How to solve the failure of led display screen? There are many reasons why the full-color led display screen can't be displayed normally.
If the new screen is installed with electricity, it may be that the control card is set and scanned incorrectly, or the ribbon cable is not inserted correctly ( check the ribbon cable from the control card to the first board ), and the 5v power supply will be connected incorrectly.
If we suddenly find this phenomenon after using it for a period of time, apart from the control card failure, the biggest possibility is that the board water burns the chip or power supply.
There are also monitors that can try connecting DVI interfaces. first, look at whether the DVI output port of the video card is normal or not. General lingxingyu card DVI interface resolution is 1024 * 768. The cause of led display screen may also be the problem of video card or driving problem. Try unplugging the network cable of the receiving card behind the display screen and pressing the debug button on the receiving card to see if the screen scanning is normal.
In addition, other causes of full-color led display screen:
1. the led display screen cannot be displayed
Solution: check whether the power supply of electronic display screen is normal and whether there is 220 v strong current input.
2. the led electronic display screen is not normal, and the screen is flowered.
Solution:
( 1 ) whether the parameters of led control card are set correctly and whether signals are transmitted to the led control card of electronic display screen;
( 2 ) whether the communication line is in normal communication, check whether there is signal input in the led control card;
( 3 ) led control card 5v power supply is normal;
3. part of the electronic display screen displays abnormally, such as black screen and flower screen.
Solution: check whether the screen power supply with abnormal display works normally or not; Signal transmission line failure; Single module failure of the screen body.
A there is a problem with the output
1. check whether the line from the output interface to the signal output IC is connected or shorted.
2. check whether the clock latch signal of the output port is normal.
3. check whether the cascade output data port between the last drive IC is connected with the data port of the output interface or short - circuited.
4, the chassis heat dissipation is bad, which leads to the increase of video card temperature.
Solution: eliminate the heat dissipation problem.
Check whether the fan is operating normally, refuel the fan, clean up the dust in the chassis, and troubleshoot after solving the heat dissipation problem.
5. reinstall the system, because the video card or monitor does not support high resolution.
Solution:
( 1 ) restart the computer, press F8 continuously, in the advanced startup menu, select enter " safe mode" to enter the login system, and then enter the display settings under windows, after selecting 16 color States, click " application" button, and click " ok" button.
( 2 ) restart the computer, in windows normal mode, enter the device manager, delete the graphics driver, and restart the computer.