If the new screen installed on the power on the flower, it may be the control card settings scan is incorrect, or the line is not plugged in (check from the control card to the first board line), 5V power supply error will also occur this problem.
If the use of a period of time after the sudden discovery of this phenomenon, in addition to the control card failure, the biggest possibility is the board into the water to burn the chip or power.
And you can try a DVI interface of the display, first look at the video card DVI output signal is normal.
The cause of the LED display screen can also be the problem of the graphics card, or driver. Try to unplug the receiving card on the back of the screen and click on the Debug button on the receiving card to see if the screen scan is normal.
In addition, caused by the Full-color LED display screen of other reasons, also provides reference:
1, LED screen flower screen can not be displayed
Solution: Check whether the electronic display power supply is normal, whether there is a 220V strong power input
2, LED electronic display display is not normal, flower screen
Workaround:
(1) LED control card parameters are set correctly, there is no signal transmission to the electronic display led control card;
(2) Communication line is normal, check whether the LED control card input;
(3) LED control Card 5V power supply is normal;
3, electronic display part of the screen display is not normal, such as black screen, flower screen
Solution: To see if the display of abnormal power of the screen is working properly, signal transmission line fault;
The output has a problem:
1, the detection of output interface to the signal output IC circuit is connected or shorted.
2, check the output of the clock latch signal is normal.
3, detection of the last driver IC between the Cascade output data port and output interface of the data port connection or whether short-circuit.
4, the chassis cooling is not good, resulting in higher temperature.
WORKAROUND: Troubleshoot heat dissipation.