As long as there is no problem with the product, LED display in the course of the use of certain 100% is also a problem, no problem is completely bad maintenance. Some display in the use of some small points do not light up to form a video failure? LED screen screen can not be displayed for a variety of reasons, if the new screen on the power to spend, it may be set to control the scan card is not correct, or cable is not plugged (check from the control card to the first board of the cable) , 5V power supply error will also appear this problem.
Cause other reasons for LED display Huaping, but also for your reference:
1, electronic display part of the screen display is not normal, such as black, Huaping
Solution: View the abnormal display of the screen power supply is working; signal transmission line failure; screen single module failure.
1) to detect whether the output interface to the signal output IC line is connected or shorted.
2), check the output of the clock latch signal is normal.
3) to detect whether the serial output data port between the last driver IC is connected to the data port of the output interface or whether it is shorted.
2, the chassis is not good heat, resulting in increased graphics temperature caused.
Workaround: Eliminate heat dissipation.
Check the fan running is normal, to the fan refueling, clean up the dust inside the chassis to solve the problem after the heat can be ruled out.
Above for the LED display Huaping reasons and some of the solutions. From simple to complex, from the basic start to conduct investigation, it will certainly be able to solve the problem.