Throughout the display industry's development in recent years, it is not hard to see, no flat-fell seam, high quality is the ultimate pursuit of display.

A,LEDWhat is the cause of the screen appears completely black screen?

In the process of control system using, we occasionally meetLEDThe phenomenon of screen appears completely black screen.The same kind of phenomenon may be caused by different reasons, even the process of black screen will vary due to different operation or due to the different environment.Such as it may be a moment of electricity is black, may also turn black in the process of loading, also may be black, and so on after sent:

2, check and double-check the serial port of the used to connect to the controller for loose or falls off phenomenon.(if the black in the process of loading, probably because the reason is caused, namely in the process of communication was interrupted because of loose communication line, so the screen turned black, don't think the screen body did not move, the line will not be loose, please to check, it is very important to want to quickly solve the problem.)

Second,LEDThere was a few seconds of bright screen just to electricity lines or screen get flowers?

Three, unit plate appear the cause of the entire screen is not bright, dark bright

2, use multimeter measurement unit board presence of normal voltage, measuring the output voltage power supply module is normal again, if no, the judge for the power module is bad.

3, measure the low voltage power supply module, regulate the fine-tuning (power supply module near the light fine-tuning) to make voltage up to standard.

Four, load or communication is not what is the reason?

Communication is not the reason and not loaded on roughly the same, may be due to several reasons for this, please according to the listed all the control and operation:

1, to ensure that the control system hardware has been correctly to electricity.

2, check and confirm that used to connect to the controller of the serial port for straight line, not cross line.

3, check and confirm the serial ports on both ends of the cable is in good condition and no loose or falls off phenomenon.

5And check the jumper cap is loose or fall off;If the jumper cap without loose phenomenon, please make sure the jumper cap in the right direction.

6After the above check and correction, such as there is still a load, please use multimeter measure, whether the connected computers or serial port control system hardware is damaged, to confirm whether they should get back a computer manufacturer, or will control system hardware back testing.