How to solve the problems arising in the use of LED display

LED display manufacturers in the production, installation, commissioning LED display in the process, will encounter many problems: for example, the average load on the LED display content is not, the problem of communication signals, LED display video, bright lines and other factors appear. In order to give customers better service, following look at a variety of problems and their solutions:

First, the whole piece of the screen is not bright, led street light wholesale unit board appeared reasons

1, 26P cable and power module indicator visual power cable, cell plate is normal.

2. Use a multimeter to measure whether the normal cell plate voltage, and then measure the voltage output of the power supply module is normal, if not, it is determined that a bad power supply module.

3, measuring power module voltage is low, adjust the trim (trimming near power module indicator at) the voltage up to standard.

Second, LED display screen appears black screen what the reason is?

In the process control system to use, we occasionally encounter LED screen appears black screen phenomenon.

Third, the load is not on, or what the reason is not on the communication?

Communication does not load on and on about the same reason, it may be due to several causes, please listed under the control and operation of:

1. Make sure the control system hardware has the right power. (+ 5V)

2. Check to make sure the serial cable is used to connect the controller to direct line, instead of a crossover cable.

3. Check to make sure that the serial cable is intact and no loose ends or shedding phenomenon.

4, the control LED display screen control software and control card they choose to use to select the correct product model, the correct transmission, the correct serial number, the correct serial transmission rate and control within the software provided by the DIP switch chart correctly setting address and serial transmission bit rate control system on hardware.

5. Check the jumper cap is loose or fall off; if there is no loose jumper, make sure the jumper in the right direction.

6. If the above checks and correction still appears after loading is not on, use a multimeter to measure, hardware serial computer control system is connected or is damaged, return the computer to confirm whether the manufacturer or the control system hardware body return detection.

Fourth, the reasons for a few seconds the screen becomes bright line or flowers appear on the led street lighting fixture just power?

After the screen controller and the computer and HUB distribution panels and screens connected properly, you need to provide + 5V power supply to the controller in order to make it work (in this case, not directly connected to the 220V voltage). Power-moment, will appear on the screen for a few seconds or a bright line, "the video" The bright line or "Huaping" tests are normal phenomenon, reminding the user's screen will begin to work. Within 2 seconds, automatically eliminate this phenomenon, the screen into the normal working condition. Through the above description I believe that many users LED display LED display for the general aspects of the problem is to know the root cause, and for a simple solution to the problem has been associated with.