Shenzhen Lianchengfa Technology Co., Ltd.

When the LED display is installed or used, sometimes the display does not work. At this time, many people who do not know the reason may think that the quality of the LED display is not good, and ask to replace the screen. In fact, otherwise, the phenomenon that the display screen does not work has nothing to do with the quality of the screen. Let's talk about how to deal with the LED display screen that does not work.

The first situation that the display screen does not work on the LED display screen is: the display screen does not work, and the green light of the sending card flashes (made into a retractable type). The main reasons for this situation are that the screen is not powered; the network cable is not connected well; the receiving card has no power supply or the power supply voltage is too low; the sending card is broken; . The order of troubleshooting methods to be used at this time is: check to confirm that the power supply of the screen is normal; check and reconnect the network cable; ensure that the DC output power supply of the power supply is 5-5.2V; replace the sending card; check the connection or replace the function card (optical fiber transceiver box).

The second situation that the LED display screen does not work is: the display screen does not work, and the green light of the sending card does not flash. The main reasons for this problem are that the DVI or HDMI cable is not properly connected; the copy or expansion mode is not set in the control panel of the graphics card; the software chooses to turn off the power of the large screen; the sending card is not inserted in place or there is a problem with the sending card. At this time, the detection sequence of the elimination method that needs to be used is: check the DVI cable connector; reset the copy mode; the software chooses to turn on the power of the large screen; re-insert the sending card or replace the sending card.

The above are the main problems and detection methods when the LED display screen does not work. Hope it helps you.