1. The entire screen is black

A: Check the power supply of the screen. Use a screwdriver with voltage tester or a multi-meter to check if there is power at the electrical appliance. There may be a problem with the switch or it may be broken.

B: For displays that are synchronized with the computer, first check if the computer enters dormant state or screen saver state. In case of in dormant state, first enter the "Control Panel" to click "Power Management", then select the "Never" option for the "System Waiting" and "Close Monitor" options, so that the computer will not enter the dormant state and the display will function normally. In case of not in dormant state, you can open the case to check whether the control card and communication cable are firmly connected, and check whether the communication cable is disconnected, which can basically solve the above problems.

C: Check whether the communication cable is connected, and check for errors and synchronizing panel. Please follow the connection diagram to connect and check.

D: Check if the green signal indicator of the sending card is flashing.

E: Check if the graphics card settings are normal and the FPD is turned on.

F: Check if the signal indicator on the receiving card is flashing normally.