1: The entire screen is not displayed

1. The AC distribution cabinet is not turned on - turn on the switch of the distribution cabinet;

2. The computer stops working - turn on the computer and make it work;

3. There is no signal from the sending card and the green light does not flash - set the graphics card to enter copy mode. If the problem still cannot be solved, change the sending card;

4. The signal line that sends the card to the screen is disconnected - check the communication line, and if the problem still cannot be solved, replace the network cable;

2: The entire screen display is abnormal

1. The internal program of the receiving card is incorrect - resend the receiving card program;

2. There is a problem with the computer graphics card or video source - replace the graphics card or video source;

3. The DVI cable of the sending card is loose - re-insert and secure the DVI cable;

Three: The entire screen is not connected together

1. The screen-joining program was not sent - re-send the screen-joining program;

2. The program signal routing is inconsistent with the actual routing - check the on-site signal routing again and reset the screen connection program;

Four: Water ripples appear on the LED screen

1. The graphics card is of low quality and cannot play high-definition videos - replace it with a better graphics card;

2. The refresh rate of the screen is set too low - readjust the parameters to increase the refresh rate of the screen;

Five: A single LED box does not light up

1. The red power indicator light does not light up and the power supply is out of power - check whether the power cord is connected. If not, replace the power cord. If there is no effect, replace the power supply.

2. The green signal indicator light flashes abnormally or does not light up - check whether the receiving card has power and whether the signal line is connected. If the signal line is connected normally, replace the receiving card;

Six: A single LED module has no display

1. The module displays dark red and the module is not powered - check whether the power terminal connected to the module is loose. Now reconnect the HUB board and the module. If there is still a problem, replace the HUB board. If the problem persists, replace the module;

2. The module has no display and there is a problem with the module - replace the module directly;

Seven: A single module is missing color and some parts are not bright.

1. There is a problem with the internal components of the module - replace the module directly;