LED display black screen is actually the best troubleshooting and solve all the problems, we will these problems and solutions were summarized and finishing, the face of the LED display screen, no longer be helpless!
Fault 1: LED display full screen black screen
Check the way: first check whether the power supply is powered. Check whether the control panel is open, whether the communication line is plugged in, whether the sending card is plugged in, whether the data card between the multimedia card and the capture card and the sending card is connected, and the receiving card switch position is correct. Treatment: to determine the power supply power, open the host, the communication line is inserted, send the card re-inserted, re-connected to the media card and capture, send data between the card line. Adjust the switch position. Note: When prompted to start the LED can not find the control system COM port to the data between the sending card signal that the acquisition line is not connected or the computer itself COM port is bad, you need to connect the data cable or even replace the computer.
Fault 2: The whole unit board is black
1, check the signal line is normal, check the upper and lower modules corresponding to whether the connection is connected.
3, check the signal line output pin to the module pin is connected.
4, a few pieces of continuous horizontal black screen, check the normal unit board and abnormal cell board between the cable connection is connected; or chip 245 is normal,
5, continuous vertical direction of a few boards do not light, check the column power supply is normal.
Processing mode: If the signal line is normal, then re-connect the module up and down, the signal line output pin to the module pin, re-plug the normal cell board and abnormal cell board between the cable to ensure that the power supply is normal.