LED display has: computer control part, display drive matrix, led display array, power supply four large parts.
Among the places where there are more problems:
1. Interface problem. Phenomenon: Computer information cannot be displayed, check cable
2. Power problems. LED display uses low voltage and high current power supply, which is not much different from ordinary DC power supply.
3. Drive the problem. Each row or column is not displayed, that is, the corresponding drive circuit (chip) problem, you can replace it.
4. Display the problem. Long-term use of the LED display may damage the aging, repair and replacement.
LED display common troubleshooting process - diagnostic process:
1. Determine if your display is a synchronous display or an asynchronous display; the display of the synchronous display depends on the settings of the display, and the asynchronous display does not depend on the display settings;
2. Determine if your display is a partial display problem or if there is a problem with the entire display;
If the partial display is abnormal, the communication problem can be eliminated. Generally, it is determined that the display hardware has failed. You should contact us immediately to prevent the fault from expanding.
There are several reasons why the entire screen may not be displayed properly:
For the synchronous display, you should confirm whether the display settings are changed, whether the communication is normal, whether the transmission is normal, and then whether the reception is normal;
For an asynchronous display, you should first confirm the parameters of the display: hardware address, width, height, IP change, if these parameters are correct, then test whether the communication is normal, and finally determine whether the display control is normal display unit board interface.
The display consists of a single piece of display unit board, and the signal is transmitted through a flat cable.
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