LED display assembly comparison of common problems
What does active or manual brightness adjustment mean?
Brightness adjustment refers to the adjustment between the darkest and the brightest the display can show. It is not a light-sensitive adjustment.
Active brightness adjustment is based on different time periods should be presented by the LED electronic display control system to actively adjust to a predetermined brightness.
Manual brightness adjustment refers to the end user through the LED display control system operation to make the LED display to a specified brightness.
Why is the controller all normal when the display does not show above?
Controller settings and articulation line connected properly, sometimes the LED display screen will not show the situation, generally formed by one of the following reasons, please check against:
A. Whether the LED display is normally powered on.
B．Whether the wires between the HUB distribution board and the display are reversed.
C．Whether the modified and sent program is empty．
The unit board shows that the whole screen is not bright, dark and bright.
A．Visually check whether the power connection line, the 26P cable between the unit boards and the indicator light of the power module are normal．
B. Use a multimeter to measure the unit board with or without normal voltage, and then measure the power module voltage output is normal, if not, it is judged to be a bad power module.
C. Measure the power module voltage is low, adjust the fine-tuning (power module close to the indicator at the fine-tuning) so that the voltage reaches the norms.
What is the cause of the LED display black screen?
In the process of controlling the use of the system, we will occasionally encounter the phenomenon of LED display black screen. The same phenomenon may be caused by a variety of different reasons, even the process of display black will be due to different operations or due to different environments. For example, it may be a power-on moment is black, may also be black in the loading process, may also be black after the completion of sending and so on. Please note that this phenomenon can refer to the following aspects to determine the “problem”:
A. Please ensure that all hardware, including the control system has been fully and correctly powered up. (+5V, do not reverse, wrong)
B. Check and double-check whether the serial line used to connect the controller is loose or fall phenomenon. (If black in the loading process, it is likely to be due to the formation of this reason, that is, in the communication process because the communication line is loose and interrupted, so the screen black. Do not think that the display body does not move, the line can not be loose, please start to see, it is important for you to want to quickly solve the problem．)
C. Check and confirm that the LED display and the main control card connected to the HUB distribution board is tightly connected, whether or not the plug is reversed.
