source:Industry Trends release time:2023-10-07 Hits: Popular:led screen wholesaler
1、 LED advertising screen screen becomes blurred or has bright lines
1. After connecting the screen controller to the computer, HUB distribution board, and screen, it is necessary to provide+5V power to the controller to ensure its normal operation (at this time, do not directly connect to 220V voltage).
2. At the moment of power on, there will be a few seconds of bright lines or "splash screen" on the screen, which is a normal test phenomenon, reminding the user that the screen is about to start working normally.
3. Within 2 seconds, this phenomenon will automatically disappear and the screen will enter a normal working state.
2、 The entire screen of the LED advertising screen unit board is not bright
1. Visually inspect the power connection cable, 26P cable between the unit boards, and the power module indicator light for normal operation.
2. Use a multimeter to measure whether the unit board has normal voltage, and then measure whether the voltage output of the power module is normal. If not, it is judged that the power module is faulty.
3. Measure the low voltage of the power module, adjust the fine adjustment (near the indicator light of the power module) to make the voltage reach the standard.
3、 LED advertising screen screen is completely black
1. Please ensure that all hardware, including the control system, has been properly powered on. (+5V, do not reverse or connect incorrectly)
2. Check and repeatedly confirm whether the serial cable used to connect the controller is loose or detached. If the screen turns black during the loading process, it is likely due to this reason, that is, the communication cable is loose and interrupted during the communication process, resulting in the screen turning black. Do not assume that the screen body is not moving, and the cable cannot be loose. Please check it yourself, which is important for quickly solving the problem.
3. Check and confirm whether the HUB distribution board connected to the LED screen and the main control card is tightly connected and inserted backwards.
4. During the installation and debugging process of LED display screens, installation personnel need to follow the normal installation and testing sequence to avoid problems such as screen damage. If you encounter technical problems, you can contact professional technical personnel for guidance and answers. I usually learn more about the maintenance information of LED display screens, so that when there are faults in the future, I will be more able to handle them with ease.
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Email: Hazel@cri-led.cn
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