source:other news release time:2023-03-24 Hits: Popular:led screen wholesaler
1. There is a problem with the connection line
This type of problem may occur in loosening and damage to connecting control cards and modules. It is recommended to re -insert the line to observe whether the problem can be solved.
2. LeD display module is damaged
There is a problem with the module short circuit and the module chip. The LED display signal is transmitted from the input signal of the output row of one unit board to the other board, so if there is a problem with a board, it will cause the entire row of the entire row of it to light or abnormal. So when there is a problem with the LED display row, we should replace the abnormal start of this row, or jump this plate directly with a long line, and then see if the back plate is displayed normally. Essence
3. LeD display control card problem
Control card data transmission is errors, but this situation is relatively rare. Open the power supply and see if the control card indicator lights are lit. If it is not on, check whether there is a 5V voltage power supply. Can the LED display display the content? If the content can be displayed, it means that the content of the control card display content is good; Then use the control card software to find the control card. If you can find it, it means that the function of the control card sends well; if you can't find it, check if the communication line is connected. It may be a problem with the card. As long as these two functions are good, the control card is good, otherwise the control card will be replaced.
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