As LED displays become more and more popular, LED screens can be seen everywhere in the streets and lanes to play text, pictures, videos and other information. However, in the process of use, we will find a bright line on the LED display . In order to make its playback more perfect, how to solve the LED display bright line ? LED display manufacturers for your analysis. First, there are three reasons for the bright line on the LED display. 1 , product quality is not off. When buying, don't try to buy cheaper products with lower quality. 2 , the voltage is unstable. Causes leakage. 3 , improper operation method, human error, affecting the effect of the display. Second, there are three solutions 1. Determine if the power supply is damaged First of all, judge whether the power supply is damaged or not. Because a power supply controls several cell boards at the same time. You can measure whether the output voltage is between 4.9 and 5.5v . If it is not within this range, it is likely that the power supply is broken. 2. Determine if the control card is damaged. First turn on the power, see if the control card indicator is lit ; if it is not lit, check if there is 5V voltage supply, LED electronic screen can not display content, if the content can be displayed, the control card display content function is good ; then use the software to find what control card control card, if they can find the words, it indicates good control card to send the contents of the function; if not find, then check the communication lines are not connected, if connected well, It is very likely that there is 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. 3. Check if the unit board is damaged. 　　 The signals on the LED display are all inputs from one board to the other. So if there is a problem with one board, it will affect the back board. So check each one to see if the cell board is working. After you find out the problem yourself, repair it for the damaged situation. If you can't repair it yourself, you can contact the manufacturer or send it to the manufacturer for repair. For serious damage, the maintenance technician can be repaired on site to ensure that the LED display can be used normally. Socket Connector,Board-To-Board Socket Connectors,Horizontal Socket Connector,Screw Male Socket Connector Shenzhen Jinyicheng Electronci Technology Co.,Ltd. , https://www.jycconnector.com