LCD advertising machine display problem

Advertising machines are classified into electronic products, but electronic products are often short-circuited from time to time. Advertising machines display electronic products. If the screen does not display content, then the advertising machine will completely lose the meaning of promotion. So today I will teach you how to deal with advertising machines. Screen short circuit common problem.

1. LCD advertising machine white screen

(1) If the screen of the LCD advertising machine suddenly turns white, there is no picture, and there is no sound when it is displayed, it may be because the main board in the advertising machine is damaged. Solution: In this case, first check whether the motherboard is damaged. If not, then reboot. If it is a white screen caused by damage to the motherboard, you can only go to the manufacturer to replace the motherboard.

(2) If the screen is blank, there is no picture, and there is sound, most of this situation is caused by the failure of the screen cable. Just check the screen cable on the back of the LCD advertising machine and connect it well.

2, LCD advertising machine black screen

(1) If the LCD advertising machine has a black screen and no sound, it may be caused by the lack of power on the advertising machine. Then we can check whether the power supply of the motherboard is on from the place where the card is inserted, and check whether the power supply is plugged in. Then check whether the power switch in the machine is turned on, that is, press the POWER button on the remote control.

(2) If the advertising machine has a black screen but there is a sound, it may be that the high-voltage bar is damaged or the motherboard is damaged. At this time, check whether the link between the high-voltage bar of the advertising machine and the screen motherboard is detached, and it can be connected. Then, What should I do if it’s not a link problem? At this time, we need to check whether the high-voltage bar is damaged. You can check from the card to see if the screen backlight is on. If it is on, it means that it is not damaged. If the high-voltage line is broken? , that is not the problem of the high-voltage bar or the disconnection. The only part of the motherboard is the main board that has not been investigated. Check whether the pins of the CF card socket of the main board are bent or short-circuited. You can remove the card and check whether the screen is turned on normally.