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For example, after a period of use or when the lcd advertising machine is just opened, it will automatically close. In order to identify whether lcd advertising machine's menu settings are in the state of being turned off on time; The machine is short-circuited, and the motherboard can be replaced; If the high-voltage rod does not work normally, replace it; Remote control failed.

When lcd advertising machine starts, there is no sound and the screen does not display. This may be because the indicator light on the front panel is flashing. If there is no sound, open the back cover of lcd advertising machine, use multimeter to check whether its driving board is electrified, and then check whether the horn cable is connected normally. If the horn is noisy, the driving board of the advertising machine is damaged and can be replaced. If it is not displayed on the screen, the user can check whether the signal connection between the monitor and the computer is firm, and carefully check whether there is any problem with the interface of the signal line. If it is damaged, replace the plug in time, such as bending or breaking.

These are the three common problems in lcd advertising machine. You can leave a message for consultation if you don't understand.