update the driver.

according to the instruction manual, check whether the video card and monitor can meet your required performance. If everything is all right, it's a monitor failure, and you can only contact the maintenance center to solve it.

take off the advertising machine, take off the key of the back cover of the advertising machine, open the back cover of the advertising machine, and check whether the special power supply of the advertising machine is powered on, whether the current material falls off or is loose, and whether the indicator light is on when it is used for 11,111 yuan. If the power supply is powered on, check whether there is power on the decoding board, then check whether there is power on the driving board of the advertising machine, check whether the high-voltage bar is powered on, check whether the horn is ringing, check whether the LCD screen is powered on, and whether there is power on anywhere.