Can’t turn on the pos machine.

1.First check whether the light of the power adapter of the pos machine is on, if not, please try to change the power supply and turn it on again.

2.If the power supply is normal and the screen does not respond after booting, please check whether the red light of the memory on the mainboard is on after booting.

3.If the red light on the mainboard is on, please check whether the connection line of the LCD screen is loose or deformed. If the connection line of the monitor is loose, please re-plug and unplug it.

4.If the screen still does not respond after re-plugging and unplugging, may need to replace the LCD screen.

5.If the red light on the mainboard is not on, may need to replace the mainboard.