Correct equipment, operation and maintenance of reducer is an important part of ensuring the normal operation of mechanical equipment. Therefore, in your device, first check whether the wiring interface is loose, and then check whether the serial port and interrupt number are conflicting, if there is resistance, you should adjust the resources to avoid resistance. Then check whether there are cracks on the surface of the touch screen, and if there are cracks, they should be replaced in time. It is also necessary to check the surface of the touchscreen for dirt and, if so, remove it with a soft cloth. Investigate to see if the indicator light on the control box is working properly, and when it is normal, the indicator light is green and flashing.
If the above parts are normal, you can use the replacement method to view the touch screen, replace the control box first, then replace the touch screen, and then replace the host.
If it is a resistive touch screen, it can be overhauled as follows:
1) Check whether the connection of the touch screen is correct, and whether the connection of a cable connected to the keyboard port of the host (take 5 volts from the keyboard port of the touch screen operating voltage) is connected, please check the connection.
2) Investigate the situation of the touch screen control box light, if it is not lit or the red light is on, it means that the control box is broken, please replace it.
3) If you confirm that this is not the case, please delete the touch screen driver and re-start the computer to re-install the driver, or replace the driver with a newer version.
4) Check whether there are any devices in the host that conflict with the serial port resources, check the hardware devices and adjust them. For example, if the default IRQ of some NIC devices is 3, which conflicts with the IRQ of COM2, the IRQ of the NIC should be changed to the IRQ that is not used in idle time. It may be that the computer motherboard and the touch screen control box are not compatible, please replace the main unit or motherboard.
5) If the touch screen is used for a long period of time (3-4 years) and you find that some areas of the touch screen cannot be touched, it may be that the touch screen is broken, please replace the touch screen.
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