Troubleshooting and repair of touch screen failure of touch all-in-one machine

Troubleshooting and repair of touch screen failure of touch all-in-one machine

It is not uncommon to touch the all-in-one machine now. It is a common fault that the touch screen does not respond. The touch screen of the all-in-one machine does not work and there is no response to touching any part, that is, it has failed. What should I do if the touch screen suddenly fails? Here are some troubleshooting and repair methods for common touch screen faults of touch all-in-one machine.

1. Check wiring

If it is a USB interface, unplug and plug the USB cable of the touch all-in-one machine again. If not, check whether the USB cable is intact. If the USB cable is also good, check whether it is the USB interface of the host. At this time, we can plug the USB cable of the mouse or keyboard. If there is a problem with the USB interface or USB data cable, just replace it; Then check whether each wiring interface is loose, and then check whether there is conflict between serial port and interrupt number. If there is conflict, adjust resources to avoid conflict; Then check whether the connection of the touch screen is connected correctly, and whether one of the connection connecting the keyboard port of the host (take the 5V touch screen working voltage from the keyboard port) is connected. Please check the connection. If it is a detachable structure, please recheck that all parts are well connected and the connecting wire is not damaged.

2. Troubleshooting hardware

Enter the device manager of the LCD touch all-in-one machine, Check whether the touch screen hardware can be found (you can unplug the connecting cable to observe whether there are devices in the device manager or disappear), and then check whether there are cracks on the surface of the touch screen. If there are cracks, replace them in time. If the above parts are normal, check the touch screen with the replacement method, replace the control box first, then the touch screen, and finally the host.

3. Calibrate touch screen

The infrared touch screen calibration of the touch all-in-one machine. The calibration process of the infrared touch screen is generally as follows: display some marks (such as "+") at several different positions of the screen in turn, click these marks with a touch pen or finger, and four points will appear on the infrared screen in turn. Press the upper left, upper right, lower left and lower right to complete the calibration.

4. Troubleshooting software

First make sure that the touch screen driver is correctly installed in the computer host. If it is confirmed that it is not the above situation, please delete the touch screen driver, restart the computer, reinstall the driver, and click to obtain the latest driver of each system. If this method still fails, it is necessary to consider that the touch software runs too much at the moment, resulting in insufficient memory of the touch screen all-in-one computer, resulting in no response. Then the short-term solution is to restart, but to solve it in the long term, you need to increase the memory module.

5. Screen itself

If the touch screen is used for a long time (3-4 years) and some areas of the touch screen cannot be touched, the touch screen may be broken. Please replace the touch screen.

If the above methods still fail to solve the problem, it may be the failure of the all-in-one touch screen caused by the configuration error in the system. You can try to repair it according to the following steps.

1. First, go to the desktop in the computer, and then right-click in any blank space to select display settings:

2. Then, you will go to the control panel, find the display option on the left, find the display adapter attribute in the sub option of the display option, and click it:

3. Then, click color management in the pop-up window:

4. Continue to click the color management button in the window that appears:

5. Finally, click calibrate the display under display calibration, and the computer will automatically calibrate the settings in the display. After calibration, there will be no problem of touch screen failure.