【 All in one machine malfunction 】 The touch screen of the all-in-one machine computer does not respond. Common troubleshooting methods for touch screen all-in-one machines
Common troubleshooting methods for touch screen all-in-one machines
1. Touch screen inaccurate [fault phenomenon]
A five wire resistive touch screen cannot be operated normally by touching the display screen with fingers.
[Fault Analysis and Handling]
This phenomenon may be due to a problem with the calibration of the resistive screen.
The screen calibration program can be run in the following situations: (Open the touch screen software calibration program on the desktop) 1) Complete the installation of the driver software for the first time.
2) After changing the resolution or display mode of the monitor each time.
3) After changing the display area each time.
4) After adjusting the frequency of the controller each time.
5) Every time the cursor does not correspond to the touch point.
After calibration, the calibrated data is stored in the controller's registers, so there is no need to calibrate the screen again after each system startup.
2. Touch screen unresponsive [fault phenomenon]
A touch screen is not working and there is no response when touching any part.
[Fault Analysis and Handling]
Firstly, check if there is any looseness in the wiring interfaces, and then check if there is any conflict between the serial port and interrupt number. If there is a conflict, adjust the resources to avoid it. Recheck if there are any cracks on the surface of the touch screen, and replace it promptly if there are any cracks.
If all the above parts are normal, the touch screen can be checked using the replacement method. First, replace the control box, then replace the touch screen, and finally replace the host.
The following maintenance can be carried out:
1) Check if the wiring of the touch screen is connected correctly, and if one of the connections to the host keyboard port (taking 5V touch screen working voltage from the keyboard port) is connected. Please check the wiring.
2) If it is confirmed that the above situation is not the case, please delete the touch screen driver and restart the computer to reinstall the driver.
3) If you find that some areas of the touch screen cannot be touched after using it for a long time (3-4 years), it may be that the touch screen is broken. Please replace the touch screen.
3. Touchscreen response time is very long [fault phenomenon]
A touch screen takes a long time to respond when touched with fingers on the monitor screen.
[Fault Analysis and Handling]
This may be caused by a virus on the host or system chaos.
1) First check if the host has a virus, and if so, kill the virus first.
2) There is a problem with the system. Check if it can be adjusted. If not, reload the system.
4. Partial unresponsive touch screen [fault phenomenon]
A touch screen, when touched with a finger on the monitor screen, there is no response in certain areas.
[Fault Analysis and Handling]
This may be due to a hard object scraping off a part of the touch screen, which cannot be repaired.
5. The touch screen is normal but the computer cannot operate [malfunction phenomenon]
A touch screen, after testing, everything is normal, but when connected to the host, the computer cannot operate.
[Fault Analysis and Handling]
This may be due to the touch screen control card receiving an operation signal before the host starts loading the touch screen driver, and simply needs to power off again and restart the computer.
6. After installing the driver program, the touch screen does not respond for the first time [fault phenomenon]
A touch screen that does not respond the first time it is started after installing the driver program.
[Fault Analysis and Handling]
Firstly, confirm if the touch screen wiring is connected correctly. If not, turn off the device and connect all wiring correctly. Then check if there are any conflicts between devices and serial port resources in the host, inspect each hardware device and adjust them.
7. After using for a period of time, there is no response when touched.
[Fault phenomenon]
A touch screen, after being turned on and used normally for a period of time, has no response.
[Fault Analysis and Handling]
Check if the hard drive is turned off in the "Monitor Energy Saving Settings" of Wlndows 2000. The method is to right-click on the desktop, select the "Properties" command, then choose the "Screen Saver" tab from the dialog box, click the "Settings" button, and set the parameters to "Never" except for "Power Plan" which is "Always On".