A touch screen does not work, and it does not respond when you touch any part.

[Fault analysis and processing]

First check whether there is looseness in each wiring interface, then check whether there is conflict between serial port and interrupt number. If there is conflict, adjust resources to avoid conflict. Then check whether there are cracks on the surface of the touch screen. If there are cracks, replace them in time.

If all the above parts are normal, you can use the replacement method to check the touch screen, first replace the control box, then the touch screen, and finally the host.

The following maintenance can be performed:

1) Check whether the touch screen connection is correct. One of the connections to the keyboard port of the host (take 5 volt touch screen working voltage from the keyboard port) is connected, please check the connection.

2) If it is not confirmed above, please delete the touch screen driver and restart the computer to reinstall the driver.

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

A five-wire resistive touch screen. Touching the part of the display screen with your finger cannot complete the corresponding operation normally.

[Fault analysis and processing]

This phenomenon may be a problem with the proofreading of the resistive screen.

The screen calibration program can be run in the following cases: (Open the touch screen software proofreading program on the desktop)

1) Complete the driver software installation for the first time.

2) After changing the resolution or display mode of the monitor each time.

3) After changing the displayed display area each time.

4) After adjusting the frequency of the controller each time.

5) Every time the cursor and the touch point cannot correspond.

After calibration, the calibrated data is stored in the controller's registers, so there is no need to calibrate the screen after each system startup.

A touch screen takes a long time to respond after touching the display screen with a finger.

[Fault analysis and processing]

This may be caused by a host computer virus or system chaos.

1) Check the host for viruses first, and if so, kill the virus first.

2) If there is a problem with the system, check whether it can be adjusted. If not, reload the system.

A touch screen, after touching the display screen with a finger, there is no response in some places.

[Fault analysis and processing]

It may be that the touch screen is partially scraped off by a hard object and cannot be repaired.

A touch screen, everything is normal after testing, but the computer cannot operate after connecting to the host.

[Fault analysis and processing]

It may be that before the host starts to load the touch screen driver, the touch screen control card receives the operation signal, and only needs to power off and then restart the computer.

A touch screen, the touch screen does not respond for the first time after installing the driver.

[Fault analysis and processing]

First, make sure the touch screen lines are connected correctly. If not, connect all lines properly after shutdown. Then check if there are any devices in the host that conflict with the serial port resources, check each hardware device and adjust them.

A touch screen, no response after normal use for a period of time after booting.

[Fault analysis and processing]

Check if the hard disk is turned off in the "Monitor Power Save Settings" of Wlndows. The method is to right-click on the desktop, select the "Properties" command, then select the "Screen Saver" tab from the dialog box, click the "Settings" button, and set the parameter to "Always On" except "Power Scheme" In addition, the rest are "never."

With a touch screen, the click accuracy is reduced, and the cursor is difficult to locate.

[Fault analysis and processing]

1) Run the touch screen calibration procedure.

2) If it is a newly purchased touch screen, please try to delete the driver, and then power off the host for 5 seconds and then reinstall the driver.

[Fault analysis and processing]

1) It is possible that before the host starts to load the touch screen driver, the touch screen control card receives the operation signal. Please power off and restart the computer and recalibrate.

2) The driver installation may be abnormal. Please delete the driver and reinstall. (Remove from the Control Panel Add and Remove Programs.)

[Fault analysis and processing]

This occurs because the touch area of ​​the resistive screen (the surface of the resistive screen is divided into two parts: a touch area and a non-touch area, and there is no response when you click on the non-touch area). The point is always touched. If the cabinet shell presses the touch area, you can increase the distance between the cabinet and the monitor screen. If the monitor shell presses the touch area, you can try to loosen the screws of the monitor shell.

A touch screen works extremely unstable, sometimes it can click normally, but sometimes it doesn't respond.

[Fault analysis and processing]

In view of this phenomenon, it is important to check whether the wiring interface is loose, and whether the serial port and the interrupt number conflict.

A touch screen, the screen is dimmed, the colors are not displayed properly, but the operation is no problem.

[Fault analysis and processing]

The cause of this situation may be that the color mode is set incorrectly under the 2000 system operation, or the screen is not released properly because the screws are too tight when installing the touch screen. If you insert a ps2 mouse or keyboard in it120, the screen may also appear Dimming does not display normal colors.

Approach:

1) Right-click on the system desktop, select Properties, enter the Settings-Advanced window, select the S3Gamma plus tab, and then adjust the color.

2) Disassemble the cabinet, loosen the screws of the touch screen to see if the normal color is restored, and adjust the tightness appropriately.

3) Replace the mouse or keyboard of ps2 with the mouse and keyboard of USB interface.

A touch screen, the boot is normal, but the touch screen is not displayed.

[Fault analysis and processing]

This phenomenon may be because the wiring of the screen is not connected properly. If it is an all-in-one, the wiring in the touch screen may be loose or broken. You can recheck whether the wiring of the screen is fully connected. If the screen is connected, the instruction screen is not displayed out of order.

A machine alarm appears during startup, and the machine cannot start normally.

[Fault analysis and processing]

This situation may be because the memory or graphics card is not plugged in or damaged, but most of the time is the memory is not plugged in. This situation can be reinserted and tested, you can replace the test memory and graphics card. What is the problem, then replace it.

After booting up, the screen will display a screen, and the machine can be used normally.

[Fault analysis and processing]

This situation may be caused by the inadequate connection between the screen and the motherboard. You can check whether the connection is firm and the connection is correct. If there are problems, you can return to the factory for repair.