2021/04/16｜By G Editor.
Touch function stops working suddenly when you use the touch monitor or laptop? Have troubles such as touchscreen is unresponsive, touch screen input is offset or writing is intermittent? Let’s troubleshoot these common touch issues and fix them pronto!
When encountering touch problems, please check whether the hardware connection is correct first.(The screen of touchscreen laptop is integrated all-in-one, and the wiring is inside the case. Usually, it is not necessary to check hardware connection problems. You can move forward to next part for software settings.)
If the external monitor can not work touch function properly, the common hardware issues are as follows:
External touch monitors usually adopt the USB interface to transmit touch signals. If the USB ports on either side of the computer or touch monitor is faulty, the solder pins are tin stripped, the pin tongue is loose, etc., the touch may be intermittent, unusable, or the screen may not light up at all.
This happens more likely if you plug and unplug the cables frequently. Please re-insert the cables again to ensure the cables are inserted into the right ports and the plugs are not shaky or loose. If the touch screen still does not work, try to buy a new cable from the original manufacturer!
Grease and dust can potentially cause poor electrical sensing on touch surfaces. Use a lens cloth to gently wipe the touch screen and wipe with a little water for the tough stains. Do not spray too much water or detergent.
When touch function stops working, check whether Windows Update and BIOS are updated to the latest version. If it still does not work, follow the following settings step by step to resolve possible problems!
If the USB driver on Windows 10 is not successfully updated, not only the external touch screen cannot be activated, but other USB devices may encounter problems.
Right click [Start] → [Device Manager] → [Universal Serial Bus controllers], you can select [Update driver] directly or select [Uninstall device] and then restart the computer. Windows will automatically install the driver after rebooting.
Connect the monitor to the computer and go to [Device Manager] → [Human Interface Device]. If the touch monitor connection is successful, the touch screen will appear in the list of Human Interface Devices. Right click the touch screen and follow the steps to update the driver.
Click [Start] → [Control Panel] → [Tablet PC Settings], and then click [Setup] under the display tab. When "Tap this screen with a single finger to identify it as the touchscreen" appears on the screen, just touch the screen.
● Step 1. Check the Resolution Setting
If the resolution setting does not match the screen, the touch position will also be affected. For example, when you touch certain positions on the screen, it responds on correct points, but clicks on other positions may activate other areas next to them instead.
When the cursor is on the desktop, right click for the setting menu → click [Display settings ] → choose the touch screen (number 2 screen) and select the corresponding resolution(for example, On-Lap M505T resolution is 1920x1080), and then click "Apply".
● Step 2. Calibrate Touch Input
Click [Start] → [Control Panel] → [Tablet PC Settings], or search for [Calibrate the screen for pen or touch input]. Open [Tablet PC Settings] and select your external monitor from the drop-down menu of Display → Click [Calibrate] → Tap the crosshair each time that it appears on the screen. → click "Yes" to save the calibration data .
Touchscreen laptops and smartphones usually need to be paired with a dedicated stylus. For On-Lap series touch monitors, you can choose a passive stylus with a conductive rubber or plastic disc greater than 6mm diameter. The induction of active styluses differs from brand to brand. If your writing or drawing is intermittent, it is recommended to use a stylus with stronger induction (e.g., Adonit Dash3)
Rubber tip stylus
Disc tip stylus
The Mac OS system does not support external touch signals, and the touch monitor can only display images when connected to the computer. This is a limitation of OS compatibility. If you need an external touch monitor for Mac, you can use BootCamp, a multi boot utility that comes with Mac OS. It assists you in installing Windows 10 on Intel-based Mac computers . When you switch your MacBook to Windows 10, you can operate the external touch monitor!
When you connect 15.6-inch On-Lap M505T touch monitor to an Android phone supporting USB Type-C DP Alt, M505T can receive touch, video and audio signals at the same time. However, in case the Android phone OS is not updated to Android 8.0 or latest, you cannot use the touchscreen function on M505T touch monitor.
Note! Not every smartphone with a USB-C connector can be connected to a touch screen. You must inquire your smartphone manufacturer about whether the model supports DisplayPort Alt mode for outputting video signals.
As the projected capacitive touch technology is sensitive to electricity difference, the electromagnetic interference or unstable power current input may cause touch ghost clicks—the screen responds to touches you're not making. In this case, please eliminate the following interference from your environment :
Sockets in public spaces usually have complicated wiring and power adoption. you may experience current fluctuations occasionally. When the power input to the touch monitor comes from these sockets or extension cords, you may encounter problems of not being able to operate touch screen normally.
Please try to stay away from kitchen appliances in use, such as electric cookers, microwave ovens, etc. Even table lamps may emit a lot of low-frequency electromagnetic waves. These electrical appliances that emit electromagnetic interference during operation may affect the use of your touch screen.
We hope the article has helped you to solve the problems of using touch monitors. If you have any other questions about touch screens, please write to GeChic Customer Service or contact us via FB.