Before Cleaning

Please visually inspect if there is any physical damage or Scratches?

Please clean the touchscreen with Microfiber cloth and Distilled water and vinegar or commercial touch screen cleaning agent

3 STEPS

1. Turn off the touch screen and any devices connected to it before cleaning it. You minimize the risk of damage to the device. You’ll be able to see smudges, dirt, and debris when the screen is off.

2. Using a microfiber cloth, brush it across the screen in small, concentric circles – think “wax on, wax off.”

3. If any dirt or smudges remain, dampen the cloth with a 50/50 mix of vinegar and distilled water or commercial cleaning agent. Never spray the cleaner on the screen; always spray the cleaner on the cloth. Never use anything paper-based since paper products can scratch the screen. Regular water can be used, but distilled won’t leave water spots.

4. (BONUS TIP): Decide on a set time to clean your touch screen and stick to the schedule. Habits are easier to maintain, and your touch screen will look brand new for months to come.

Before Cleaning.

After cleaning

Or you might consider to add a very thin protective film or sheet as well.

Software: It's better to uninstall other touch driver completely before install resistive touch one. Touch driver/tool does not installed properly or confliction with others will cause touch malfunction.

Download Drivers

http://home.eeti.com.tw/drivers.html

Touch Controller:

When touch driver tool install in system, for example, most of resistive touch will installeGalaxtouch of EETI, when touch connect to PC via USB or RS232, the tool will show touch device (USB or RS232) and in device manager of Windows OS, in “Mice and other pointing devices” will show “Touch Screen Controller (Universal)” or “Serial Touchscreen Controller (ComBus)”.

Without touchscreen connect to controller, normally with controller connect to PC only can run calibration function of touch tool. If controller can run to“4 Points Calibration”, and by“Clear and Calibrate” then escape the job the “Linearization Curve” will be cleaned to default, that means controller is normal, otherwise failure of controller.

Bad linearity: First run “clear and calibrate” and set tool parameter to default with edge compensation, then by “draw test” of tool to confirm linearity issue.Check cable betweenTouchscreen and controller without bad contact. It’s better to remove bezel form touch screen if possible make sure no constant point at edges. Inspect edge and surface if Touchscreen got crack or damage. The followingpicture shows touchscreen failure that with crack at corner

Large offset: Check if touch slip or displacement in assembly, and set the “edge compensation” settings to default and do “clear and calibrate”.

Failure by Intermittent, sometimes can work sometimes not: Check if cable with bad contact and do “clear and calibrate”.