Touchscreen not working

There are a few potential reasons why the touchscreen on your Konka TV Android device might not be working properly. Here are a few things you can try to troubleshoot the issue:

1. Restart the device: Sometimes, a simple restart can fix issues with the touchscreen. To do this, turn off the device and then turn it back on again.
2. Check for updates: Make sure that you have the latest software updates installed on your device. Updating the software can sometimes fix issues with the touchscreen.
3. Clean the screen: Dust and dirt can build up on the touchscreen and interfere with its operation. Try cleaning the screen with a soft, dry cloth to remove any debris.
4. Check for hardware issues: If the touchscreen still isn't working after trying the above steps, there may be a hardware issue. In this case, you may need to have the device inspected by a technician or bring it to a service center for repair.

If you are still experiencing issues with the touchscreen on your Konka TV Android device after trying these steps, you may want to contact the manufacturer or a qualified technician for further assistance.

Check all drivers are loaded for the touchscreen interface, if they are remove them and re-install.

If that doesn't solve your issue I would check the cable that connects the touchscreen and that the touchscreen is fitted correctly.

Sounds like a touchscreen problem, itself.
The touchscreen is NOT part of the LCD screen itself, but when you go to replace, the two units are combined; and sold as one unit.
Examples. NOT advertising. You may find better prices from your search, and reputable dealers also,
http://www.ebay.com/itm/GENUINE-DELL-2305PC-TOUCH-SCREEN-WITH-CABLES-LTM230HT05-/290892243884?pt=US_Laptop_Screens_LCD_Panels&hash=item43ba8763ac

http://www.ebay.com/itm/Samsung-23-Touchscreen-09TW8H-LTM230HT05-Dell-Inspiron-One-2305-/261131794988?pt=LH_DefaultDomain_0&hash=item3cccaafa2c

The different views help me explain the Touchscreen.
The touchscreen uses the Capacitive Sensitive system. Each area on the touchscreen has a separate CS unit for it,
http://en.wikipedia.org/wiki/Touchscreen
Which is what makes me think with two keys not working, the touchscreen is the problem.
For additional questions please post in a Comment.
Regards,
joecoolvette

My touchscreen on Garmin nuvi 1390 not working too and .calibration it's help alsoI did twice hard reset my GPS Garmin Nuvi 1390 and nothing happening and after I tried different trick,when I turned GPS off I hold the top left corner screen.The screen exchange for calibrations and I pressed several times according request and my GPS Garmin Nuvi 1390 started work,but repairing company wanna charge me $100 Canadian dollars.I didn't connect GPS to computer

b> The Touch Pro2, manufactured by HTC, is a smartphone designed to be used with the Verizon wireless phone network. This smartphone combines a cell phone, PDA, MP3 player and wireless Internet access into a small, portable device. If the device begins malfunctioning or freezing, you can perform a soft reset. A soft reset does not delete any of your saved information. It shuts the phone down and reboots the phone to the Verizon Today Welcome Screen.

Pull the stylus upward to remove it from the side of the phone. Push the back cover upward using your thumbs until it pops from the back of the Touch Pro2 phone. The back cover can then be lifted away and removed from the phone. Press the "Reset" button, on the upper, left side of the back panel using the stylus tip. The device will now restart and display the Verizon Today screen. Snap the back cover back onto the back of the phone. Touch Screen is Not Working
As most tablet PCs ,Phones and Mp3 players are full touchscreen devices, you use your touchscreen for everything you need to do on your Tablet PC. If the touchscreen stops working, you can't get much use out of your Tablet. Touchscreen issues are caused by hardware or software problems, but check with your manufacturer before attempting a DIY repair.

Hardware Issues Damages to the surface of your Tablet PC can cause the touchscreen to malfunction or stop working entirely. For example, putting pressure on the screen, such as placing the Tablet PC in a bag with other heavy items, can cause cracking along the screen. Exposing the screen to water, even in small amounts, can cause the electrical system within the touchscreen to malfunction. If the electrical system malfunctions, the touchscreen stops working properly. b> Screen Sensitivity b> Pressing the touchscreen on your Tablet PC sends a signal to the internal motherboard. The motherboard then transmits to other components, such as the hard drive. The accuracy of the touchscreen depends on the screen's sensitivity. Many Tablet PCs include a program for calibrating the touchscreen. This program may fix minor responsive issues. Even a small amount of dirt or debris can effect how the touchscreen responds. Cleaning your touchscreen with an electronics cleaner or a microfiber cloth may help improve sensitivity. b> Software Issues b> A driver is a software program that interacts between hardware devices and an operating system, Your Tablet PC needs the right drivers for your OS to work correctly. Outdated or missing drivers can cause the touchscreen to work improperly, or not respond at all. Visit the manufacturer's website to find the right drivers for your Tablet PC. b> Repair b> While you can perform some minor repairs yourself, such as re-calibrating the touchscreen sensitivity or installing drivers, only perform a hardware repair if you have a good working knowledge of electronics, specifically Tablet PCs. Before attempting to repair your device, contact your manufacturer. If your Tablet PC has a warranty, completing an unauthorized repair may make you ineligible for claiming that warranty. Hope this helps

b>

Try taking out the battery and put it back in...

Hi.
Based on the information you have provided, it seems that the issue is due to the Driver for the Touchscreen sensors.
As you have changed the Operating System, it is required to install the Touchscreen Device Driver for the Windows 7 Operating System.
Once the Driver is installed, the Touchscreen Device should work normally.
Please let me know the exact Model # of the Computer, so that I can provide you the link to download the Touchscreen Driver.
Hope this helps.
Please feel free to contact for further information and assistance.

if the unit is new, kindly contact the vendor for tech-help.

i think you need to change your touchscreen
i hope i can help you

You may be able to go the TomTom website and download the last update programming. If the problem is software this should fix it.