How to replace touchscreen? - HP Photosmart C8180 All-in-One InkJet Printer

If there is physical damage to the touchscreen, then it can become unresponsive and will need to be replaced. The touchscreen is bonded to the glass (they are one piece), so both the touchscreen & glass will need to be replaced, even though the glass may not be cracked. Please see this link for more information and how to have the touchscreen replaced for you.


SHARCNET USA Out of Warranty GPS Digital Camera Repair

If you have tried to recalibrate it and it still is unresponsive, then the touchscreen needs to be replaced. More info on touchscreen replacement can be found here:

http://www.sharc.net/gps_LCD_repair.htm

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

Two thing can cause this. If your unit is running firmware version 5.3, this version has a bug where the touchscreen will work for about 5 seconds then the unit will lock up. Updating the unit to version to version 5.4 will fix the problem. More info can be found here:

http://www.sharc.net/discus/messages/6/471.html?1337567850

http://www.sharc.net/discus/messages/6/469.html?1333569932

If you are running firmware version 4.9 or 5.4 and the touchscreen still does not respond, then the touchscreen will need to be replaced. On the Nuvi 7xx, the touchscreen may be soldered to the LCD display, so if you don't have any soldering experience, please have a professional replace the touchscreen. More info can be found here:

http://www.sharc.net/gps_LCD_repair.htm

You should not be having to constantly reset the Nuvi to make the touchscreen operational. The touchscreen is defective and needs to be replaced. I've replaced over a thousand 660 touchscreens and through my experience, a non-responsive touchscreen is caused by a defective touchscreen.

More information can be found here:

http://www.sharc.net/gps_LCD_repair.htm


- Jim

Contact LG, check Ebay, google it.

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

sir please visit your nearest mobile repaire shoppe

You just need to buy a replace touchscreen. You can replace it. They run about 15 dollars from ebay and are pretty straight forward. Here is a link on how to replace the touchscreen on the Ku990.

How to replace touchscreen on LG Viewty KU990

The touchscreen replacement isn't too bad if you've got some technical knowledge, about 1 hour and a lot of patience.
I'd get the new touchscreen from a popular web auction site and the replacement is quite straightforward but fiddly, if you can wait for the new touch screen to arrive in the post, have a tri-wing screwdriver and a lot of patience you might as well go for it. Just take great care when replacing the bottom case to line up the power switch (and volume control) with the external plastics so as not to cause any damage as a broken power switch isn't an easy replacement.
HTH