SOURCE: the touch screen is not working properly when you
Turn the unit off and make sure the power cable is disconnected as well, get a good SCREEN cleaner. Not the same as Windex or other product. Clean the screen well, you need to get rid of the oils and dirt on the screen. Once you are finished and the unit has been dried off power the unit back up and in one of the submenus you will find a screen calibration option. Use this and you should then be finished and the unit should go where you touch. Hope this helps
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