Hi everybody first i thank u for yr help .the issue is I bought an alpha vision wf 1189 touch screen car dvd player. And, on the touch screen, i touch the tab "setup" and i entered password "888888" then "eneral setup “interface appeared. And on the setup I touch the tab "touch “after that on blue screen "+"sine appear. The screen calibrate.pls how does the touch command be functional again. On manual there is no solution to solve this problem. Thank you for your help

hroab, April 2011