Geschiedenis van "The aproximity sensor not work"

I buy the LCD and the touch screen on eBay all was ready to mount when I turn on the cellphone all was fine them the LCD turn off i press the power bottom and run normally at the pass of the second do the same again it was normal with the broke screen when I put the new one I got that problem

What could I do to fix that problem?

Toestel:

Samsung Galaxy Mega

Status:

open