problems with screen cables

Good afternoon, after re-replacing The screen of a client, I'm facing some problems with the touch screen technology... After I've taken off the screen glass, only part of the touch sensing was working (bottom-left part of the phone), I've tried taking off the LCD and cleaning up the internals with a towel, but after I've reassembled the LCD, the touch was completely gone. I think (and wish) that it is only a cable positioning problem, but I can't fix it... Need help.