As per the comment from travishansen1993 it can be quite difficult to get all three of the connectors from the screen assembly to connect properly again after removing./replacig the screen.[br]
The first cable to be connected is the touch sensor, and seems to be the hardest, and my touch sensor wasn’t working at all after replacing the screen. travishansen1993’s comments inspired me to try again, and it took a while to really get that first connector properly attached, (pressing down with the plastic spatula tool) after which it all worked perfectly again. :-)