I purchased a replacement USB board on Amazon provided by ifixit for my Nexus 7 (2013) tablet. The installation was easy, but after turning on my tablet the left half of the screen would not respond to touches. Charges fine though (which is why I bought the part). I let the tablet charge then I swapped the old part back in. Viola! Screen works fine. Is there another step I need to perform with this new part or should I send it back for replacmenet?