Well, I know what I did wrong. I thought I was super careful, but I damaged the black connector. (Please pay extra attention to the red warning area in Gunzl’s instructions.) It separates from the board extremely easy. My husband was worried about my taking on this task. I know what I did wrong, but that doesn’t help the fact that I will be purchasing another tablet for him. I’m not sure I will purchase another Samsung, but perhaps all the tablets has such fragile inner workings.