I have the same issue. After reassembling my ps4 controller, I noticed that once I pressed the touchpad in my controller discounted. It would not turn back on, or even light up, so I decided to press the reset button. This worked and my controller turned back on, but after pressing the touchpad once again my controller disconnected. I opened my controller and pulled all of the ribbons out and put them back in again. This did not work and my controller refuses to even light up now, even after pressing reset. Does anyone have any idea how to fix this, or know what has happened? All help is greatly appreciated :)