When you replace the LCD be sure to make sure it is screwed in fully. It is easy not, especially on the cornet where the digitizer cables are. The LCD is very sensitive and if you bend it then it can stop working. I was just pressing the digitized in place at the end of a repair and the screen was covered in white lines.

If you insert a regular pick without a gap then you can damage this connector and will need a new motherboard. If in doubt just insert into the left corner enough to raise it a tiny bit. Arguably, if you are not sure, then it is safer just power off and don’t power back on until everything is fully connected. A photo of how this connector looks with its cover off would really help for people that have not seen this type of battery connector before. You just need to get it to lift a tiny bit, Do not try to slide anything under the contacts….