I was having the same issue and this tutorial was really great at fixing it https://imgur.com/a/hKeB4
need a Torx T3, (T4/T5) personally I used a T4 but everyone says T5
and a 00 Philips head screwdriver. recommend some form of prying devices and some precision tweezers to reconnect the A5 connector
it is possible yours is still connected just loose, mine was fully disconnected.