Macbook A1989 ( 4 port with touchbar ) is on the workbench after the owner found that it wouldn't turn on or accept charge after sitting for a couple of weeks. Their Apple store advised them that the logic board had failed and a replacement unit was required; adding insult to injury all data would be lost. This is a common scenario for owners of Macbooks; with the data storage now soldered on the board and locked & encrypted by the T2 security system, the only way to recover data is to restore functionality to the logic board. This is what is done here.