Test Point !full! | Stk-lx1
A test point is a specific exposed copper pad or via on the smartphone’s main circuit board (PCB). It is not a button or a connector; rather, it is a diagnostic interface used during manufacturing and advanced repair.
Carefully remove the back cover. You may need to remove the internal metal shield to expose the motherboard. Power Off: stk-lx1 test point
However, for a true "dead boot" condition (no fastboot, no recovery, no power), – you must use the physical test point. A test point is a specific exposed copper