If the laptop powers on but has no display, ensure the fan is spinning; a failure here can cause an immediate thermal shutdown.
A traditional PDF schematic tells you how components are electrically connected. A boardview file tells you physically where they are. brittle mb 152561 boardview
Many boards in the 152561 series (often tied to the Haswell and Broadwell generation of Intel chips) are notorious for what repair techs call "brittle" architecture. This refers to two specific vulnerabilities: If the laptop powers on but has no