2.0 Schematic: La-e791p Rev

: You can find the full Rev 2.0 diagrams on professional repositories like or via repair communities on Are you currently troubleshooting a specific fault

: Usually the last rail to appear; if this is missing but others are present, you likely have an SOC (System on Chip) or CPU power management issue. Troubleshooting Tips No Display? A common failure point on this revision is the or a lack of Not Charging? Focus on the la-e791p rev 2.0 schematic

, such as a dead board or no display, so I can provide more targeted test points? : You can find the full Rev 2

Before diving into complex logic, verify these basic rails in order. If any of these are missing, the laptop will not reach the S0 (fully on) state: : Essential for the Embedded Controller (EC) to start. +3VALW / +5VALW Focus on the , such as a dead

LA-E791P Rev 2.0 motherboard (commonly used in HP 15-bs series laptops), a highly useful piece of information for troubleshooting power issues is the SMBUS Address Table Primary Power Rail sequence Critical SMBUS & Power Address Table

: "Always-on" rails that must be present even when the laptop is off but plugged in.