La-e791p Rev 2.0 Schematic Diagram -

⚠️ Many paid sites selling this are scams. The schematic is available freely in repair communities.

If you are troubleshooting a "No Power" or "No Display" issue, these community-vetted resources can provide the specific Rev 2.0 files or guidance: La-e791p Rev 2.0 Schematic Diagram

| Page | Block | Signals to probe | |------|-------|------------------| | 3 | System block diagram | Traces power flow: DC → ALW → S5 → S0 | | 8 | SIO (ITE8987) | LID_SW#, AC_IN, PWRBTN#, RSMRST# | | 12 | SPI ROM (BIOS) | CS#, DO, DI, CLK (measure with scope on power-up) | | 18 | USB & Audio | USB_OC# (overcurrent faults cause no boot) | | 22 | PCIe & WLAN | WLAN_DISABLE# (high = enable) | | 26 | EC embedded controller | KBC_PWRBTN#, EC_RSMRST# | ⚠️ Many paid sites selling this are scams

Download the actual La-e791p Rev 2.0 schematic and boardview from a repair forum. Use the above as your field guide to navigate it. If you need help reading a specific part of the schematic once you have it, describe the component or signal name, and I will interpret it for you. Use the above as your field guide to navigate it

Without the schematic, you would have assumed the 3V chip was bad and wasted an hour replacing it.

The EC’s +3.3V_RTC backup circuit now includes a larger supercapacitor (0.22F vs 0.1F in Rev 1.0), allowing RTC retention for up to 72 hours instead of 24.