Lae801p Rev 20 Schematic Better ((new)) 🔥

: For boards with failed dedicated GPUs, some technicians use the schematic to perform a "Non-Graphic" conversion, disabling the dGPU to run on integrated graphics alone. Quick Diagnostics Table Potential Culprit Measurement Point No Power / No Lights Charging IC / First MOSFET Pin 8 of PQB12 (Expect 19V) Pulsing Power Shorted PQA1 Chip Coil PLA1 (Check for low resistance) No 3.3V/5V Rails PWM Controller / Shorts Check coils for 3.3V and 5V No Display BIOS / RTC Section Check RTC battery and CMOS circuit Do you have a multimeter thermal camera on hand to check for specific hot spots on the PQA1 chip?

| Test Condition | Pre-Rev 20 | Rev 20 | Improvement | |----------------|------------|--------|--------------| | Output ripple @ 500mA load | 42mV p-p | 12mV p-p | | | Load transient overshoot (0 to 1A) | 180mV | 64mV | 64% reduction | | Thermal rise @ ambient 25°C | +34°C | +22°C | 35% cooler | | Audio band noise (20Hz-20kHz) | 112µVrms | 38µVrms | 66% lower noise | lae801p rev 20 schematic better

file (.cad or .brd) used alongside the PDF schematic makes locating physical components on the board significantly faster. Search for Aliases: : For boards with failed dedicated GPUs, some

Ensure your schematic matches "Rev 2.0" exactly, as Rev 1.0 may have different component labels (e.g., PQA1 vs PQB12). Use Boardview Files: If available, a Search for Aliases: Ensure your schematic matches "Rev 2

are invaluable for cross-referencing schematic data with real-world repair logs. Tips for a "Better" Schematic Experience Check the Revision:

You should typically see 3.3V at the power switch connector. Resources for Repair