If the main 19V rail is stable, look at the Power Management IC (PMIC) responsible for generating the standby voltages ( +3VLP , +3V_ALWAYS , +5V_ALWAYS ).
Look for codes starting with DA0 or DA ending in MB (e.g., DA0U83MB6E0 , DA0R53MB6E0 ).
Look for 5-digit numbers followed by a suffix (e.g., 15256-1 , 13269-1 or project names like Mantis , Z5WAH ).
If you have a REV 2.0 board but can only find a REV 1.0 boardview, download it anyway. The power generation sequences and core IC layouts usually remain 90% identical between minor board revisions.
