Hp Probook 4540s Boardview ((top)) Official

return [comp for _, comp in sorted(nearby, key=lambda x: x[0])]

Search for PQ1 and PQ2 (typically dual back-to-back MOSFETs). Using the BoardView, find their source, gate, and drain pins. Check for 19V on drain of PQ1. If present but not on source of PQ2, the gate drive is missing. hp probook 4540s boardview