PCB Bring-Up & Debug — question 3 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
You power up a new board on a bench supply with the current limit set. The instant you enable the output, the supply immediately hits its current limit and the rail voltage collapses toward zero. Walk me through exactly how you would localize the short, step by step, using tools you'd have on a normal bench.