Debugging Methodology — question 7 of 10
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You're probing a high-impedance analog node — say a 1 MΩ pull-up feeding a comparator input — and every time you touch it with a standard 10:1 scope probe, the voltage you read changes and the fault you were chasing seems to disappear. What's physically happening, and how would you confirm the probe itself is the cause rather than assume you accidentally fixed something?