When troubleshooting a printed circuit...

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Question 1 of 2066636eed28f7522a1c51dca4

When troubleshooting a printed circuit board, one technique that can be used is component substitution. Upon what basis would a suspected defective component be substituted with a known good component?

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Question 1 of 20

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🔍 Key Concepts

• Purpose of component substitution in troubleshooting printed circuit boards • Difference between informed, test-based substitution and trial-and-error swapping of parts • Role of inspection and test measurements before replacing any component

💭 Think About

• Before you replace any part, what information should you have about that component’s condition or the signals around it? • Which options describe a controlled, diagnostic approach rather than guesswork or purely mechanical swapping? • How would a skilled technician decide which component to substitute first on a complex board?

✅ Before You Answer

• Identify which choices rely on evidence from tests or observations rather than randomness or just moving in a straight line across the board. • Eliminate any option that conflicts with standard systematic troubleshooting practices (is it random? is it wasteful or risky?). • Ask: does the method described help you narrow down the actual faulty stage or component before substituting, or does it just tell you to swap parts without any prior diagnosis?

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