What should be done if no fault is found after voltage or current measurements?

When no fault is found after taking voltage or current measurements, tracing the signal with a logic probe is an effective approach to continue diagnostics. A logic probe is a specialized tool that allows you to probe various points in a circuit to determine the logical state (high or low) of digital signals. By using a logic probe, you can identify whether signals are propagating through the circuit as expected, which can provide insight into the functioning or malfunctioning parts of the system.

This method is beneficial because it allows for a deeper examination of the circuit's operation beyond basic voltage or current measurements. It helps in diagnosing issues related to digital circuits and may reveal intermittent faults or components that are not actively showing problems under standard measurement conditions. Troubleshooting at this level can lead to identifying hidden issues that might not be detected through voltage or current measurements alone.

In contrast, switching to a different circuit may not provide any relevant information about the circuit being tested, redone measurements could yield the same results without deeper insight, and inspecting physical connections alone might miss problems related to signal behavior. Thus, using a logic probe offers a direct and effective method for diagnosing potential issues in signal integrity and logic operations within the circuit.