A +5 V PCB power source that has been "pulled down" to a +3.4 V level may be due to:
Erratic or unexplained digital circuit activity is often due to _________.
Measurement of pulse width should be taken at a 50% mean of the:
The device that would best aid in open track detection is a(n) ________.
A check of all power supply voltages should be made during the ________ method of troubleshooting.
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