Testing a clothes dryer push-to-start switch to determine if it is broken involves using a digital multimeter set to continuity or ohms resistance. First, unplug the dryer from the wall outlet for absolute electrical safety and access the front control panel to remove the switch assembly. Second, disconnect the wire harnesses attached to the switch terminals. Third, set your multimeter to continuity and touch the meter probes to the switch terminals while pressing and holding the push button down. You can troubleshoot electrical components safely. You can verify that your start button is bad when pressing the button fails to close the circuit and produce a continuous beep or zero resistance reading on the multimeter, indicating a failed switch that requires immediate replacement.
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