Identifying a failing or dead ceiling fan motor capacitor involves observing specific operational symptoms during startup and speed adjustments. Key warning signs include a ceiling fan that hums or buzzes loudly when turned on but the blades refuse to spin on their own, blades that spin very slowly even on the highest speed setting, or a fan that requires you to manually push the blades by hand to get them started. You can troubleshoot capacitor wear safely by isolating power at the circuit breaker before opening the switch housing. You can verify that your corrective action is successful when shutting off power, discharging the old capacitor, and replacing it with a new unit matching the exact microfarad (uF) rating restores smooth, automatic blade rotation.
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