Determining whether a Lutron dimmer switch has failed involves checking both physical response and electrical continuity. Signs of a bad dimmer include failing to adjust light brightness smoothly, sticking or unresponsive paddle buttons, excessive heat emission from the faceplate, or complete failure to pass power through to the attached lighting fixture. Because Lutron devices feature robust solid-state circuitry, premature failure is rare unless the unit has experienced a severe power surge or continuous wattage overload exceeding its rated capacity. Verification: Test incoming and outgoing voltage across the dimmer leads with a digital multimeter to confirm whether the device is passing power correctly.
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