How do you fix a noisy light bulb?
Remove a bulb or two from a multi-light fixture: If the buzzing stops, this means the dimmer probably can’t handle the wattage of running the lights all at once. To work around this, replace the bulbs with lower-wattage CFLs or LEDs.
Why is my light bulb buzzing and flickering?
Dimmer switches work by rapidly switching the electricity circuit to the bulb on and off which reduces the overall amount of energy flowing through the circuit and to the bulb. This is why the voltage sometimes has gaps in it which causes buzzing (and flickering).
How do I stop my LED lights from buzzing?
CL dimmers will eliminate the buzzing on most brands of LEDs, but not all. Electronic Low Voltage (aka reverse phase or trailing edge) dimmers are designed for electronic (capacitive) loads like LEDs. In my experience, ELV dimmers help or eliminate the buzz almost every time.