Edit:
I have confirmed that my main question is answered in another post. But there are still things that bother me.
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Why is there a buzzing sound when the bulbs work?
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The new bulbs do not light up in another bathroom with the same kind of dimmer switch. Why is that?
I understand these questions are tough nuts to crack without certain details that might be hard to obtain. For example, it might be hard for me to dismantle the existing switches and look under the cover or to know the brand/model of the switch.
I just replaced my bathroom light fixture bulbs with newly bought bulbs (LED, A19, 40W equivalents). What I get is a head-scratcher: the bulbs light up dimly as soon as I screw them on and the switch is off. If I push the switch on, the bulbs function normally, but with a noticeable buzzing sound. Looks like this:
I am trying to figure out if there is something wrong with the new bulbs or the circuit. This is the box that the new bulbs came in.
My previous bulbs are of the same brand and the same kind (LED) but a higher wattage. My money is on that this has something to do with the switch. Most of my switches have a dimmer and a little LED that helps locate the switch in the dark. Does this mean I will have to go back to my old bulbs? Do I need to worry about the circuit?
Best Answer
The first problem is probably the dimmer, you need a smart dimmer (they usually require a neutral) some lighted switches use neon lights in the switch, even these draw enough to light many types of LED lamps. There are some dimmers that are LED compatible that do not require a neutral. You need to find an LED compatible switch and everything will work the way it should.