New LED bulb won't turn completely off...


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Old 10-04-22, 07:55 AM
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New LED bulb won't turn completely off...

I replaced the 3 bulbs in my dining room fixture with LED bulbs. The dimmer works fine, except that the bulbs never quite turn off; they have some slight glow with the switch all the way down.
It is a Leviton 6631, made years before LED bulbs existed, and marked for incandescent bulbs only. Now Leviton warns that it might not work properly with LED bulbs and a newer model is recommended.
Well, not turning off completely is not working properly, but I don't care about that. It dims nicely and the glow can serve as a night light.
I just want to make sure there is nothing dangerous about it.

I have recessed lighting in two rooms with the same dimmers on them, and they do turn off completely. They are 9w rather than the 6w in the dining room, and are a different manufacturer. FWIW
 
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Old 10-04-22, 08:55 AM
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Some older dimmers or electronic switches(especially remote controlled ones) with no neutral connection pass a small amount of current even when off. It is not enough to cause incandescent bulbs to glow but sometimes LEDs do. You will not cause any damage to either the dimmer or the bulbs by letting them glow. If you have multiple LED bulbs in a circuit, replacing one with an incandescent will stop the glow.
 
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Old 10-04-22, 10:36 AM
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Thank you. I don't care about the glow, just don't want the house burning down.
 
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Old 10-04-22, 06:00 PM
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If it turns out to be dimmer causing problem, I recommend replacing dimmer with LED compatible one. LED driver may burn out when used with incompatible dimmer and kill LED bulb.

Also, you might want to check if polarity is correct. If hot and neutral are reversed, or neutral is switched instead of hot, it will cause LED light to glow when turned off.
 
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Old 10-04-22, 06:03 PM
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Many older LED bulbs will glow with no power turned on.
They are sensitive enough to pick up the induced power in nearby wiring.
A little eerie but absolutely no problem.

Most new bulbs have an additional resistor in them to force them off with no power.
 
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Old 10-05-22, 12:13 AM
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If you are satisfied with the function else it should be left as it is. That tells us that we always has used an extremely small amount of power when we had the light turned off. (I have tried the same but my LED lamp was flickering even at full output)
At reduced output (As night light) the use will not make any measurable difference in how long the LED's will last.
Slightly reduced voltage makes led last extremely much longer.
 
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Old 10-07-22, 09:25 AM
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Most new bulbs have an additional resistor in them to force them off with no power.
I didn't know that, that's interesting. To the OP's problem, no one has mentioned this yet, but it's also possible the neutral is being switched rather than the hot wire.
 
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Old 10-07-22, 10:56 AM
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@ joe. You need to check out Big Clive on you tube.
 
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Old 10-08-22, 07:33 AM
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Originally Posted by CasualJoe
but it's also possible the neutral is being switched rather than the hot wire.
Not an uncommon problem
​​​​​​​
The cheap Chinese bulb that won't turn off - YouTube
https://www.youtube.com/watch?v=1uEmX5XClPY
 
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Old 10-09-22, 05:35 PM
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Not an uncommon problem
In years past I found switching the neutral fairly common in very old homes with knob & tube wiring. I've seen it a few times in newer homes, but not often.
 
 

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