Newly installed LED bulbs will not turn off by using the switch. I have six lights in my kitchen ceiling controlled by a single pole on off switch, no dimmer. Replaced those incandescent bulbs with LED bulbs. The LED bulbs stay on regardless of the switch position. I pulled the wires from the switch and the LED bulbs still stay on. They are full on, not just Dimming. I removed one of the LED bulbs and put back in an incandescent bulb, reconnected the switch and it works fine. As long as I have that 40 W incandescent bulb in place everything works. It will not shut off when I use all LED bulbs. I actually have to turn off the breaker to get the lights off. They stay off until I flip the switch on again and then they will not turn off.

  • Can you upload a picture of the switch? Suspect something like: motion sensor, timer, illuminated switch, dimmer, etc. - something that is trying to "leak" through the circuit when off. Still odd, but if it is something other than a truly simple switch, that's the explanation. Oct 26, 2022 at 22:45
  • sounds like you have 3 way switch and the other one is supplying the power
    – Traveler
    Oct 26, 2022 at 23:35
  • @ 69578 I’m sure you are correct. Since the lights will not turn off even with the switch leg open, by removing the wires on the switch. I just can’t figure out where.
    – Dale
    Oct 27, 2022 at 15:39

1 Answer 1


Defective switch.

Or to be more precise, the switch isn't what you think it is.

Replace it with a switch that is what you think it is.

  • it is all about power of the mind
    – Traveler
    Oct 26, 2022 at 23:35
  • how can it be defective switch if it works with incandescent but not with LED
    – Traveler
    Oct 26, 2022 at 23:41
  • 2
    @ruskes because it's not a switch. It's some sort of actively-powered dingus that is doing stuff besides just being a switch. Oct 27, 2022 at 0:36
  • New discovery--actively-powered dingus- electricity Vudu :) I want one of those, provides power without consuming power
    – Traveler
    Oct 27, 2022 at 1:30
  • 1
    @Ruskes it's leaking current through the incandescent bulb. You've seen this before. Oct 27, 2022 at 1:48

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