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Older house(1973). Hanging ceiling light fixture in den has dimmer switch and light would flicker periodically. During renovations I installed new LED dimmer switch and put in new dimmable LED bulb. Flickering seems to have stopped except when dimmer slider on switch is raised to max position the bulb dims and flickers. Everything is fine up to about 75% power on switch. Thanks for the help.

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  • I am in NZ. My experience has been that the dimmer flashes when on solar power which is at 240V. Whereas supply is at 220V. It was also causing premature failure. So I ended up replacing the dimmer with a switch and everything works fine. I had to do that on all 8 such circuits. So try testing with a switch without a dimmer. Commented Apr 29, 2023 at 20:12
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    Dimming on LEDs is a black art. The LEDs are hit and miss and so are the dimmers. Old legacy "non-LED-rated" dimmers even more so. Commented Apr 29, 2023 at 22:21

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I've had this exact problem. I wound up using a different brand of dimmer switch. First I would try a different brand of light bulb. When it comes to LED components quality matters.

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Insure that your dimmer switch is LED compatible, older dimmers are not, also make sure that the LED bulb you are using is dimmable, it should say this in the box.

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I had three LED bulbs flickering and going out on a non-dimmed lighting switch. The clever electrician thought to himself… 1.) it can’t be the 10,000 hour LED bulbs that are maybe 2 -3 years old… 2.) It must be a loose connection at the light switch or connector nuts…checked … nope…. 3.) Ok it must be a loose connection out in one of the junction boxes near the three lights…checked…nope…. 4.) it must be a loose connection in the light fixture…checked…nope… 5.) it must be a bad solder joint at the bulb socket…checked…nope… 6.) it must be failing led drivers in the bulbs…checked … found the problem with each bulb!!! Solution: Replaced the bulbs with cfl daylight bulbs✅😊🎷

Moral of this story: try the easy things first … change the bulbs‼️✅🎷 before opening up the wiring j boxes, switch box and light fixtures‼️‼️😕😕

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  • Hi Roy, I don't see how this answers the question. Commented Sep 21 at 7:05
  • Hi, I was trying to say that LED bulb internal drivers can fail early. Just change the bulb and try again. If it’s not the bulb try removing the dimmer switch with standard switch. If bulb lights up solid, then replace the dimmer switch. If the bulb is still flickering with a standard switch, there is wiring issues in the old house…
    – Roy Hill
    Commented Sep 21 at 17:18

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