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Electrical Help needed - LED pot light bulbs

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  • Feb 16th, 2017 8:15 am
[OP]
Newbie
Apr 18, 2007
14 posts
Toronto, ON

Electrical Help needed - LED pot light bulbs

Hello,
Hoping an electrician on the board can help me out.

I have pot lights in my kitchen that I recently switched the bulbs (only) over to LED. There are 3 pot lights on the single switch. When I had regular bulbs, two of them tended to burnout well before their expected due date. Now that I've switched over to LED lights, they don't burn out, but they turn-off in (same 2 of 3) in a matter of minutes (less than 2).

I'm trying to figure out what I need to do to fix this. Is it the wiring, or do I just need to replace the pot lights? Any help would be appreciated.

Best,
9 replies
Member
Aug 25, 2006
210 posts
170 upvotes
Toronto
wonder if your potlight fixtures are low voltage instead of line voltage and your are trying to put a 120 volt bulb into a 12 volt fixture. 12 volt fixtures are pretty common especially for potlight type fixtures. Do the fixtures or old bulbs have an markings on them indicating the voltage requirement? With a regular tungsten or halogen I'd imagine putting a 120 volt bulb in a 12 volt fixture will just result in a very dim light but with led's maybe that is the resulting behaviour (shut off prematurely).
Deal Addict
User avatar
Dec 12, 2006
4340 posts
559 upvotes
Messed Up Area
Problem with LED bulbs, is if there is any residual power in line they will still run.

At 6 watts, could indicate the switch is not actually cutting power off ( older switches sometimes are not compatible with LED bulbs ), and just reducing the power. On a 60 watt older bulb there isn't enough power left in line to power and thus turn off immeditly.

Now if older bulbs where dying in same sockets, could be connections and/or ballasts.

Are you hearing any ballast humm?

I would 1st turn off main power to lights and then look at and resecure all maretts. Then check wires at switch and retighten.
[OP]
Newbie
Apr 18, 2007
14 posts
Toronto, ON
theguyz wrote: Problem with LED bulbs, is if there is any residual power in line they will still run.

At 6 watts, could indicate the switch is not actually cutting power off ( older switches sometimes are not compatible with LED bulbs ), and just reducing the power. On a 60 watt older bulb there isn't enough power left in line to power and thus turn off immeditly.

Now if older bulbs where dying in same sockets, could be connections and/or ballasts.

Are you hearing any ballast humm?

I would 1st turn off main power to lights and then look at and resecure all maretts. Then check wires at switch and retighten.
Thanks for the reply. I don't hear any humming. Is it possible to just replace the switches that will accommodate for LED bulbs? Is that possible?
Sr. Member
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Mar 3, 2013
516 posts
263 upvotes
East Gwillimbury
--DS1-- wrote: Thanks for the reply. I don't hear any humming. Is it possible to just replace the switches that will accommodate for LED bulbs? Is that possible?
Are your bulbs MR16, GU10 or screw base? Likely bad transformers if MR16
A Licensed Electrical Contractor
[OP]
Newbie
Apr 18, 2007
14 posts
Toronto, ON
MrSparky wrote: Are your bulbs MR16, GU10 or screw base? Likely bad transformers if MR16
I believe they are m16, the narrow thin double pin. Are the transformers in the pot light unit I'm assuming, or the switch? I'm guessing the pot light...so I should replace the entire pot light?

Thanks for the help on this.
Sr. Member
User avatar
Mar 3, 2013
516 posts
263 upvotes
East Gwillimbury
--DS1-- wrote: I believe they are m16, the narrow thin double pin. Are the transformers in the pot light unit I'm assuming, or the switch? I'm guessing the pot light...so I should replace the entire pot light?

Thanks for the help on this.
The transformer is mounted to the pot light and not exactly easy to replace or find a replacement. I would look into replacing the pot light. Some will suggest bypassing the transformer and replacing the socket with a line voltage type, not something I would do personally.
A Licensed Electrical Contractor
Member
Jul 14, 2012
323 posts
136 upvotes
Hamilton
Sounds like they are over heating. Most likely the can isn't rated for insulation contact in an insulated ceiling.
"...I started playing porn REALLY loud with speakers facing my back yard. The kids stopped going out back after the parents heard that." - TheGreatGazoo
Sr. Member
Sep 12, 2012
766 posts
541 upvotes
Toronto
I have the same issue with a track light in my basement. My track light holds three GU10 bulbs and I was using three 50w halogen bulbs. I switched them out for three 6w LED bulbs and now when I have all three LED bulbs in the light fixture, one of the bulbs will constantly dimmly stay on with the switch off. After some research, there is supposedly a little bit of energy still powering the light fixture which is keeping the one 6w bulb dimmly lit. I just switched out one of the LED bulbs for one of the original 50w bulbs and it solved the problem because that little bit of live power isn't enough to power the 50w bulb. Now how to permanently fix the problem? I'm not sure.

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