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Questions tagged [led]

For questions regarding lighting that uses LED (Light Emitting Diode) technology.

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2answers
2k views

LED lights “popcorning” (flashing on and off randomly)

My church installed some recessed LEDs connected to a Chauvet DMX-4 dimmer pack. The pack is connected to an Elation stage setter dimmer console so we can control from our sound booth. When turned off,...
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2answers
89 views

Phillips (non-dimmable) 60W LED bulbs breaking in the light fixture

I replaced all of my light bulbs (CFL's) with Phillips 60W LEDs when they were on sale with coupons last October 2017. They claim they will last 13+ years if used 4hours / day for 7 days a week. 6 ...
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2answers
71 views

How do I choose which LED bulbs to put in my home?

General purpose LED bulbs seem to vary a LOT in price... from $1 per bulb to $40+ per bulb... and there doesn’t seem to be any tangible difference between them. I mean, some say they last longer, but ...
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46 views

Will these low watt LEDs work with a 12V transformer?

I've inherited a pretty poor quality garden light kit that runs off a 12V/2500mA AC transformer. It supports x6 lanterns which each have a measly 5W halogen bulb. Barely illuminating anything. If I ...
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2answers
3k views

G9 LED Won't Fit In Socket

I am a little embarrassed that this question might be ridiculous, but I feel like I'm losing my mind. I purchased this wall sconce and added in a toggle switch because there's no wall switch on the ...
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1answer
399 views

GU10 LED lights strongly strobing (no dimmer) UK

I realise there is a lot of information out there on LED lights flickering, however I'm struggling to find anything relating to this situation, i.e. GU10 fittings and a regular switch (i.e. not a ...
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0answers
27 views

Smart Lights - colour dilemma

I am trying to select a smart light for my room. But there is a confusion here. I want pure white light. The bulbs that I am showing in the screenshot show in their descriptions that they emit all ...
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0answers
73 views

PMMA vs PVC for opal led strip enclosures?

I am planning to install some aluminium profiles for led strips with matte cover diffusers ( opal / frosty). I found that the covers are made from two different types and I would like to know the ...
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1answer
38 views

Why, in the same light bulb, three of the six leds flick, and the other do not?

As the title of the post says: What could be the reason to have three of the six leds of the same light bulb, blinking? while the other three don´t ? Thanks so much for your help. Tyrus.
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1answer
51 views

Hue (led) bulb does't turn on when put in certain lamps?

Just acquired my first set of Hue lights (E27 type) and to my disappointment when I put them in my bedroom ceiling lamp they do not turn on. However If I try by putting them in a ceiling lamp in the ...
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0answers
34 views

Replacing a cfl tube light with a led wiring help

So I was given the task of replacing old cfl tube lights in my room for brighter led (120 cm long) ones. Never done this before so I'd appreciate a walkthrough. I already took down the old tube light ...
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1answer
784 views

Can I “daisy-chain” LED strip lights to my bathroom exhaust fan and have them work on the same light switch?

I just finished installing a new exhaust fan in my bathroom. I have access to the ceiling before I patch up the old hole where the old fan used to be. A lot of people tend to connect a recessed light ...
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2answers
2k views

LED Light Glowing when off

I have been searching the internet and StackExchange for a couple of weeks now and have not found anything that fixed the issue. I recently added a room in my basement, all new wireing, lights, ...
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1answer
59 views

JA8 certified light source

We live in San Francisco, CA. We're attempting to replace overhead lighting in our kitchen area of our condo. I'm trying to understand this piece of the lighting code: According to http://...
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1answer
477 views

Troubleshooting a String of LED Recessed Lighting Fixtures

I have 5 LED-based recessed lights on a 3-way switch that are problematic. When I activate the circuit, I rarely get all 5 lights switching on. If I turn them off and back on again, they all work. ...
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4answers
5k views

LED lamp keeps glowing when dimmer is turned off

(I know this question has been asked before (here), but I followed the advice recommended by the users in that thread to help remedy the problem, but the lights still glow.) I recently bought ...
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1answer
1k views

LED bulb always flickers or doesn't turn on

My bathroom is fitted with six traditional 20W GU5.3 / MR16 bulbs, and I want to replace them with the smart home equivalent. The only one I could find with the same socket type is the 5W Osram Smart+ ...
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1answer
70 views

LED MR16 replacement bulbs: How to evaluate brightness and color temp? [closed]

The main area of my house uses MR16 exclusively, mostly 50W bulbs. I have tried a few LED replacements over the years (none for the past 2 years), and have not been happy with brightness (not bright ...
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1answer
59 views

Can a 100' string of led lights be powered from each end hooked to one power supply [closed]

can both ends of a 100' strip of leds be hooked to the same power supply with out damaging the power supply of leds
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3answers
572 views

Wiring toggle switch (on/off/on) to PIR motion sensor and led strip

I would like to set this up so the first on position goes through the motion sensor and the second on position would be for just turning the led strip light on and bypass the motion sensor. When I set ...
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3answers
114 views

Can I have dimmable LEDs in a corded lamp?

For a couple of bedside/reading lamps I want to use LEDs, but even the dimmest bulbs I've seen in the shops are about 250lm and still too bright for the purpose. So I've come to consider a dimmer. ...
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1answer
149 views

LED ceiling fixture certain diodes blinking

My ceiling fixture has all of a sudden stopped working properly. Half the diodes are dark and the others are blinking. Oddly, the same exact ones on each strip work and don't work. I have included a ...
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2answers
167 views

Is this 110V switch “safe”?

This would presumably be installed in a door jam to turn a light on/off when the door is open/closed. It works on 110V with a maximum current of 2A. All of that is fine for my application (125mA LED ...
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3answers
346 views

How to bypass ballast for T8 4ft LED tube?

I successfully bypassed a ballast to install a T8 4ft LED tube. But this time, I have a different kind of ballast (HOWARD INDUSTRIES M2/40RS-120, 60 HZ MAGNETIC BALLAST), one that can connect to 2 ...
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4answers
6k views

Is a ballast required, or merely acceptable, for this Philips InstantFit LED tube?

Rather than replace a dead ballast in a fluorescent fixture, I've decided to simply bypass and move to LEDs. However, I think I may have grabbed the wrong kind of replacement tubes the other day in ...
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4answers
3k views

Why do my LED shop lights flicker when my compressor turns on?

I converted my shop to led from fluorescent.These are direct wire no ballast. Ran all new wires in conduit. The compressor is a 5hp single phase on a 60 amp breaker with 125amp main. I replaced ...
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3answers
357 views

Air compressor makes LEDs flicker

About 2 years ago I converted an automotive shop from florescent to LED T8(120 volt). They worked great until we changed the compressor today to a new more efficient and more powerful one (both 240 ...
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3answers
183 views

Individually addressable LED Strip lights

OK - in theory I have a BSEE degree from 1974 but in reality it was a Computer Science degree so I need help to make sure I wire (mostly in wall) this correctly and do not burn down my new house. And ...
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1answer
147 views

Weird LED light bulb issue

I'm looking for a good answer for an issue I'm having with some new LED light bulbs I got today. When I plug both 17w (150w equivelent) bulbs into the sockets in my garage they don't turn on at all. ...
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1answer
240 views

Do I need to dismantle the ballast on a metal halide bulb fixture before replacing with an LED bulb?

Is it necessary to dismantle the ballast on a metal halide fixture before popping in a corncob type LED bulb? Halide is 120w, LED will be @45w.
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3answers
1k views

How to connect LED tape strips in separate locations to one power source?

We're looking into running LED Tape Lights under the wall cabinets in our kitchen. We have three sections that would get the lights and we need them all powered by a single switch. There is a switch ...
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2answers
2k views

How can I reduce RF interference from LED light tubes?

? I picked up a dozen 3 bulb fixtures at the local habitat and installed them in my shop . Since the fixtures had no tubes I installed Sylvania Substitube LEDs . The lights work great , instant on and ...
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1answer
2k views

LEDs in a multi-bulb fixture only dim when installed alongside a single 60W incandescent bulb

I have a 'Sputnik'-style ceiling light fixture that accepts about 12 bulbs. I installed 12 LED bulbs into the fixture. However, the fixture was just too bright with 12 LEDs, so I installed a dimmer ...
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1answer
90 views

Light bulb suddenly only turns on for a moment, tried multiple bulbs

So when it happened, I tried to turn on the light (that worked fine before) and it lit up only to go off shortly after. subsequent tries were met with failure. So I changed the bulb for a new one. No ...
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0answers
68 views

powerline adpater (ethernet) and recessed LED lights in the same room (same circuit)

I used to have computer, laser printer and a powerline adapter off the same outlet in the same room with no issues. I added recessed lights in the room, and now this trips the circuit breaker. The ...
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0answers
277 views

LED lights with programmable wall switch

I've recently replaced a standard 3-pole switch with the Honeywell RPLS540A programmable switch. The product says that it is not compatible with CFL or LED lighting. I foolishly did not read the fine ...
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1answer
4k views

Blinking/flashing LED porch light

I have a pair of LED porch lights. One of them has started to flash/flicker. Do I need to replace it? It is not a bulb; it is built in. It is extremely cold out. Could that be a factor?
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0answers
194 views

Electrical - LED E14 size light bulbs not working in European Chandelier

We have a European chandelier that takes 6 E14 size bulbs. We currently use incandescent bulbs without issue, but we would like to switch to LEDs. We bought some LED bulbs, but they don't work - ...
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1answer
3k views

MR16 LED turns off after 10 minutes - regular halogen works fine

UPDATE: I checked reviews on the LOWES website - the Utilitech bulbs do this for everyone - they are just a crappy product. *** I have replaced several MR16 halogen bulbs in my kitchen with Utilitech ...
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0answers
1k views

LED ceiling fixture is super dim - why?

I'm stumped. I bought a Lutron Maestro MS-OPS2 occupancy switch and an LED light fixture for a closet when the old fixture's bulb burned out. Everything worked well for a couple of days, and then the ...
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1answer
4k views

Why does half of the christmas led lights dim down?

I have a strip of 3VDC (two AA in seires) christmas LED lights. 10pcs in one strip. I've been using a 18650 (4VDC), to make them shine brighter; after one week first half of them dims down from bright ...
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0answers
92 views

(UK) LED lights flash once after being switched off

I had a nice kitchen light fitting with 5x 20watt halogen bulbs (G4), and the transformer blew. I thought that now would be a great time to upgrade the transformer/fitting to support LED lighting. I ...
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3answers
88 views

LED bulbs in lamp sockets?

I have a table lamp that had standard 75 watt bulb (I believe in a 3 way socket) which suddenly lowered to about a 40 W, or less without my touching the switch. I replaced it with a new 8.5 W 60 W = ...
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2answers
2k views

Can I use another brand of LED driver with IKEA lighting?

I'm planning on getting IKEA OMLOPP lighting. However, since I would need multiple Ansluta transformers and they are quite expensive, I was wondering if its possible to use a regular LED driver ...
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1answer
83 views

Is a 150 watt LED suitable for a pendant fixture?

I want to replace a 150 watt incandescent bulb with a 150-200 watt LED bulb in my kitchen fixture which is a hanging 12-inch diameter fully enclosed glass ball. The guideline for the LED say it is not ...
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2answers
440 views

GE dimmer works with 3 LED lights, somewhat with 4 and not at all with 5

I've got a brand new single pole GE 14294 Z-Wave Plus dimmer. Before I try to connect it to z-wave, I wanted to make sure it was working. I have five LED lights (4W, 65mA, BR20 flood) lights in ...
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1answer
33 views

LED lamps and fluoro replacements

I have recently purchased LED lamps and magnet attached circular units to replace old fluoresent tube units. The individual lamps in the format of a standard 240v lightbulb are no ...
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1answer
127 views

Can replacing LED light bulbs cause electric faults somewhere else in the house?

Yesterday I replaced a few old halogen bulbs in the kitchen and the hallway with LED bulbs - B22 and MR16. I was reading that the MR16s could be tricky has they might need an LED driver, I ordered ...
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1answer
205 views

Switching bulbs? PAR20 halogen to PAR20 LED, is this a problem?

I have recessed lights that were sold as 'PAR20 halogen' use. I see that there are PAR20 LED lights around, which would save some energy and last much longer than a halogen, and I was wondering if ...
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2answers
512 views

Replacing an LED Driver

I've got a failed LED driver that I need to replace. It's a 25W constant-current model (260mA, 28-87V), and finding an exact replacement for this part appears to be nearly impossible. What are the ...