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Thread Number: 73186
/ Tag: Other Home Products or Autos
Tore Apart A Failed LED Bulb |
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| Post# 966730 , Reply# 1 11/7/2017 at 23:52 (2,354 days old) by speedqueen (Metro-Detroit) | ||
Those who say LEDs are very reliable think of the diodes themselves but never of all the circuitry to run them, bridge rectifier, capacitors, transformer etc. LEDs can last 20000 hours but not LED retrofit bulbs with their compact power supply that allows for almost no heat dissipation. There are, however, true 20000 hour incandescent bulbs.
Some manufacturers have eliminated the electrolytic all together and let the bulbs flicker at 60hz. | ||
Post# 966793 , Reply# 3 11/8/2017 at 09:30 (2,354 days old) by foraloysius  (Leeuwarden, Friesland, the Netherlands) |
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Post# 966805 , Reply# 4 11/8/2017 at 10:57 (2,353 days old) by d-jones (Western Pennsylvania (Pittsburgh Area)) |
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I've been reluctant to switch to LED bulbs or compact fluorescents for years simply because I found them hideous to look at. All of them looked as though they'd been severely beaten with an ugly stick. But now that LED Filament bulbs are available I've been gradually swapping them in all over my house. To the casual observer they look just like ordinary light bulbs, they come in a wide variety of styles, and the color of light they produce is warm like an ordinary incandescent.
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Post# 966817 , Reply# 6 11/8/2017 at 11:34 (2,353 days old) by GusHerb (Chicago/NWI) |
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David I saw these frosted Philips bulbs at Homo Depot the other day. So far my favorite filament style LED, they're silent and completely indiscernible from incandescent unless you read the markings.
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| Post# 966823 , Reply# 7 11/8/2017 at 12:12 (2,353 days old) by firedome (Binghamton NY & Lake Champlain VT) | ||
not sure if its true....
but Efficiency Vermont claims that Energy Star LED lamps are far superior in life-expectancy as compared to non ES bulbs. The past year we've been able to buy Sylvania Energy Star rated bulbs for 95 cents each, under their subsidy program we've put them in all sockets in both houses and stocked up well for the future:
www.efficiencyvermont.com... | ||
| Post# 967045 , Reply# 9 11/9/2017 at 15:32 (2,352 days old) by ken (NYS) | ||
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Post# 967080 , Reply# 11 11/9/2017 at 20:27 (2,352 days old) by sudsmaster (SF Bay Area, California) |
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With LED bulbs, be careful putting them into small enclosures. They may overheat in there and that will shorten their life.
I started out with CREE brand LED bulbs because their relatively high CRI, but was not real thrilled with their look, efficiency, or longevity. I have since switched mostly to Feit brand bulbs from Costco. Their Tru-Color bulbs have pretty good CRI (92+) and seem to last quite awhile, even in enclosed glass fixtures. My only complaint might be the FM radio interference, but I think most LED bulbs do that. The Feit bulbs are quite energy efficient, a number that seems to get better every year, with their wattage approaching just 10% of equivalent incandescent bulbs. The older ones had heavy aluminum fins near the base. The newer ones apparently are able to dispense with that heat dispersing method, and have a smooth base. I haven't had on fail yet, but when it does I may try to saw it apart to check out the electronics. My only problem now is what to do with the pile of CFL's, many NIB, that I have accumulated before switching over to LED's. The new filament LED's are nice. I have a few of them at the 2300 K very warm color level installed as mood lighting around the place. 40 watt equiv at 4.5 watt consumption. | ||
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Post# 967116 , Reply# 13 11/10/2017 at 01:35 (2,352 days old) by kb0nes (Burnsville, MN) |
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For about 10 years now I have had a basically 100% LED lit home, no incandescent or compact florescents. At the point that the 60w replacement lamps hit ~$20/ea I changed over. The only incandescent lamp in the home is in the self cleaning oven (for obvious reasons).
I have yet to have a single lamp fail in my home. Probably about 30 or so lamps total, mostly Cree or Phillips, I tried to avoid buying any off brands. I did have one first generation Cree 60w eq A19 lamp fail at work, it started to flicker but never died. One friend of mine has slightly more checkered luck with with lamps he has had in recessed ceiling cans, I think he had about 3 or 4 fail in a couple years. Even if I had more failures I'd still be perfectly happy. The lamps are basically paying for themselves in energy cost savings in about a year. I sure haven't minded not having to replace a lamp in years too. Now if I could stop having to replace the smoke detector batteries every 2 years or so lol | ||
| Post# 967131 , Reply# 14 11/10/2017 at 07:59 (2,352 days old) by vacerator (Macomb, Michigan) | ||
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With some types, the driver is replaceable at a minimal cost of about $10 to $15, as opposed to a new fixture entirely. They plug in like a typical pcb board connection. | ||
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Post# 967169 , Reply# 15 11/10/2017 at 13:47 (2,351 days old) by sudsmaster (SF Bay Area, California) |
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A few years ago I worked for a company that made manufacturing equipment for CREE. Stuff like vacuum chambers. Didn't give me any insight into how Cree does stuff, though.
The FEITS have been pretty good here. Esp the newer finless "Tru Color" designs. I remember getting some LED night lights a while back. They were not very effiicient in terms of watts per lumen. Probably because they had very simple circuits - mainly a bridge rectifier with four or five resisters and probably a diode or two. No transistors like in more efficient power circuits. They didn't give out much light and most of them have been retired to the refuse bin. What I'd really like to have is a mogul base 100-200-300 watt equiv. LED bulb. So far, nothing out there like that. | ||
| Post# 967177 , Reply# 16 11/10/2017 at 14:35 (2,351 days old) by ken (NYS) | ||
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Post# 967771 , Reply# 21 11/13/2017 at 17:58 (2,348 days old) by CircleW (NE Cincinnati OH area) |
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Jonathan, it may be that your dimmer is not intended for LED, and therefore will not dim them properly. I'd suggest you replace it with a universal type dimmer switch. | ||
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Post# 967780 , Reply# 22 11/13/2017 at 18:36 (2,348 days old) by DADoES (TX, U.S. of A.) |
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