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LED lamps and exaggerated long life expectancy ?

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Forum topic by distrbd posted 02-20-2014 09:43 PM 761 views 0 times favorited 20 replies Add to Favorites Watch
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distrbd

1261 posts in 1169 days


02-20-2014 09:43 PM

I recently bought two LED light bulbs for my range hood to replace the Halogen lamps (GU10 base)thinking I would rather spend $40 on these(Philips) led lamps now and save energy but more importantly never have to replace them for another 20 years or so.

Two months later ,one of the two bulbs started to flicker,and other one just died all of a sudden,now I’m thinking what happened to 20 plus years I was hoping to get for my investment?,could it be because they were installed in a range hood which exposes them to high heat and maybe fried the electronics inside?or maybe the loge life expectancy for led lights is just an exaggerated claim and may very well be true a few years down the road but not now,after all the technology is relatively new isn’t it?

Anyhow,I am extremely disappointed in these expensive led bulbs ,it reminded me of the early CFL lamps when they were first introduced they kept burning prematurely but since they have mastered that technology they are truly reliable now a days..Maybe I’ll wait another 3-4 years and hopefully by then you will be able to believe the 50.000 hour life expectancy for led lamps.

-- Ken from Ontario


20 replies so far

View mrjinx007's profile

mrjinx007

1796 posts in 490 days


#1 posted 02-20-2014 09:58 PM

Hi,
I have had the same experience. One thing I have learned with a new technology is that I will wait 4-5 years until they work out the kinks before purchasing. Just like Obama care, the first people who tried to sign up, got screwed.

-- earthartandfoods.com

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DrDirt

2542 posts in 2465 days


#2 posted 02-20-2014 10:15 PM

It is likely a bit of both – the electronics don’t like heat – - neither do the LED’s themselves.
This is where LED’s excell in freezer cases, parking lots etc…. not so great at high temps.

Also the diode chips themselves may be fine – but ALL the actual LED lamps are run from chinese electronics and final assembly – whether Philips, GE, Cree, or others. Philips and Cree make chips in the USA – but LAMPS, come from China.

if you have the receipt from home depot – I would take it back and see if they will refund/replace – or if they will make you go through the manufacturer.

You are describing a COMMON problem with LED’s – there is a lot of ‘Marketing… that resemble a Billy Mays commercial
They are getting cheaper – - but are NOT getting better from a reliability standpoint…It is akin to asking for Mercedes to strip down their cost to that of a Chevy Cruze – and see if quality is still the same.

-- "If we did all the things we are capable of doing, we would literally astonish ourselves." Edison

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distrbd

1261 posts in 1169 days


#3 posted 02-20-2014 10:31 PM

I did get my money back from HD. when you think about it LED prices are much higher than CFL lamps but the quality does not justify that high price,I’m paying for a Mercedes but not even getting a Chevy Cruze LOL.
To be fair though you are right about led lamps/electronics not liking the hot temperature and that is probably what did them in

-- Ken from Ontario

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tefinn

1217 posts in 1159 days


#4 posted 02-20-2014 11:20 PM

Ken, you’ll need to stick with the halogen bulbs over you’re range. As already mentioned, they don’t like the extreme heat that they are exposed to there.

LEDs are the future of light bulbs, but they’re not quite there yet. The cost is still too high for me and the light they cast isn’t very appealing no matter what “color” light you get. They do work as well as they say, if used in the right location. I have a sensor nightlight in the hall leading to my bathroom. The hall is dim so the nightlight is lit 24/7. I changed to a 7watt equivalent LED about six years ago and it’s still going strong. That’s already double it’s expected lifespan. I used to go through at least two bulbs a year.

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

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KelvinGrove

958 posts in 635 days


#5 posted 02-20-2014 11:24 PM

This is so outrageous, I must have it wrong. I have to double check. Mean time, I have a stockpile of “real” light bulbs.

-- Tim P. Calhoun GA. Don't cry because it's over, smile....because for 7 glorious miles, everyone thought you were the real bus driver!

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ex-member

175 posts in 497 days


#6 posted 02-20-2014 11:37 PM

LEDs are low voltage devices. There will be a resistor. if that’s crap so is the bulb. They should last eons. You must have bought crappy ones. Mine are over a year old in similar placement with no signs of trouble (there’s a curse if ever there was one). Try to get your money back. Resistors run hot due to their very nature. A range hood two feet above an element won’t bother the electronics which run much hotter regularly than that. My amps are HOT. They don’t die because of it.
[edit] capacitors can also fail…they come in many forms and are used to “smooth out” the electricity. They can be incredibly poor. I’m guessing at this point that a cap has shorted. I’d still complain. If you put your hand six inches above a hot element how long can you hold it there?. With the element still hot put your hand six inches from the light directly above it. If it doesn’t have the same effect, heat is not the problem.

Here’s an interesting video about what’s inside the bulb… http://www.youtube.com/watch?v=x7SaLgDsYVk

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mrjinx007

1796 posts in 490 days


#7 posted 02-21-2014 02:10 AM

I purchased some led lights from an automotive shop a year ago and it has been functioning just fine. instead of using it in the car, I hooked it up to nine volt battery for a woodworking project and so far so good. I think the auto industry is well ahead of the residential industry at this time.

-- earthartandfoods.com

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distrbd

1261 posts in 1169 days


#8 posted 02-21-2014 03:22 AM

Mrjinx,the very first time I heard about led lights was when they first used them in the cars like brake,back up,signal lights.you could be right about auto industry being well ahead of the game.

oldsaxon,I’m glad to hear that using them in the range hood was not likely to cause their failure,one thing is for sure ,paying high prices for these bulbs does not guaranty them to be top quality.the ones that failed were not cheap,( $20 / each ).
After watching that video you linked I decided to order 3 different types of GU10 base lights form ebay ,will use them in 3 different locations in the house,(laundry room,bathroom,kitchen) just to see for myself which type will perform best ,then order those from then on.

-- Ken from Ontario

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ex-member

175 posts in 497 days


#9 posted 02-21-2014 08:33 AM

I didn’t mean to imply you bought them cheaply, just that they were not made well. I suspect all of them are made overseas and that the big brands buy from many sources and slap the brand name on them all. Quality control is left up to the factory and…well it isn’t always. There are quite a few components in one of those things…not like in the good old days when there was just a wire in a vacuum. So many steps in the supply chain and any one of them could be “maximizing their profit”

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KelvinGrove

958 posts in 635 days


#10 posted 02-21-2014 04:00 PM

Here is the pic I meant to post while complaining about the cost of this.

-- Tim P. Calhoun GA. Don't cry because it's over, smile....because for 7 glorious miles, everyone thought you were the real bus driver!

View DrDirt's profile

DrDirt

2542 posts in 2465 days


#11 posted 02-21-2014 06:08 PM

This is why I say Billy Mays Commercial – this is what I bought – - then read the actual warrantee fine print !

On the back they say 22.8 years operated 3 hours/day…. then the warrantee is 6 years, based on the same 3 hours/day.
Anyone thinking that they will actually last 22 years is crazy…. equally problematic is that as they get cheaper – they will get WORSE, not better. You can’t tell china to cut the price in half, and expect that no corners get cut to get you there! Fact is – if they just had a 5-7 year bulb – would anyone be upset? do they really have to Promise on the Front. 22 years life, but guarantee it for 6?

-- "If we did all the things we are capable of doing, we would literally astonish ourselves." Edison

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ChuckV

2464 posts in 2250 days


#12 posted 02-21-2014 07:54 PM

The 22.8 year claim makes be think of what Claude Pepper said:
A stockbroker urged me to buy a stock that would triple its value every year. I told him, ‘At my age, I don’t even buy green bananas.’

-- “While the world with closed eyes sleeps, The sky knows and weeps - steel rain. ” ― Nathan Bell

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distrbd

1261 posts in 1169 days


#13 posted 02-21-2014 08:05 PM

Dr Dirt: “If they just had a 5-7 year bulb – would anyone be upset? do they really have to Promise on the Front. 22 years life, but guarantee it for 6?”
I think the only reason people would complain would be the price,compact fluorescent Lights are much cheaper than led and will last 5-7 years so most people will not think the power consumption will warrant the big jump in price.
Kelvin,that price is just crazy,$40 ?it better last 25 years if not more.
Old saxon I know exactly what you mean about the quality control may be the reason why some led lights fail prematurely that’s why I ordered a few directly from China to see if lower price lights are really any worse.

-- Ken from Ontario

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bigblockyeti

1737 posts in 443 days


#14 posted 02-21-2014 08:42 PM

I bought a couple for my motion activated outdoor spotlight. No issues yet, but the fixture is designed to ramp up the voltage and ramp down as well to extend the life of a normal halogen spot, ironically I no longer need this. I think the heat very likely could have been the problem, even if it was the electronics, not worth dismantling as you almost certainly wouldn’t get your money back that way. Just check in one of my latest motorcycle magazines, they finally have an LED headlight replacement that has light output close to that of a halogen. It’s very expensive and incorporates a tiny cooling fan to help dissipate the heat generated to keep the diode from suffering an early demise.

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CharlesA

1911 posts in 520 days


#15 posted 02-21-2014 08:50 PM

We have several of the Phillips led buns that look just like incandescents. Three of them have had a problem of going out, them coming back on later. I wrote Phillips customer service, and they’ve sent checks to cover replacement. I wouldn’t hang in there except I much prefer these bulbs to CFLs.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

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