GU10 LED Spotlights fading

[Electron]

I changed five MR16 Halogen lights for a customer in March to LED. Used Ledhut Fire Rated GU10 with 5.8W lamps. About a month ago three of the lamps were not very bright and one stopped working. I told Ledhut who sent replacements (the offer a five year guarantee) and I replaced them. Now the same problem is back. Asked Ledhut for advice but none forthcoming. Lamps are outside under deep eaves. The originals MR16's worked for 20 years with no problems. Any suggestions?

 

[Midwest]

I suspect water and or damp are getting into the lamps, just like my flipping deck lights, which are allegedly IP65 rated, yet I'm on my third set!

Edit; What's the IP rating for your cans?

 

[123]

Get some decent GU10 lamps, would recommend Enlite.

Never know of anyone to install a fire rated downlight into the soffit before

 

[Octopus]

I'd say you were very lucky that 20 year old transformers will drive LED's - or is there just one transformer?

 

[Leesparkykent]

I would touch anything LED hut sell with a barge-pole. I know someone who done their whole house in their dimmable GU10's and had nothing but dramas. Dimmers not dimming the lamps correctly, noticeable humming and all using dimmers that that LED hut claim are compatible. I would purchase some other brand of lamps.

 

[123]

I'd say you were very lucky that 20 year old transformers will drive LED's - or is there just one transformer?

He's fitted GU10's so the transformer(s) should be long gone

 

[Octopus]

He's fitted GU10's so the transformer(s) should be long gone

Oops, missed that rather important point...

Megamann would be my choice ..... not cheap, but only ever had 1 failure.

 

[Midwest]

I would touch anything LED hut sell with a barge-pole. I know someone who done their whole house in their dimmable GU10's and had nothing but dramas. Dimmers not dimming the lamps correctly, noticeable humming and all using dimmers that that LED hut claim are compatible. I would purchase some other brand of lamps.

I dunno, fitted some of their lamps nearly ten years ago in my house, still waiting for them to go u/s so I can't fit something a bit more modern.

 

[buzzlightyear]

I changed five MR16 Halogen lights for a customer in March to LED. Used Ledhut Fire Rated GU10 with 5.8W lamps. About a month ago three of the lamps were not very bright and one stopped working. I told Ledhut who sent replacements (the offer a five year guarantee) and I replaced them. Now the same problem is back. Asked Ledhut for advice but none forthcoming. Lamps are outside under deep eaves. The originals MR16's worked for 20 years with no problems

are their any led drivers in or normal transfomers

 

[ImpededLoop]

are their any led drivers in or normal transfomers

The LED's are GU10 Buzz, so mains voltage.

 

[Electron]

I suspect water and or damp are getting into the lamps, just like my flipping deck lights, which are allegedly IP65 rated, yet I'm on my third set!

Edit; What's the IP rating for your cans?

I agree it may be damp. But why were the previous MR16 lamps unaffected? Replacements are rated IP20.

 

[Electron]

Get some decent GU10 lamps, would recommend Enlite.

Never know of anyone to install a fire rated downlight into the soffit before

I am sure Enlite will work and I'll change them if necessary. Used Fire Rated as this is the basic spec. from Ledhut.

 

[123]

I dunno, fitted some of their lamps nearly ten years ago in my house, still waiting for them to go u/s so I can't fit something a bit more modern.

LED Hut wasn't trading until March 2011...

 

[Electron]

I'd say you were very lucky that 20 year old transformers will drive LED's - or is there just one transformer?

No transformers used with replacement GU10 lamps.

 

[Electron]

LED Hut wasn't trading until March 2011...

I bought them from Ledhut in March 2017. Don't know who made the previous ones,which were fitted about 20 years ago. I didn't fit these.

 

[Electron]

I would touch anything LED hut sell with a barge-pole. I know someone who done their whole house in their dimmable GU10's and had nothing but dramas. Dimmers not dimming the lamps correctly, noticeable humming and all using dimmers that that LED hut claim are compatible. I would purchase some other brand of lamps.

I have bought from them for some time and this is the only problem I have had. I buy V Pro Dimmers from them and they are fine.

 

[I2C]

LED lamps shouldn't "pop" (suddenly stop working) compared with other types of lamps, instead they usually fade over time and their life is heavily influenced by temperature. DigiKey states "The temperature to which the LED is subjected is a primary contributor to the rate of dislocation production. A hotter chip will form dislocations faster and hence fade quicker."

Presuming that the LED lamp you've chosen is of reasonable quality with a suitable IP rating and in a suitable enclosure, it's likely that temperature could be responsible as shown above. However it's possible that transients (surges) could also be responsible as the result of any large inductive loads, or even naturally occurring during electrical storms.

 

[Midwest]

I agree it may be damp. But why were the previous MR16 lamps unaffected? Replacements are rated IP20.

LED GU 10 lamps have a pcb and loads of other electrical wizardry, the MR16's don't. Where was the MR16 transformers located?

My deck lights I mentioned, went a bit dim and then u/s one by one. IP20 will do didley to prevent moisture affecting the lamps.

 

[Midwest]

LED Hut wasn't trading until March 2011...

-------s to you, you've ruined my story now I did say 'nearly ten years', time flies when your older.

 

[Rpa07]

That’ll be a BIG NO!

Nice website though - needed proof reading before activating but then if I wrote a website in mandarin, it would probably need a good look at!
I like the staff photos - I feel that I know them now!
Don’t tell SBO about the proof reading - he’ll be frothing at the mouth!

 

[Midwest]

That’ll be a BIG NO!

Nice website though - needed proof reading before activating but then if I wrote a website in mandarin, it would probably need a good look at!
I like the staff photos - I feel that I know them now!
Don’t tell SBO about the proof reading - he’ll be frothing at the mouth!

Think he's been censored, post no longer there, less I got the wrong thread.

 

[Rpa07]

Those moderators are illusionists!
When posts disappear, it makes the thread disjointed BUT I understand and I’m over the disjointednessness of it all!

 

[I2C]

Those moderators are illusionists!

To be fair, I'm really happy with the moderators on this forum. I've been on other forums (*cough* Arduino forum *cough*) and did my best to help others out with their projects and questions with plenty of information, only to discover that my posts where deleted and re-posted under an admin's name solely to take the credit (which seemed silly, no one should look for fame or recognition, but after a lot of research it's a shame to be deleted).

Moderators here have been incredibly helpful and fair in my opinion, even when I've posted incorrect information and then later corrected my mistakes, they've always been understanding and recognise that nobody is perfect. Importantly, if we make a mistake or disagree with a fellow user or find incorrect-information, the manor in which we convey our thoughts is often greater than the thought it's-self.

No offence meant at all, just my honest and humble opinion.

 

[Rpa07]

Agree, the mods on this forum are great, trusted and respected Sparks. They have worked hard over the past few years to tidy up the forum. There used to be sawdust on the floor of this establishment but now we have carpet tiles.
We’ve lost a lot of experienced contributing members to the change but with that came a more tolerant and helpful forum. I have learnt so much and continue to do so.
Any look over the archives will show frequent times where a ‘virtual fisticuffs’ was imminent - makes for cracking reading BUT I prefer it now.

‘Put ‘em up, Put ‘em up!’

 

[pirate]

Replaced all my GU10s, inside and out, a year ago-all 44 of them-and with two women in the house (wife and daughter, before you ask!) you can imagine the saving on electricity. Hall, 9 @ 50W, kitchen, 7 @ 50W, daughter's bedroom, 10 @50W etc etc...and of course they are "always on". Anyway, 5 of these new LED lamps are located in the garage soffit at the front of the building and they get a bit of a beating from the weather, but so far no failures at all even though it's always raining here...in fact I have had only 2 fails throughout the relacements, both internally in a nice cozy room. I thought it might be due to the insulation in the roof space but hey...these things run cool, right? Obviously, these were very cheap LED bulbs, of a brand many dislike, ( begins with L and ends with AP) but so far they have been absolutely fine, and no issues with getting dim on the outside ones.

 

[Darkwood]

Think he's been censored, post no longer there, less I got the wrong thread.

Those moderators are illusionists!
When posts disappear, it makes the thread disjointed BUT I understand and I’m over the disjointednessness of it all!

That's my fault guys, the old software use to let members see a deletion note but now it is fully removed from your view, I will tidy up if needed chaps although this post removes the disjoint I created , now I know the newer software handles deleted posts in a different way I'll avoid future confusions, soz for the confusion.

 

[GeorgeCooke]

I'd say you were very lucky that 20 year old transformers will drive LED's - or is there just one transformer?

What transformers? He said he replaced MR16 lamps. MR16 means multifacited reflector 16 eigths of an inch in diameter. GU10 lamps satisfy this requirement. GU10lamps in the UK are usually 240 volt.

 

[GeorgeCooke]

LED GU 10 lamps have a pcb and loads of other electrical wizardry, the MR16's don't. Where was the MR16 transformers located?

You need to get your terminology right.
GU10 is a type of base.
MR16 is the size of the multifacited reflector in eights of an inch.

Most GU10 lamps are MR16.

I guess what you are calling MR16 is in fact GU5.3.(another type of base usually used on extra low voltage lamps).

 

[123]

You need to get your terminology right.
GU10 is a type of base.
MR16 is the size of the multifacited reflector in eights of an inch.

Most GU10 lamps are MR16.

I guess what you are calling MR16 is in fact GU5.3.(another type of base usually used on extra low voltage lamps).

I've always got the correct product from the wholesalers when I have asked for MR16 Bulbs

 

[Octopus]

What transformers? He said he replaced MR16 lamps. MR16 means multifacited reflector 16 eigths of an inch in diameter. GU10 lamps satisfy this requirement. GU10lamps in the UK are usually 240 volt.

Like me you haven't read the thread ........... this was pointed out many many posts ago...

 

[GeorgeCooke]

I've always got the correct product from the wholesalers when I have asked for MR16 Bulbs

What do you mean by the "correct product"?

As I said MR16 can be GU10 base, GU5.3 base, E14 base, and probably others.

If your wholesalers give you GU5.3 by default they are idiots and don't understand the product they are selling.

 

[Taz trooper]

Had exactly the same with Wickes 5W GU10s. A slow fade in brightness over time, until most failed prematurely on the mains driver... You get what you pay for, and here it was nowhere near 25000 hour life.