Kitchen Led Lighting

[Nivlo]

Looking for advice regarding the above. I have 9 kickplate LED lights in my kitchen & I also have 3 under unit triangular lights with halogen bulbs, they all come on at the same time. 1 halogen bulb blew last month so replaced with an LED, all fine then another blew last week, replaced this with an LED, now when I put the lights on there is a buzzing noise coming from what I assume is the transformer above the kitchen units, then after a minute under unit lights start to flicker then go out. Wondering if I need to change for a stronger transformer & if so is this easy enough?

 

[Manator]

The Halogen and LED transformers are not the same. Halogens are supplied via a transformer, however LED uses a driver.

They look the same, which is why there is some confusion sometimes.

 

[Sidewinder]

Are they direct form & function drop in replacement LED units for the original specification lamps.

What was the original spec by the way?

What LED units have you replaced them with?

 

[Murdoch]

Time to rip out all the halogen and replace with all LED, transformers and all!

 

[Nivlo]

Kitchen was done 4 years ago. It was done with 18 halogen spots & 9 LED kick plate lights with 3 under unit halogen lights. I've been replacing the spots in the ceiling with LED & was unsure if I could just do straight swaps with then but they all work fine with only 7 more to change, thought I would do the same with the under unit ones until this happened. Don't know too much about this but the thing buzzing on top of kitchen units is an electronic transformer, it says on it ATMO 60 PRI 230/240 v 50/60hzsec 11.5/12v 20-60w

 

[Sidewinder]

OK, are the LED lamps you are fitting around 12V rated?

If not, there is problem number 1.

The next potential issue is the transformer has a minimum load of 20W, if you drop below this, then you will have problem number 2.

How does your scenario stack up against these observations.

 

[steptoe]

I think you have it sidey,  

Most likely 10w halogen lamps being replaced by 2w LED, hence with 2 halogen it was still over 20w, now it's dropped under it. 

 

[kerching]

+1 to,what sidey said

You have underloaded the transformer . The last halogen you had kept it above the threshold

Fitting the proper driver should cure it

Just concuring

 

[Nivlo]

tried to post a link to the LED bulb I got on Amazon but it won't let me post a link. Here is the description.

Aurora 12V G4 Unidirectional Capsule LED Bulbs - Cool White - 20W equivalent [Energy Class A]

It does say they are 12v however it says 20W equivalent, not sure if that reflects the true wattage

 

[Sidewinder]

It does not, what is the actual wattage?

If, it is these:

http://www.amazon.co.uk/Aurora-12V-Unidirectional-Capsule-Bulbs-Warm-White/dp/B003RU0PV4/ref=sr_1_fkmr0_1?ie=UTF8&qid=1422806839&sr=8-1-fkmr0&keywords=Aurora+12V+G4+Unidirectional+Capsule+LED+Bulbs+-+Cool+White+-+20W+equivalent+%5BEnergy+Class+A%5D

Then they are only 2.2W each.

So, have you gone below your minimum loading?

 

[Nivlo]

Yes I think that's the ones, so looks like the 3 under unit lights & the 9 kick plate ones are b low the minimum rating. Is it easy enough to replace the transformer or driver if that's what I'm looking at above the units?

 

[Nivlo]

Any ideas what kind I would need to run the 9 small LED lights on the kickplates & 3 under unit lights as LEDs? I've had a quick look but not sure if you get transformers that have no minimum loading, if the 3 under unit lights only make up 6 watts, not sure what the kickplate ones would take it up to. Thanks for all the replies already.

 

[pewter]

I had a customer that had bought a load of LEDs from one of the well known LED websites selling a ton of rubbish from China.

He had the same problem you had.

Got an LED driver and the problem was solved