So, I had 5 x 50w MR16s in the bathroom on a dimmer switch.
Years of use & power usage, then I presume the switch died.
It was buzzing & all the bulbs went out individually over a period of a
couple of weeks. Bulbs tested OK, so dead transformers.

I decided to switch to LED & had a couple of Kanlux 0-30W LED drivers in
the garage, as all the old wiring was to be ripped out I decided to do a
proof of concept. Stuck a plug on the driver & wired in the LEDs x 4, they
flickered like a strobe light. This test was using Ideal lever conectors
with 5 ports, in 1x 12v in x4 LED out arrangement. Putting in 1 bulb at a
time with live 12v & no flicker.

Bulbs are Screwfix LAP 3w.

Did a bit of a jig & went with the diagram in the driver instructions, &
daisy chained them in parallel instead x3 this time, still the flicker,
remove 1 bulb & the flicker resolves itself after a second.

Not sure what the problem is here, between bulb cable length? I've done a
youtube demo to show the problem.

https://www.youtube.com/watch?v=Qk5IKwalTpM



Any ideas? Thanks.

What exactly is the power supply? Is it some unregulated transformer or a
switch mode device.
I'd not expect to see much on an old fashioned analogue system but might if
the load was a little odd on the switch mode.
Brian

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"Daniallo" wrote in message
.. .
So, I had 5 x 50w MR16s in the bathroom on a dimmer switch.
Years of use & power usage, then I presume the switch died.
It was buzzing & all the bulbs went out individually over a period of a
couple of weeks. Bulbs tested OK, so dead transformers.

I decided to switch to LED & had a couple of Kanlux 0-30W LED drivers in
the garage, as all the old wiring was to be ripped out I decided to do a
proof of concept. Stuck a plug on the driver & wired in the LEDs x 4, they
flickered like a strobe light. This test was using Ideal lever conectors
with 5 ports, in 1x 12v in x4 LED out arrangement. Putting in 1 bulb at a
time with live 12v & no flicker.

Bulbs are Screwfix LAP 3w.

Did a bit of a jig & went with the diagram in the driver instructions, &
daisy chained them in parallel instead x3 this time, still the flicker,
remove 1 bulb & the flicker resolves itself after a second.

Not sure what the problem is here, between bulb cable length? I've done a
youtube demo to show the problem.

https://www.youtube.com/watch?v=Qk5IKwalTpM



Any ideas? Thanks.

On Sat, 19 Jan 2019 07:28:03 -0000, Brian Gaff wrote:

What exactly is the power supply? Is it some unregulated transformer or a
switch mode device.
I'd not expect to see much on an old fashioned analogue system but might if
the load was a little odd on the switch mode.
Brian

It's a transformer specifically designed for LEDs from 0 to 30 watts.

On 19/01/2019 13:09, Daniallo wrote:
On Sat, 19 Jan 2019 07:28:03 -0000, Brian Gaff wrote:

What exactly is the power supply? Is it some unregulated transformer or a
switch mode device.
I'd not expect to see much on an old fashioned analogue system but might if
the load was a little odd on the switch mode.
Brian

It's a transformer specifically designed for LEDs from 0 to 30 watts.

Put a low power 30w , filament lamp on it like a 21w car bulb and see
what it does to try and identify which is at fault.
You could also try the led on a 12v battery (car)