John Rumm wrote:
Dan Gravell wrote:
I have four halogen LV downlighters in my kitchen, controlled by one
dimmer switch. All of them use dimmer transformers. I once had to
change the chocolate box on one of them that melted, but other than
that they have given three years of trouble free operation.

Recently they have been failing to turn on. This affects all of the
lights, not just one. I noticed that if I turned the dimmer down (made
the light more dim) they would then come on, and turning the dimmer
back up would turn them off again.

It's rather intermittent, sometimes they turn on fine at full power,
other times not.

I took a look in the switch unit but all the connections seem fine
there.

Any other ideas?


It sounds like you have several individual transformers - one for each
lamp. Hence the only common point is the switch. So I would suspect that
first.

frankly, its nor clear what you have.
separate dimmers and separate transformers, whether transformers are
electronic of toroidal or indeed anything.