Varilight dimmer get's stuck

[themrcox]

Hi,

Maybe I'm being dim but I'm having a really weird issue with a dimmer. I've changed it twice and also tried a different make. I've checked and had an electrician check the load and it's way onder. I currently have a varilight touch dimmer in place. I have six 12V GU10 lights on the circuit. If I touch the dimmer briefly to turn it on (as works on most other lights in the house) it comes on and then goes off. It then stays off until I turn the whole circuit off. On the other hand, if I touch it for over half a second and let it come on slowly, it works. I've contacted Varilight and after the first quite efficient response email, they haven't got back to me. Any thoughts? I'm guessing it's some sort of latent static but I really don't have a clue what to do. At the end of the day, it's really not that serious but it's just bugging me and I'd love it if anyone had any ideas.

Kind regards,
Alastair

 

[PrenticeBoyofDerry]

You state GU10 lamps on a 12V supply, could you please clarify that the lamps are actually suitable for 12V as I would expect, GU10s to be 240V and GU5.3s/MR16s to be 12V.
Other thing would be to check whether the transformers are dimmable.

 

[winston1]

Transformers are not dimmable. Some switch mode power supplies are, need to check.

 

[333rocky333]

Transformers are not dimmable.

Really, ive seen hundreds of transformers on dimmers

 

[winston1]

Transformers are not dimmable.

Really, ive seen hundreds of transformers on dimmers

Almost certainly not transformers, but switch mode power supplies. Putting o transformer on a dimmer will result in large back emf's 100 times a second.