Dimmer switch buzzing/light blinking

[varez]

I installed my 2-way dimmer switch, and there is light - Hallejulah!!!
However, when set to anything but min or max, the dimmer is buzzing quite loud and the halogen light is blinking.
I checked the connections and it all looks good - is the dimmer simply crap or could it be faulty? Bough it from Robert Dyas for £13, so I guess I shouldn't expect much, but still...

Cheers

 

[RF Lighting]

What is the rating of the switch? (in wattage found on the back)
What sort of lights are they? (Low voltage halogen, mains halogen etc)
How many lights are you trying to dim?
What is the wattage of each lamp?

 

[varez]

Dimmer: 1 gang, 2-way - 250w
Halogen: only one 50w halogen - not sure if it's a main

Thanks

 

[Steve]

Dimmer: 1 gang, 2-way - 250w
Halogen: only one 50w halogen - I think it's a main, as it is wired

Thanks

does the dimmer have a minimum rating?
You mention it is 2-way. Check with the instructions which terminals you should connect to - its not always the way you might think.
Does the light have a chunky base, which could be used to house a transformer? Can you take a picture of its innards?

 

[varez]

I connected the dimmer according to the instructions included (connected to R1 & C - R2 ignored)

Here is a picture of the halogen - I never saw this type of connection before. Could this cause the problem?

 

[RF Lighting]

That is a low voltage halogen lamp, and I doubt if the connector is to blame. Can you remove the fitting from the ceiling and gently pull on the wiring until the transformer comes out of the ceiling, then post us a picture of the transformer. Also a pic of the back of the switch would be nice (just to double check wiring and dimmer type)

 

[breezer]

i bet its a non dimable transformer

 

[RF Lighting]

That was my thinking too.