The switch at the top of the photo is a dimmer switch, push to turn on/off and turn to dim.. But the dim function has died and worse, it flickers a bit now..

I'm fine with electrics but I can't work out how to get the damn box off.. There are no visible screws so I assume it's some sort of snap on fit to fixed back plate.. But i've poked and prised and pulled and prodded, nothing.. I don't wanna break it so wondering if somebody knows the trick?

And where to get another if taking it off and screwing around with it fails? Local jumbo and migros DIY didn't have similar.

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It looks similar to a dimmer I have in my place. Pull the knob straight out. There should be a screw behind that.

Yes as above, screws are behind the knob, you need to pull it off before getting something in there.

You say it's flickering? Doe your light fixture have more than one bulb, I.e three sets of wires connected to the one input?
If so sometimes dimmer switches flicke unless it is on full when there is more than one bulb in the fixture.

Childish I know but this made me laugh.

Thanks people .. Correct answers..

Just after posting i went back to it with the swiss army knife and wedged out the turny bit revealing a nut holding it all together..

As for the number of bulbs etc, the switch is feeding three light fittings in parallel, all same big long dangly things. Everything worked fine until a few weeks ago when the dim just stopped working. Giving it a hit sometimes makes the lights flicker, sometimes they flicker on their own so i assume the rheostat is dodgy.. When it daylight and i can kill the power I'll mess with it.

Cheers!

Most important question is:

why do Swiss love shit brown for everything, so much ........ even electrical fittings?