I have a ceiling light which has about ten small 10w halogen bulbs. It has a dimmer switch. It suddenly stopped working, but I can still hear the 'buzzing' sound that you get with dimmer switches when I try to switch it on. Could it be that one bulb has gone and the whole set won't work? (have new bulbs now so will test at weekend), or could the switch fitting be broken. Any clues?! Many thanks. Just don't understand why it's still buzzing, but not working.

Maria, November 2008

the transformer is still drawing power thats why the switch is making that noise still , but the transformer is not offering the downrated power to the light bulbs.

Find it and replace.

Try bashing it with a heavy hammer while switched on and see if it starts working.

stupid stuart, November 2008

Could be a broken dimmer or a broken transformer often located in the ceiling void.

Peccavi, November 2008