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Problem with halogen light fitting

Discussion in 'Electrics UK' started by WeeDavie, 11 Dec 2008.

  1. WeeDavie

    WeeDavie

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    We moved to a new home in January. In the dining room is a ceiling light fitting with 4 small halogen bulbs (Phillips G9) controlled by a dimmer switch. Up until last week it all worked perfectly. Then one evening there was a flash and the lights went out and tripped out the downstairs lighting circuit. I found that one bulb had blackened and was obviously gone. When I replaced the bulb the fitting still didn't work. I can't detect any other damage to the fitting. Could it be a problem with the dimmer switch? Can anyone advis eme please?
     
  2. RF Lighting

    RF Lighting

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    Yep.

    A failing lamp can destroy a dimmer switch, although normally they fail in a way which results in the switch part working, but it can no longer be dimmed.

    The dimmer would be my first suspect.
     
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  4. ricicle

    ricicle

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    Some makes of dimmer have a small fuse located in a pull out at the bottom of the switch plate - check this as they can operate when a lamp blows to protect the dimmer !
     
  5. Golaboots888

    Golaboots888

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    I was under the impression that you can't reliably use a halogen light (transformer inside) with a standard dimmer switch.

    I was told the indictance of the transformer resists instantanious current change such as that provided by the thyristor in a dimmer switch.

    Is that right?

    We retrofitted a halogen on a circuit with a dimmer and it worked for a while before going pop, now just the on off switch works.
     
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  7. WeeDavie

    WeeDavie

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    Thanks to RF Lighting. I changed the dimmer switch for a new one today and the lights are now back working perfectly - until the next bulb blows I suppose. Thanks for the helpful advice.
     
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