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One light on a circuit is not working

  • 04-03-2011 10:47am
    #1
    AxlF
    Registered Users, Registered Users 2 Posts: 132 ✭✭


    Hi,
    I have/had a light in the front room that took 6 GU10 bulbs that works on a dimmer switch. I've never had an issue with it until recently it took a small knock and the lights went out immediately and the fuse tripped in the fusebox turning all the downstairs lights off.
    I flipped the fuse back on and every light but the front room one worked. I removed all the bulbs and tested them in a different fitting and found the one that was gone and discarded it. Then I placed the 5 working bulbs back in the fitting and a brand new one. But nothing happened. I checked the fusebox and everything looks normal, all the other lights on this circuit are working fine and respond to the fusebox being switched on and off.
    I figured something must have burned out in the light fitting, so I then bought a standard light fitting and put that in place with a new light bulb. This is not working either.
    Can anyone tell me what could be wrong?


Comments

  • #2
    Mike2006
    Registered Users, Registered Users 2 Posts: 689 ✭✭✭Mike2006


    It is either a problem at the light switch or at the light fitting:

    Switch: Either Permanent live to switch is gone (unlikley), switch wire from switch to ceiling rose is loose, or dimmer switch is faulty.

    Fitting: Bad connection from switch wire or neutral feed is missing/broken.


    Mike.


  • #3
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    Is the light on a dimmer switch?

    Some of the GU10 bulbs when they go will take out the dimmer switch too. I believe some of the better brands of GU10 have an line fuse built into them to protect the dimmer.


  • #4
    AxlF
    Registered Users, Registered Users 2 Posts: 132 ✭✭AxlF


    Cheers Mike, Dilbert. I'll check out the switch and let you know how it goes.


  • #5
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    ya-the bulb blowing 'took out' the dimmer and tripped mcb


  • #6
    AxlF
    Registered Users, Registered Users 2 Posts: 132 ✭✭AxlF


    Yeah, that was it.
    I replaced the dimmer switch with another light switch and it's all working fine now. The dimmer switch is gone altogether.
    Only thing is, that once I fixed this another light fitting on a different circuit went - but I imagine that's just a timely coincidence.

    anyway, cheers all for the advice.


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  • #7
    AxlF
    Registered Users, Registered Users 2 Posts: 132 ✭✭AxlF


    Right, so all the other lights going off was due to me. When I replaced the dimmer switch with another switch the cables got separated and so while I was getting power to one light, the others on the circuit were disrupted.
    It was all pretty obvious once it was explained to me :rolleyes:


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