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Landing light stays on!

Discussion in 'Electrics UK' started by eyebrows, 14 Jan 2014.

  1. eyebrows

    eyebrows

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    Hi all I've just noticed this. We have lived here for over 4years now so confused as to why this would happen. A bulb is missing.

    Off
    [​IMG]


    On
    [​IMG]
     
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  3. Taylortwocities

    Taylortwocities

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    Do we assume that one photo is with the switch off, and the other with the switch on??? Please explain………..

    What type of lamps are in the fitting.
     
  4. eyebrows

    eyebrows

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    Yes one pic is with the switch off and the other the switch on. It's a landing light so one switch downstairs and one upstairs.

    Screw in bulbs possibly halogen (ikea) will have to check tomorrow as kids in bed.
     
  5. Lectrician

    Lectrician

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    I bet it only glows dimly when other lights upstairs are on. It is operating in series with the other lights when off due to two backs being confused (a sw live and neutral muddled).
     
  6. eyebrows

    eyebrows

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    Nope. Every light I'm the house is off and it's still on.
     
  7. AndyPRK

    AndyPRK

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    are they LED's fitted ?

    You say the 3rd shade doesn't have a lamp? Maybe this gets stuck on too, or causes worst problems when fitted! hence removed!
     
  8. eyebrows

    eyebrows

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    The bulb had gone in the 3rd lamp that's all. They are led bulbs.
    If you unscrew one it makes the other brighter?

    [​IMG]


    I've just changed the fitting and it's fine now. But they must have been getting power from somewhere??

    [​IMG]
     
  9. mogget

    mogget

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    I had this problem with LED bulbs once when water got into a switch. LED bulbs need very little current to light them slightly. The incandescent bulb would not be lit by this very small current.

    Not that I'm any electrical expert mind!
     
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  11. zebedee2001

    zebedee2001

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    It's more than likely caused by capacitive coupling from a live wire or a neon light switch surround!
     
  12. Lectrician

    Lectrician

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    Didn't realise they were LED. Still quite a strong glow for capacitive coupling though.

    If you refit the old light, and place a NORMAL lamp in one of the holders, do the other two LED ones then extinquish?
     
  13. maltaron

    maltaron

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    Capacitive coupling can make an LED lamp glow quite bright in total darkness. It occurs when the normal method of using twin and earth for switch drops is used. I cured mine by using single insulated and sheathed cables.
     
  14. Taylortwocities

    Taylortwocities

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    A lack of an earthed cpc in the cables can make this feature worse. Can be fixed by installing an RC network component across the light fitting L&N terminals.
     
  15. Adam_151

    Adam_151

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    As does reversed polarity
     
  16. 333rocky333

    333rocky333

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    Do they make that with insulated leads, even with sleeving fitted i would have thought the live could end up slightly exposed
     
  17. Taylortwocities

    Taylortwocities

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    One could quite easily sleeve one lead brown and one blue, if you had a mind to. A little care will make sure that there's no exposed metal.
     
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