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Puzzled over florescent light behaviour

Discussion in 'Electrical Engineering' started by NOTTNICK, Nov 12, 2007.

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  1. NOTTNICK

    NOTTNICK Guest

    I've just installed 2 new tubes in my fish tank.
    They both light up beautifully for about 1 or 2 seconds (no flicker),
    then go out.
    Leaving them for about half a minute or so, I can turn them on again
    (again only a second or two of light).
    Mains circuit is just fine as there are other appliances attached and
    the bulbsworked just fine until I changed them (neither had blown, they
    were just about 4 years old).
    Any suggestions?

    Thanks
     
  2. Roy

    Roy Guest

    From:(NOTTNICK)
    I've just installed 2 new tubes in my fish tank. They both light up
    beautifully for about 1 or 2 seconds (no flicker), then go out.
    Leaving them for about half a minute or so, I can turn them on again
    (again only a second or two of light).
    Mains circuit is just fine as there are other appliances attached and
    the bulbsworked just fine until I changed them (neither had blown, they
    were just about 4 years old).
    Any suggestions?
    Thanks
    --------------------

    Either the starter or the ballast transformer is gone., you can buy
    replacements for either at your local hardware store [the starter looks
    like small garbage can] if you're not sure open up the fixture & see for
    yourself...

    Roy Q.T.
    Urban Technician
    [I don't make em, I just fix em]
     
  3. NOTTNICK

    NOTTNICK Guest

    Thanks
    I'll check it out.

    Nick
     
  4. NOTTNICK

    NOTTNICK Guest

    Guess what
    It was one of the new tubes!!
    Tested everything else, but forgot the obvious.
    Put one of the old tubes back and it all worked.
    Will get a replacement tomorrow.
    Nick
     
  5. Roy

    Roy Guest

    Re: Puzzled over florescent light behaviour

    Group: alt.engineering.electrical Date: Mon, Nov 12, 2007, 9:15pm
    (EST+5) From: (NOTTNICK)
    Roy wrote:
        From:(NOTTNICK)
              I've just installed 2 new tubes in my fish
    tank. They both light up beautifully for about 1 or 2 seconds (no
    flicker), then go out.
            Leaving them for about half a minute or so, I
    can turn them on again (again only a second or two of light).
    Mains circuit is just fine as there are other appliances attached and
    the bulbsworked just fine until I changed them (neither had blown, they
    were just about 4 years old).
    Any suggestions?
    Thanks
    --------------------
    Either the starter or the ballast transformer is gone., you can buy
    replacements for either at your local hardware store [the starter looks
    like small garbage can] if you're not sure open up the fixture & see for
    yourself...
    Roy Q.T.
    Urban Technician
    [I don't make em, I just fix em]
    Guess what
    It was one of the new tubes!!
    Tested everything else, but forgot the obvious. Put one of the old tubes
    back and it all worked. Will get a replacement tomorrow.
    Nick
    -----------------------
    That's disgusting., They had sold you a defective tube? what a world :)
    Oh' well.

    Roy Q.T.
    Urban Technician
    [I don't make em, I just fix em]
     

  6. Fluorescent lights haven't used starters for about three decades now, if
    not longer.
     
  7. Roy

    Roy Guest

    From:(ChairmanOfTheBored)
    On Mon, 12 Nov 2007 19:13:46 -0500, (Roy) wrote:
    Either the starter or the ballast transformer is gone.
      Fluorescent lights haven't used starters for about three decades
    now, if not longer. ----------------
    This is one of those fish tank fixtures, many of them still use them
    they're usually hard wired & embedded inside the deflector but I've seen
    them with a hidden socket too.

    Roy Q.T.
    Urban Technician
    [I don't make em, I just fix em]
     
  8. charles

    charles Guest

    There are still plenty on sale at the cheaper end of the market.
     
  9. Roy

    Roy Guest

    *From: (charles)
    In an article ChairmanOfTheBored wrote:
    On Mon, 12 Nov 2007 19:13:46 -0500, (Roy) wrote:
    Either the starter or the ballast transformer is gone.
    ---
      Fluorescent lights haven't used starters for about three decades
    now, if not longer. --------------
    *There are still plenty on sale at the cheaper end of the market.
    ----------------
    You'd be surprised,
    Here in The Big Apple I've seen plenty supermarket, candy store &
    restaurant display refridgerators that use them., I was offered 500$ a
    pop to retrofited these older fridges with rapid start electronic
    ballasts., but declined because from experiences with several I'd done
    in the past I found that they are not that easy to access & I cut up my
    hands & fingers too much...I guess the new models are all rapid start
    electronic now,. hopefully.

    Roy Q.T.
    Urban Technician
    [I don't make em, I just fix em]
     
  10. NOTTNICK

    NOTTNICK Guest

    I'm in the UK
    What are those little cylinder things I screw into all my flourescent
    fittings in the kitchen? I thought they were starters (or maybe we are
    30 years behind in lighting tecnology.
    By the way, I can't see any in my fish tank!!
    As I said, it turned out to be the tube anyway.
    Interesting to have started this thread though.
    :)
     

  11. Full sized overhead lighting is rapid start. It seems that small
    devices are still using starters, but yeah... it is behind the
    technological curve.
     
  12. Most of the respondants are in the US and answers based on the US.

    In 230V countries, starters are the norm because they work very well
    with all tube lengths. They don't work as well in 120V countries
    due to the low mains voltage, and even then only with short tubes.
     
  13. Many Ffuorescent lights still use starters nowadays, especially
    cheaper ones on the European markets (230V mains voltage).
    Here bimetal or electronics based starters are normal
    on most fluorescent fixtures that use traditional ballasts.
    The story is different for fluorescent lamps that use
    more expensive electronic ballasts.
     
  14. The Streets

    The Streets Guest

    And smaller (e.g. under the cabinet) fluorescent fixtures still
    use starters in the US. I just replaced a broken FS-5 starter.
     
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