Re: [APD] Problem with MH light

["Justin Collins" <jucollin at du_edu>]

I'd second that.  I'm more inclined to think its a wiring problem in the
ballast or fixture.  Bulbs are pretty much self-contained, and if it was a
bulb problem you'd see signs of scorching on the inside of the bulb or
around the mogul base.  If you can warranty it, do so.  If you can't, I'd
seriously consider replacing it.  Expensive, but less so than getting burned
to a crisp because of a stupid preventable accident.

Justin Collins

----- Original Message ----- 
From: "S. Hieber" <shieber at yahoo_com>
To: "aquatic plants digest" <aquatic-plants at actwin_com>
Sent: Saturday, January 31, 2004 2:04 PM
Subject: Re: [APD] Problem with MH light


> Unless you *know* the smoke wass not coming from the
> ballast, I wouldn't want to start it without having a look
> at the internals. If the transformer developed any shorted
> windings and started smoking, the telltale odor is usually
> hard to mistake for any other -- but it need not be strong.
>
> I'd want to inspect for heat damage or spark marks from the
> outlet throughout the circuit to the bulb socket.
>
> Note: If the ballast is under warranty, opening it will
> probably void the warranty!
>
>
> Scott H.
>
> --- Steven Pituch <spituch at ev1_net> wrote:
> > I just had a problem with one of my two Hamilton 175 Watt
> > MH pendant lights.
> > When one of the lights started to flicker on as they do,
> > I heard a fizzling
> > noise.  I quickly looked a the bulb and the light was
> > flickering as it made
> > the fizzling sound.  I looked at the top of the pendant,
> > and smoke was
> > pouring out of it.  Then the GFCI went off and shut
> > everything down.  I
> > unscrewed the bulb and it looks OK (not burned).  It has
> > a ceramic socket.
> > The socket looks OK.
> >
> > So I have to figure out what is broken.  It looks like
> > there is a switch in
> > the bulb.  It was probably what was making the fizzling
> > sound.  I wonder if
> > I need to just buy another bulb (after I inspect the
> > wiring to the mogul
> > base), or do I need to take the power supplies apart (the
> > good and bad one
> > for comparison) and see if the capacitor or transformer
> > is bad.
> >
> > Any advice on a plan of attack?  The bulb is about a year
> > old (about 4000
> > hours on it).  It is a standard HomeDepot Phillips bulb.
>
>
> =====
> S. Hieber
>
>  - - - - - - - - - -
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> at the AGA 2004 Annual Convention -- Nov -- Baltimore
>
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