Re: Component Salvage - the TV Sets

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 

Modern tubes (say, probably, in the last 20 years) are exceedingly unlikely
to catastrophically implode. They have a plastic coating over the back side
to prevent just this (much like safety glass does) and the front faceplate
is quite strong, particularly if it's a "flat screen" type. (that's why it's
heavy... it's thick, and it's lead glass)

In the special effects business, we used to have to rig explosives to make
sure the tubeface would actually break, since usually, even dropping it from
10-15 feet won't always break it.

That said, a procedure such as Gavin (wrap in blanket and break neck) or
Robert (snap exhuasting tubulation in socket) has advocated is a wise idea.

One other thing to consider is that the phosphors on the inside of the
faceplate are not the healthiest things to be breathing or eating.  The
black aquadag is probably fairly benign, but the rare earth sulfides and
such I'm not so sure of.

The foregoing applies to tubes commonly found in the U.S., western Europe,
etc.  I can't speak for tubes from the former Soviet Union, etc.  I used to
work with someone who grew up in Moscow, and he claimed his parents kept a
bucket of sand next to the TV to put out the fires.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 24, 2004 6:17 PM
Subject: RE: Component Salvage - the TV Sets


 > Original poster: "Gavin Sandison" <gms-at-eclipse.co.uk>
 >
 > I've just had to dispose of three CRTs and found an easy way to release
the
 > vacuum.  I took the back off the TV and set it on some carpet, screen
down.
 > I then removed everything attached to the neck, that might get in the way
 > (tube connector, coils, ferrite).  Then I wrapped a thick duvet (blanket)
 > around the whole thing, leaving enough slack to tape it around the neck of
 > the tube.  With the position of the neck clearly visible, I swung a long,
 > thick beam of wood at the top of the neck.
 >
 > In each of the three cases, the necks broke off at the same point - where
 > they widen into the main tube.  A small amount of the duvet was sucked
into
 > the resulting hole causing the tube to equalise its pressure less rapidly,
 > in a fairly controlled manner.
 >
 > This method is somewhat messy as small pieces of glass break off the neck
 > depending on how hard you strike it.  I have only tried this method with
 > three TVs so use it at your own risk.  I would expect that, as long as the
 > duvet was wrapped around the whole TV, a complete implosion would be
mostly
 > contained within.  However, I have seen a TV tube implode whilst inside
the
 > case and as I remember it was pretty scary.  Large pieces of glass at
 > dangerous velocities.  The 'bang' resulting from the sharp pressure drop
in
 > the air around the TV made my stomach feel as if it had temporarily been
 > displaced!  I have the spectacle on video, if I ever find it I'll post a
 > link.
 >
 > Remember, whenever doing anything that could potentially result in an
 > explosion, or implosion:  Wear goggles, protective gloves, steel toe-cap
 > boots, ear plugs and, preferably, a thick leather jacket.
 >
 > Take care,
 >
 > Gavin
 >
 > P.S.  Please don't use your wife's favourite duvet.  The cost of taking a
TV
 > to the dump is substantially less than buying a new feather duvet...
lesson
 > learned. ;)
 >
 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: 24 January 2004 21:32
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Component Salvage - the TV Set
 >
 > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >
 > They arent really that dangerous as far as I know, I have watched the guys
 > crush the tubes in the truck before. All in all they have probaly taken
away
 > 200 or more tubes for us.
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Saturday, January 24, 2004 12:47 AM
 > Subject: RE: Component Salvage - the TV Set
 >
 >
 >   > Original poster: "Philip Chalk" <phil-at-apsecurity-dot-com.au>
 >   >
 >   > All,
 >   >
 >   > Wow! Even intact, non-gassy ones ?  They're crazy, & would want good
 >   > insurance. Can be risky business for 'unskilled', or unaware people to
 >   > handle large, intact CRTs.
 >   >
 >   > As a kid, being the young 'Mad Scientist' of the neighbourhood, &
 >   > repository for every 'broken' electrical/electronic/electro-mechanical
 >   > device from friends/family/neighbours, I came up with a few methods of
 >   > disposal - some more fun than others.
 >   >
 >   > My Auntie still has a fruit-bowl cut from the faceplate glass of an
old
 >   > B&W CRT. (I broke it's neck off underwater, for a sort-of 'controlled
 >   > implosion')
 >   >
 >   > Phil Chalk.
 >   >
 >   >
 >   > **************************
 >   >
 >   > -----Original Message-----
 >   >   Subject: Re: Component Salvage - the TV Set
 >   >
 >   > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >   >
 >   > Im in the southern US and our garbage service takes tubes with no
 >   > problem.
 >   >
 >   > ***********************
 >   >
 >   >
 >   > Subject: Component Salvage - the TV Set
 >   >
 >   >
 >   >   > Original poster: Matthew Smith <matt-at-kbc-dot-net.au>
 >   >   >
 >   >   > Hi All
 >   >   >
 >   >   > As one always looking out for "bits" for coiling and other
 >   > experimentation,
 >   >   > I've had quite a good find in an old, large TV.  For those on a
 >   > budget or
 >   >   > who, like me, like to work as much as possible with recycled
 >   > components, I
 >   >   > thought I'd share my finds:
 >   >
 >   >
 >   >
 >
 >