In a computer lab at my school, there is an NEC Multisync 17+
monitor. When off, fingerprints are visible on the surface. I guess
it has some kind of finish that got eroded by skin oil. Could this be
similar? What is this CRT from again?
> > I've got an old CRT that is decaying
along the glass edges.
>
> Are you _sure_. Glass is normally pretty stable, and if it was really
> decaying I would have expected the CRT to have imploded. There's
about
1/2 a ton of
force on the screen of even small CRTs.
No, I'm not sure. When I first saw it, I thought mold was growing
along
the edges, but closer examination showed that that
"growth" was inside
the
glass, and the patterns were somewhat crystaline.
I'll let you know if
it spontaneously implodes.
> However, there are CRTs that are made with a laminated glass
faceplate -
That's probably it. I saw beads along the edge, so it must be the
plastic
that is crystalizing. I'll still let you know when
it spontaneously
implodes, though :-)
No remaining phosphor? This is strange... What on
earth is going on?
It's possible that the phosphor was simply hidden by the now-opaque
plastic crystal.
So, how do you detect these laminated CRTs, and can they be sealed to
prevent this type of decay?
-- Doug
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