22 Oct
2011
22 Oct
'11
9:53 a.m.
Chris M wrote:
--- On Thu, 10/20/11, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
I think at least one list member had problems even though the screens were
stored in a dry environment. I'm not sure that anyone's ever got to the
bottom of why it happens to some screens and not others :-(
Does anyone know what causes this? So far --
touch wood --
I've not seen
it in any of my machines. And others have in the same
models. What am I
doing right?
keeping them dry. It's elementary my dear Watson. Dec monitors, in my humble experience, are especially
prone.
It's very much an experience thing for sure - I've seen it mostly on HP
(and a Digico screen which had gone particularly rotten). Maybe it's
traceable to a particular set of CRT manufacturers, or specific plants, or
a specific formulation of bonding used at a particular plant, but I don't
know if we'll ever find out for sure!
For the HP 250 I used some resistance wire connected to a 12V PSU to cut
through the bonding and remove the faceplate. As that was just a static
exhibit machine I just reattached the faceplate by sealing around the edges
though - I'm not sure what best practice is to 'properly' re-seal the
entire plate (I'd be particularly worried about getting air bubbles trapped
in there!)
cheers
Jules