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Re: [K12OSN] HELP: Monitors and Lab Temperature

Actually, he isn;t kidding, his monitors may be getting darker.  Not
because of the ocaen air getting into them but because of age.  We have
many here that are getting dim, too.  Some are pushing unusable because
of dimness.

Being in the TV repair business for several years, when a TV CRT got dim
like that we could use our rejuvenator and get anywhere from a couple of
months to several more years out of the CRTs on TVs.

I am going to investigate the purchase of one of these devices and try
it on the computer monitors.  Some are only 3 years old and are pretty


> On Tue, May 07, 2002 at 10:45:12AM -0400, aust_txv ACCESS-K12 org
> > Hi Warwick,
> > I am sure others will tell you "cold and clean" equipment is happy
> > equipment.  We run AC in 5 of our labs and 1 server room in an air
> > conditioned building.  Clean is a good idea.  Air handlers help a
> > Keep'em cool and clean.    CRT issue...here's a stretch, how about
> > ocean air re-acting with the material  on the inside of the tube...
> CRT issue: 
> You mean the ocean air is somehow getting inside the CRT tube, which
> a vacuum tube ? Without a huge puff of smoke and sparks ?
> And the montitor is somehow continuing to function in a diminished
capacity ?
> Respectfully - are you gently kidding someone ? :-)
> > Tom Ventresco
> > Austintown Local Schools
> > 
> > --On Tuesday, May 07, 2002, 6:07 PM +0200 Warwick Chapman
> > <budgee glenwoodhighschool co za> wrote:
> > 
> > > Howdy
> > > 
> > > I am about at pulling-hair-out stage with respect to CRT monitors
> > > this school! Age, I can understand is an issue, as some of them 
> > > are 5+ years old, but so very many of them are going dark! Some 
> > > are so dull you can hardly see anything. Surely there must be a 
> > > common cause of this. It is costing the earth to sort them out.
> Are these monitors going completely dark with no image at all 
> or are they just getting dimmer ?  How big are they and how often
> are they physically moved ?  Also is there a particular brand
> and or model which is having the problem ?
> What voltage does ZA use for AC wall current ?  (there may be an
> issue with the CRT power supply),
> Aging always causes monitors to become dimmer.  The chemical coatings
> on the inside of the front of the tube are wearing out after years of 
> being electrically stimulated.  Just like a flourescent light fixture
> which produces its "light" the same way.
> Heat can certainly accelerate the aging of both the CRT and the
> itself.  Especially with the newer hotter CPU and graphics devices
> cooling is even more essential.
> if you don't already do the following these ideas may help a little
> Try slowing the aging by having configuring your software to drop the
> into energy saving modes whenever the cpu is idle for more than <N>
> where N is 5 or 10 minutes.  Or some other value agreeable to your
> user population.  Also - adjust the contrast and bright controls to
> than full bright and highest contrast.  This will also slow the aging.
> Its unclear if shutting them off at night extends their life or
> them even more than overnighting in "sleep" mode.
> Personally I run mine at full bright and high contrast because I
> them that way, but there is a cost.
> If any part of the above offended please be assured that it was 
> not meant to.
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Doug Simpson
Technology Specialist
DeQueen Public Schools
simpsond leopards k12 ar us
Tux for President!

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