Posted by Deke on 01/16/94 11:46

"Beowulf" <beowulf@wayoftheancients.trail> wrote in message
news:pan.2006.05.01.15.15.14.822280@wayoftheancients.trail...
> On Sat, 29 Apr 2006 12:01:20 -0500, Deke inscribed to the world:
>
> > I've read all these posts, and there's no correct answer to this
problem.
> > Whats happened is that some of the cleaning solution has run down to the
> > bottom of the screen, into the U shaped ledge that holds the screen, and
the
> > fresnel lens behind it. It has then "wicked" up between the two sheets
of
> > plastic, and is causing the dark spot. You can probably get the spot to
> > change shape slightly if you press gently on the screen. And its a
very,
> > very small amount of water.
> > So, to fix it, get a hair dryer. Put it on LOW (!!!) and slowly move it
> > back and forth over the wet spot. Dont want to get it hot, just warm to
> > make the liquid evaporate. The spot should
> > disappear, unless the cleaning fluid was very, very contaminated with
dirt,
> > doubtful.
> > No new screen needed....
>
> oh man did i dodge a bullet on this one! The screen is back to almost
> normal, that black rectangle is 95% gone, I had the heat in my home turned
> up to 70 the past couple of days because of cold weather here in northern
> MN, and brought up the hair dryer to do what you said and the spot was
> almost gone! Evaporation from the heat in the house and low humidity. I
> still blew the hair dryer on it for awhile, will do so more later. I can
> live with it the way it is, hopefully more of it will still go away.
>
> I just do not understand what causes the black coloration if it is just a
> liquid, that is the bluish glass cleaner liquid that got up there. Just
> curious, if anybody knows. Polarization of the liquid or something?
>
> Thanks all for the help, even though this time I did not have to buy a new
> screen. I was just SICK over the thought of $800+, I am sure going to be
> VERY careful now about cleaning the TV, taking better care of it, reading
> manuals (ok, yeah right, like we all say we will wash and wax a new car
> the first days after driving off the Dealer's lot, LOL).
>
The water probably changes the refraction angle of the light coming thru the
fresnel, and the front screen. Since the angle of the light coming thru the
screen is different thru the liquid, it looks black, or dark, in comparison
to the "normal" light. Now that you've cleaned the screen, be glad you dont
have to worry about cleaning the dust off the crt lenses inside. Cleaning a
years worth of dust off the lenses in my Pioneer makes a very noticeable
difference. I usually do it in the fall, right before the new TV season
starts. Theres a D-ILA in my near future. Pro series.
Youre welcome.
Deke

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