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glass cleaner damaged my DLP 60" tv screen -- any way to fix it???

B

Beowulf

Jan 1, 1970
0
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).
 
B

Beowulf

Jan 1, 1970
0
That's exactly what could have happened. If any cleaner got between
the screen and the outer protective screen, it will cause this type of
problem. There shouldn't be any damage to the screen, but it may take
a while for it to dry completely. It might have to be disassembled
for proper cleaning, but there's no serious damage. Glass cleaner
shouldn't hurt the screen if used occasionally.
...

Spot is almost gone from drying, and like you say I might at worst have to
pay $100 for a repairman to come and clean the inside of the screen if
some of that "black" residue sticks and does not evaporate. Man that is
much better than a new TV, or $800 to replace a screen!
 
D

Deke

Jan 1, 1970
0
Beowulf said:
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
 
G

GMAN

Jan 1, 1970
0
...

Yeah I am not feeling good about what happened, might call the "TV Doctor"
repairman today, see what he says, but curious if anybody else has heard
of what happened, seemed if might be common if caused just by cleaning the
screen. Not sure what I will do if it can not be repaired, I guess try
and sell it used, buy a new one.
#1 Do not use GLASS cleaner on PLASTIC.
#2 Never spray any cleaner directly on a Tv screen
#3 Do NOT tell the repair person what happened. Maybe they will just repair it
under warranty.
 
G

GMAN

Jan 1, 1970
0
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).
Just whatever you do in the future, never spray cleaner directly on the tv
screen, apply it to a cloth then clean with that. Also never clean a TV with it
turned on. Static just attracts dust like a magnet.
 
A

AZ Nomad

Jan 1, 1970
0
#1 Do not use GLASS cleaner on PLASTIC.
#2 Never spray any cleaner directly on a Tv screen
#3 Do NOT tell the repair person what happened. Maybe they will just repair it
under warranty.

I agree with #3. #1 is overstated. Glass cleaner will eventually discolor
the screen, but one application won't have any noticeable effect. No
ammount of applications will crack a screen.
 
A

AZ Nomad

Jan 1, 1970
0
Just whatever you do in the future, never spray cleaner directly on the tv
screen, apply it to a cloth then clean with that. Also never clean a TV with it
turned on. Static just attracts dust like a magnet.

Bullshit. DLT TVs don't have any voltage on the screen. You're thinking
of a CRT.
 
G

GMAN

Jan 1, 1970
0
I agree with #3. #1 is overstated. Glass cleaner will eventually discolor
the screen, but one application won't have any noticeable effect. No
ammount of applications will crack a screen.
You DO NOT want to use any cleaner with ammonia on plastic, period!
 
R

Roy L. Fuchs

Jan 1, 1970
0
You DO NOT want to use any cleaner with ammonia on plastic, period!

The best, non attacking cleaner I have found for both optically
coated CRTs as well as plastic coated FPDs is the instant hand cleaner
liquids out there (non-lotion). It has a milder alcohol in it. It
cleans, leaves no film, and does not attack optical coatings or
plastic.

I use "Germ-X Hand Sanitizer". It works great. I put it on the
cloth, and so there is no liquid mass to leach under a layer by way of
capillary attraction, as is what occurred in this case.

Great shtuff!
 
G

GMAN

Jan 1, 1970
0
The best, non attacking cleaner I have found for both optically
coated CRTs as well as plastic coated FPDs is the instant hand cleaner
liquids out there (non-lotion). It has a milder alcohol in it. It
cleans, leaves no film, and does not attack optical coatings or
plastic.

I use "Germ-X Hand Sanitizer". It works great. I put it on the
cloth, and so there is no liquid mass to leach under a layer by way of
capillary attraction, as is what occurred in this case.

Great shtuff!
More appropriate would be the cleaner meant for plastic eyeglasses.
 
R

Roy L. Fuchs

Jan 1, 1970
0
More appropriate would be the cleaner meant for plastic eyeglasses.

Not at what they charge for it.

Same shit, different bottle, and much lower price, essentially.

I know how to shop for chemicals, just like I know how to use the
right ones.
 
L

Leonard Caillouet

Jan 1, 1970
0
cross posting deleted

Roy L. Fuchs said:
Not at what they charge for it.

Same shit, different bottle, and much lower price, essentially.

I know how to shop for chemicals, just like I know how to use the
right ones.

Home Depot has a product from GE called Cleaner for Lexan for $2.99 per
quart. I have tested it on coated lenses, lenticular screens, mylar
mirrors, fresnel lenses, and first surface mirrors and left it on in
quantities for extended periods of time repeatedly and found it to be safe
on all of them. The also sell a pack of microfiber cloths for the same
price. The combination is the best I have found for cleaning screens, etc.

You might also see if they have an attitude or asshole tester there, Roy.
Mine seems to go off when I see your posts sometimes.

Leonard
 
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