Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Cleaning the inside of a CRT?

Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?

Thanks!

Matt Roberds

  #3   Report Post  
kip
 
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Another Idiot !!


  #4   Report Post  
 
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Perhaps instead of cleaning it out, you could enamel the inside of it
with a black or clear material that would protect your beer (and your
body) from the chemistry of the tube but allow you to show off its
construction.

  #5   Report Post  
JW
 
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On Thu, 22 Sep 2005 06:44:11 GMT wrote in
Message id: %osYe.76870$Sj1.60499@okepread04:

Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?


Just when you think you've heard everything...

I wouldn't recommend doing this at all.


  #6   Report Post  
bigtom
 
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Waaaay too much spare time.

JW wrote:
On Thu, 22 Sep 2005 06:44:11 GMT wrote in
Message id: %osYe.76870$Sj1.60499@okepread04:


Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?



Just when you think you've heard everything...

I wouldn't recommend doing this at all.


  #8   Report Post  
Bill Janssen
 
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wrote:

Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?

Thanks!

Matt Roberds



If it is a Color tube then there is a metal plate inside. If it is a
black and white or green
tube then you can "probably" dissolve the phosphor.

In any case I wouldn't drink out of it.

Good luck and let us know if you die.

Bill k7NOM
  #9   Report Post  
JANA
 
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There are too many power toxic materials involved in the CRT manufacturing.
This would be taking too much of a chance to determine yourself if the glass
surfaces are safe for what you want to do. The glass itself has a very high
content of lead in it. This type of glass was not classified to hold food or
drink for consumption.

Your best bet is to dispose of the set, and forget about your idea.

If you know a good glass blower, you can have them make for you an imitation
drinking glass of a CRT. This way it will be safe for you to use.

--

I have to admit... I have read all types in these groups! This one is saved
for my books.

--

JANA
_____


wrote in message
news:%osYe.76870$Sj1.60499@okepread04...
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?

Thanks!

Matt Roberds


  #10   Report Post  
zantafio
 
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There has been also tons of lead around water in the water pipes for more
than 2000 years before men rang the bell !




"Mike Berger" a écrit dans le message news:
...
I wouldn't do it. The phosphors are very poisonous, and there's a
lot of lead in the glass.

wrote:
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)





  #11   Report Post  
Tom MacIntyre
 
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Default

On Thu, 22 Sep 2005 06:44:11 GMT, wrote:

Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing.


Get a yard glass...drinking will kill a person well enough without
giving it a "head" start.

Tom

However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups. I've thought of
three ways to deal with this problem.

1. Erosion - put a handful of sand, rocks, or bolts in the tube and
shake it around to abrade the phospors and conductive coating. Then
rinse well.

2. Corrosion - put in a mild acid or other chemical that will dissolve
the unwanted material. Then rinse well.

3. Sealing - pour in some food-safe coating and slosh it around to coat
the entire inside of the glass, covering up the phosphors etc.

I realize that if I want to drink out of the neck, I won't be able to
fill it more than about halfway, so that there will be an air gap above
the beer when I try to drink from it. I guess I could punch out the
anode connector to make an air hole, or just drink from a long straw.
Also I'll have to polish the edges of the neck glass where the base
broke off.

Has anybody tried doing this before? What worked or didn't work? Is
this a bad idea for some reason I haven't thought of?

Thanks!

Matt Roberds


  #12   Report Post  
Do Little2
 
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"zantafio" wrote in message
...
There has been also tons of lead around water in the water pipes for more
than 2000 years before men rang the bell !



True, and adding the CRT's phosphors into the mix,
might just give him that extra little requirement to win
this years Darwin Award for originality !!!


"Mike Berger" a écrit dans le message news:
...
I wouldn't do it. The phosphors are very poisonous, and there's a
lot of lead in the glass.

wrote:
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)




  #13   Report Post  
kip
 
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yep and most died from Lead poisoning.

"zantafio" wrote in message
...
There has been also tons of lead around water in the water pipes for more
than 2000 years before men rang the bell !




"Mike Berger" a écrit dans le message news:
...
I wouldn't do it. The phosphors are very poisonous, and there's a
lot of lead in the glass.

wrote:
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)





  #14   Report Post  
James Sweet
 
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"kip" wrote in message
.. .
yep and most died from Lead poisoning.

"zantafio" wrote in message
...
There has been also tons of lead around water in the water pipes for

more
than 2000 years before men rang the bell !



Wasn't that a contributor to the fall of the Roman empire?


  #15   Report Post  
 
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I heard that somewhere too.



  #16   Report Post  
 
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wrote:
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)

It occurs to me that it might be amusing to make a beer glass out of
this thing. However, I don't think that CRT phosphors and the aquadag
on the inside are part of the four basic food groups.


There is one and only one accepted way, approved by the bdsma
(beer-drinking stupid mo'frs association), to clean the inside of a
monitor:

http://www.25-88.com/clean_your_monitor/brush.swf

  #18   Report Post  
Ken G.
 
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I have heard of alot of strange things in my life but never ever thought
of drinking beer or anything far as that goes out of a broken picture
tube . Why cant you use a glass ?


  #19   Report Post  
kip
 
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"Ken G." wrote in message
...
I have heard of alot of strange things in my life but never ever thought
of drinking beer or anything far as that goes out of a broken picture
tube . Why cant you use a glass ?


Because he is Stupid..



  #20   Report Post  
 
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Glass, bottle, crt.

I'll lap it up off the floor if necessary.



  #21   Report Post  
Franc Zabkar
 
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On Thu, 22 Sep 2005 09:47:25 -0500, Mike Berger put
finger to keyboard and composed:

I wouldn't do it. The phosphors are very poisonous, and there's a
lot of lead in the glass.


Any worse than a pewter mug?

http://www.kelloggscerealcity.com/st...oducts/26.aspx

http://www.lead.org.au/lanv4n3/lanv4n3-19.html

"According to the Medical Journal of Australia, in 1995 an Australian
man and his wife were lead poisoned by drinking non-alcoholic
carbonated beverages from a pewter mug purchased 10 years previously
in Malaysia. [Ref: Scarlett et al, MJA Vol 163 4/18 December 1995 p
589-590]"

wrote:
Hello all!

At work, there was an old computer monitor kicking around without its
casing. It got shoved and moved around until the CRT socket board hit
the table the wrong way and broke off the end of the tube. All of the
metal bits (electron guns, filament, etc) came out with the bit of
glass around the pins, so now I have the circuit boards in the salvage
pile and this funny-shaped glass bottle on my desk. (It still has the
metal band around the front rim.)


-- Franc Zabkar

Please remove one 'i' from my address when replying by email.
  #22   Report Post  
Dana
 
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No that's funny!!

On Thu, 29 Sep 2005, Ken G. wrote:

I have heard of alot of strange things in my life but never ever thought
of drinking beer or anything far as that goes out of a broken picture
tube . Why cant you use a glass ?



  #23   Report Post  
Tom MacIntyre
 
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Default Cleaning the inside of a CRT?

On Sat, 29 Oct 2005 22:28:18 -0400, Dana wrote:

No that's funny!!

On Thu, 29 Sep 2005, Ken G. wrote:

I have heard of alot of strange things in my life but never ever thought
of drinking beer or anything far as that goes out of a broken picture
tube . Why cant you use a glass ?




Kind of reminiscent of the movie "Strange Brew".

Tom
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