What's that black dust in monitors?

[Mark Harriss]

Hey Rod,
Yeah the copiers were were actually new units
and had to have toner added during run up from out of the box
whatever the dust is it's a greasy film on the inside of the
plastics only, so it's a different mechanism to the electrostatic
monitor dust.

 

[Mark Harriss]

Non conductive? Bullshit, considering the main ingredient is Iron oxide,

Hate to disillusion you Bob, but iron oxide is magnetic and non conductive.
Toner has to be non conductive to be electrostatically attracted to the
charged drum and then onto the paper.Canon is the main user of magnetic
toner, almost everone else uses dev and toner combinations.

 

[Harry Conover]

" ** IME it can be one or more of the following:

1. Residue of cigarette smoke collected by the EHT wiring.
2. Photocopier toner dust similarly collected - if a copier is nearby.
3. House dust collected and carbonised by the huge voltage gradients
around the EHT wiring.
Horrible stuff in all cases."


** So you missed this one ???




............. Phil

Whoops Phil...sorry that I missed your post. I stand corrected.

For what it's worth, the worst example of this black crap is what I
encountered during my days as a broadcasting technician servicing
large transmitters. During our weekly maintenance, we would have to
clean this soot from the sockets and cooling fins of the forced air
cooled transmitter tubes. From memory I can tell you that this was not
a fun job, particularly when you're standing inside of the transmitter
and trusting in the interlocks preventing anyone from powering the
thing up while you're hand cleaning the fins of a 50KW transmitter
tube!

I've noticed that some people in this thread simply don't want to
accept the fact that this black crap is simply particulate drawn out
of the air by the presence of electrostatic fields, but that is all it
is. What some of these posters may not realize is that any fine
particulate matter, metalic or inorganic, appears black when
concentrated as particles.

I'm a physicist, so you can trust me on this one!

Harry C.

 

[Rod Speed]

Whoops Phil...sorry that I missed your post. I stand corrected.

For what it's worth, the worst example of this black crap is what I
encountered during my days as a broadcasting technician servicing
large transmitters. During our weekly maintenance, we would have to
clean this soot from the sockets and cooling fins of the forced air
cooled transmitter tubes. From memory I can tell you that this was not
a fun job, particularly when you're standing inside of the transmitter
and trusting in the interlocks preventing anyone from powering the
thing up while you're hand cleaning the fins of a 50KW transmitter
tube!

I've noticed that some people in this thread simply don't want to
accept the fact that this black crap is simply particulate drawn out
of the air by the presence of electrostatic fields, but that is all it is.

Easy to claim. Have fun explaining why it
aint where the airflow is inside a monitor.

What some of these posters may not realize is
that any fine particulate matter, metalic or inorganic,
appears black when concentrated as particles.

Bullshit it does, most obviously with the fine particulate
matter that is attracted to the outer glass surface of the
tube by the electrostatic effect. And with the ESD air 'purifiers'

No reason why it should change color
'when concentrated as particles' anyway.

I'm a physicist,

You'd better return those 'qualifications' then.

so you can trust me on this one!

Fraid not.

 

[DarkMatter]

Then, your lame ass said:

Using fancy words doesnt explain why you dont get a lot
more on the FBT itself than on the inside surface of the case.

I'm sorry if you consider those words to be "fancy", dipshit.

For the rest of us, they are quite definitive of the meaning(s) they
convey.

 

[DarkMatter]

You get it right thru PCs too, basically because the fans move
it thru the PC. In other words they dont need to be charged.

Most monitors are non forced air cooled devices. That is the topic.

Most PCs are forced air devices, and that is an entirely different
subject.

Particulate carried by forced air IMPACTS on surfaces. If said
surfaces have moisture, and or tars from cigarettes on them, then
particulate is going to stick.

 

[DarkMatter]

Dont buy that either. No evidence that PCs used by smokers
fail prematurely. The only exception to that is that the optical
drives can end up with an invisible film on the laser with
smokers and what appears to be a faulty drive will in fact
work fine if you clean the lens with isopropyl alcohol etc.

You're an idiot. That has been established. Proven again here by
virtue of the fact that you actually believe that a coated surface
dissipates heat as fast as an uncoated surface. You are an idiot.

 

[DarkMatter]

True. Usual problem with those that attempt big words.

You're an idiot.

 

[DarkMatter]

Easy to claim. Have fun explaining why it
aint where the airflow is inside a monitor.

Airflow inside a monitor case is convective, dipshit. It is also
electrostatically influenced. If you have ever seen an electrostatic
air moving device, you would know that. Fact is, you probably missed
most of what you saw because you are a retarded **** that only
garnered bits and pieces of electronics in your "training".

You obviously have no clue how corona works, or of its effects.

 

[Rod Speed]

Most monitors are non forced air cooled devices.
Duh.

That is the topic.

Wrong. As always. The topic is what is the black dust in monitors.

Most PCs are forced air devices,
Duh.

and that is an entirely different subject.

Nope, not when they dont have that black stuff in them,
but do have what gets in them from smokers which is
completely different to what's being discussed in monitors.

That black stuff in monitors clearly cant be from smoking.
Its a different color and stinks. The black stuff doesnt.

Particulate carried by forced air IMPACTS on surfaces.

Irrelevant to what the black stuff in monitor is due to.

If said surfaces have moisture, and or tars from
cigarettes on them, then particulate is going to stick.

Dust ends up in PC regardless of moisture and or
tars and is anything like the color of the black stuff in
monitors. So it cant be just dust as some have claimed.

 

[Phil Allison]

"Rod Speed" <[email protected]>

Dust ends up in PC regardless of moisture and or
tars and is anything like the color of the black stuff in
monitors. So it cant be just dust as some have claimed.

** No one claimed it was simply dust.

It is soot - the residue of burnt air borne particles.




............ Phil

 

[Rod Speed]

Some entirely appropriately named pathetic excuse
for a bullshit artist desperately cowering behind

You're an idiot. That has been established.

Even you should be able to bullshit your way out of
your predicament better than that pathetic effort, child.

Proven again here by virtue of the fact that you actually believe that
a coated surface dissipates heat as fast as an uncoated surface.

Never ever said anything even remotely resembling anything like that.

PCs dont generally rely on heat passive
heat dissipation much, so the effect of smoke
or just dust isnt what causes them to fail.

You are an idiot.

You are a fuckwit.

 

[Rod Speed]

Some entirely appropriately named terminal fuckwit desperately cowering behind

Airflow inside a monitor case is convective, dipshit.

Duh, fuckwit.

It is also electrostatically influenced.

Pigs arse it is.

If you have ever seen an electrostatic
air moving device, you would know that.

Taint what moves the air in a monitor.

AND that black stuff is nothing like the
dust that ALSO ends up in the monitor.

Reams of your puerile silly shit any 3 year old
could leave for dead flushed where it belongs.

 

[Phil Allison]

As others have stated, it is airborne particulate matter from
various sources that accumulates.

** That is what I stated:

" ** IME it can be one or more of the following:

1. Residue of cigarette smoke collected by the EHT wiring.
2. Photocopier toner dust similarly collected - if a copier is nearby.
3. House dust collected and carbonised by the huge voltage gradients
around the EHT wiring.
Horrible stuff in all cases.

............. Phil "

it is not *always* burnt stuff.,

** Yes it is.

The voltage HT carbonises it, turning it into soot.





........... Phil

 

[Don Klipstein]

Correct, and you dont get that soot with those.

Its gotta be coming from the FBT, because
its always on the case adjacent to that.

Cant be cooked skin either, but that area where
the you get the soot in a monitor isnt usually
where there is all that much airflow thru the case.

The source has to be the epoxy on the FBT.

I have seen the "sooty" black dust with that "TV-electrical odor" in
fluorescent fixtures in a restaurant. My hypothesis is oxidized and maybe
dark-dirt-coated particles of grease/vegetable-oil/etc., maybe oxidized.
Maybe smoke particles of some kind, which are sometimes greasy/tarry in
nature.
And these sootier appearing particles seem to be attracted to TVs and
some fluorescent fixtures, as opposed to other forms of dust not being so
attracted to high voltage electric things.
I have known black dust to accumulate on TV screen surfaces sometimes,
and larger quantities of this dust when wiped with a paper towel often
have the "black-dust-from-the-inside-of-a-TV" odor.

- Don Klipstein ([email protected])

 

[Rod Speed]

No one claimed it was simply dust.

Obvious lie. Harry did just that.

Pity it aint black in that situation, most obviously
with what certainly ends up on the front glass
surface of the tube and in those ESD air 'purifiers'

It is soot

Soorree, nothing to burn it inside a monitor.

the residue of burnt air borne particles.

Soorree, nothing to burn it inside a monitor.

And you dont get that black soot inside an electrical
heater where there is something to burn the dust.

 

[Rod Speed]

As others have stated, it is airborne particulate
matter from various sources that accumulates.,

Pity that stuff isnt jet black.

it is not *always* burnt stuff.,

Nothing to 'burn' it in a monitor.

it is not *always* toner dust., it *is*
general dust from lots of different places

Yes, you certainly get quite a bit of dust inside any
thing that has significant aiflow thru it, whether that
is fan assisted or just has convection cooling.

BUT IS ISNT JET BLACK, its just dust colored.

and there is not just *one* mechanism
responsible for forming that black crud.

You only see that jet black crud in a monitor adjacent to the FBT.

 

[Rod Speed]

** That is what I stated:

" ** IME it can be one or more of the following:

1. Residue of cigarette smoke collected by the EHT wiring.
2. Photocopier toner dust similarly collected - if a copier is nearby.
3. House dust collected and carbonised by the huge voltage gradients
around the EHT wiring.
Horrible stuff in all cases.

............ Phil "





** Yes it is.

The voltage HT carbonises it, turning it into soot.

Have fun explaining why you dont get that
on the HT lead from the FBT to the tube.

Or with Tesla coils either.

Game, set and match.

 

[Rod Speed]

** That is what I stated:

" ** IME it can be one or more of the following:

1. Residue of cigarette smoke collected by the EHT wiring.
2. Photocopier toner dust similarly collected - if a copier is nearby.
3. House dust collected and carbonised by the huge voltage gradients
around the EHT wiring.
Horrible stuff in all cases.

............ Phil "





** Yes it is.

The voltage HT carbonises it, turning it into soot.

Have fun explaining why you dont get that
on the HT lead from the FBT to the tube.

Or with Tesla coils either.

Game, set and match.

 

[Rod Speed]

As others have stated, it is airborne particulate
matter from various sources that accumulates.,

Pity that stuff isnt jet black.

it is not *always* burnt stuff.,

Nothing to 'burn' it in a monitor.

it is not *always* toner dust., it *is*
general dust from lots of different places

Yes, you certainly get quite a bit of dust inside any
thing that has significant aiflow thru it, whether that
is fan assisted or just has convection cooling.

BUT IS ISNT JET BLACK, its just dust colored.

and there is not just *one* mechanism
responsible for forming that black crud.

You only see that jet black crud in a monitor adjacent to the FBT.