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Can a CRT monitor explode when operating in the cold?
I work in an unheated garage at an old computer with a ray tube monitor. Every time I lean towards him, I think about the possibility of gouging out my eyes with thick glass fragments in the event of an explosion. It's annoying. Can the kinescope suddenly explode from some kind of temperature expansion / contraction, for example. Is there any reason for concern?
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The operation of any electronics at low temperatures is dangerous primarily due to the formation of condensate (water) on electronic components.
Water is not a very good conductor, but it is pure water, and dust accumulates on electronic components and there can be a lot of things in it that will make water a much better conductor ... Again - on a kinescope - high voltage - there is enough water dust on the surface that there would be a breakdown.
BUT! the tube itself is sealed, you can’t block anything in it with water (it can’t get there), and why the hell should it explode?
Purely theoretically, a high-voltage discharge can create a certain pressure on the glass of the kinescope on the back side of the screen (there the glass is thinner) and purely theoretically it can break this glass (on the back side, where the bell is). But at the same time, the front of the CRT is thick glass, which, even trying to break, is not easy. I remember this from childhood experience - we broke dozens of kinescopes. And so: to break it vlob - it is quite difficult. and even when they beat like that, if something flew off from the blow, and not from the collapse of the CRT muzzle inside.
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i.e. if you will not beat the CRT, nothing should bounce off it. But here is the equipment in an unheated room - it is better to use a special one, otherwise I will "goats" (short circuits) from condensed water.
There is a vacuum in the pipe. If it suddenly explodes (which is unlikely), then the fragments will not fly outward, but cracks will form and the air will be pulled inward. Maximum - it can crack. In general, other electronic components will fail earlier - dampness and temperature variation will do their job.
we shot a CRT from a hunting crossbow with bolts (steel arrows) so it didn’t jerk, but you are worried about expansions
Vlom to read the above comments, the answer is no! There is a vacuum if small parts crack, according to the theory, they will be sucked in)))
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