Safe CRT Monitor Disassembly
ฝัง
- เผยแพร่เมื่อ 29 ต.ค. 2011
- Tutorial on how to take apart a CRT TV Monitor, how to discharge and ventilate the tube and how to take all the good parts out.
Music by www.LukHash.com
Video License: CC BY-SA 3.0 - วิทยาศาสตร์และเทคโนโลยี
My sister's friend's dad died when he poked around inside an old CRT many years ago. So I say don't take any changes, discharge it first.
how big was the tv? i think bigger crts store more energy
2 things:
1 - "pregnant" capacitors of that size are typically fine. Manufacturers use a plastic or paper disk on the top of some capacitors that tends to deform over time. The underlying surface is typically fine and intact. If you're careful, and use something like a hat pin you can pry off that top cap and see for yourself.
2 - there's nothing safe about working with electronics while wearing a wedding band and/or giant metal watch...
so... be safe, and take care!
The only two things I'd say with this are;
1, Take your rings off before you do this. In the event it's not done correctly, your hand will swell at an alarming rate and you may have to get the ring cut off.
2, Do not put your other hand on the TV when you discharge! I almost died when I saw that. Put your hand in your pocket or behind your back, so if it *does* zap you the charge paths to the floor rather than across your chest.
If it's a thermal problem, you have a very good chance of narrowing it down by opening up the case and using a heatgun/cooling spray on certain parts of the PCB until you can reliably reproduce the error. Be VERY careful not to touch anything in there while it's running. Once you isolated the faulty component (booster capcaitors?) you can turn it off (!), desolder, measure and replace. Fingers crossed!
Thanks for showing me how to vent the tube.
Thanks to you I took apart a TV today safely! Thanks dude! :)
I was about to remove fly back without discharging tq man❤
Very helpful!! Continue with those disassembly !!!
There is a safer way to vent the CRT! Lay face down on firm surface. Wrap carpet over the back of the CRT, leaving a small hole st the socket. Strike the CRT "tipoff" in the center of the socket until you hear hissing sound. Wait until the hissing stops.
If a crack propagates into the funnel of the CRT, flying glass can travel over 30 feet! The carpet cover prevents this & the small targeted hit makes the chance of this happening.
If you scratch the glass around the neck first, that "break" occurs much cleaner. Wrap rag over the neck first, then strike with hammer.
The "tunnel" in the electron guns are electrostatic "lenses" to focus the beams. The pod on the long arm is the "getter" (has chamicals to absorb gasses, to maintain the high vacuum over the life of the tube).
The wire can be unwound from the deflection coils (if it is not potted).
You need to pull out the shadow mask from the CRT. Sit the TV set face up (on boards so you can access it from below). Strike glass first at the neck to start glass breaking, then strike further up to break glass almost up to the front face. The pieces will fall away (have old tarp to catch the broken glass). Lift set off & invert to face-down. You should be able to remove shadow mask by prying loose 3 or 4 arms around the edges. Lift out.
Neat video, very informative.
You left out wire salvage though, such as the degaussing wire bands around the CRT itself. You could get hundreds of feet of small gauge wire just by removing the insulation on the band.
Hey, very useful tutorial johndoe, I was wondering if you might be able to assist me on a matter, my current crt pc monitor, with quite high sentimental value. After turning it on, it works fine for a short limited time. After which I presume is a overheat, the picture then distorts, it gets bigger, darker, as if it loses contrast or brightness. Do you have any idea what part is causing this to happen?
drilling a hole is just fine as long as you don't push too hard and smash the glass, it wouldn't be fun picking shards of glass out of your hand. Others have suggested driving a nail into it which is a lot more dangerous. Safest is the way this guy did it.
now that it is broken I really have no more to worry about except there is glass in side right. So I'll take it out to the lani and take it apart. Also thanks for the info
The screwdriver should have the same potential as the grounding band of the CRT in order to be useful for discharging the tube. Therefore some kind of wire has to connect the grounding band and the discharging tool (e.g. screwdriver). If those two are not properly connected, you won't be able to discharge the tube (and might falsely assume that it's discharged when it actually is not).
Thank you... as I was watching I didn’t see how the ground band was attached to ground because the tv cord wasn’t plugged into anything.... I’ll plug my tv directly into the wet ground before I perform this discharge procedure
I didn’t die 🙂. But I don’t think there was anything to discharge because I didn’t hear any ⚡️ spark
what kinda gloves are you wearing?
In contrast to CFLs, CRTs do not contain a mercury filling. This would have a detrimental effect on the tube: when ionized particles hit the screen, it gives a kind of circle-shaped "shadowy" effect and ultimately ruins the screen's mask. Because of this, earlier CRTs has a specially crafted "ion trap" to catch charged particles before they could hit the screen. All in all, the CRT is kept as "empty" as possible. No danger of mercury here.
I think I have a bigger CRT, which has probably been outside for a few years. I took off the circuit boards. But I'm worried about the mercury inside. Very heavy, so I'd like to take the metal out from inside and make a coffee table. All a tad risky maybe?
i have a broken crt monitor, already dissassebled it, is there any way i can make the leftover tube screen part into a magnifying glass?
I got shocked by a tube, it's not going to kill you, it was a pretty good jolt. Of course you should always play it safe and discharge it, I always discharge it twice. My teacher even touched the high voltage while the set was on, he got hit with 20,000 volts, he jumped around a lot but wasn't hurt.
So don't be afraid of the high voltage but do treat it with respect and be careful.
Voltage isn't as dangerous, it's the amps that are deadly, I think over 6 amps are deadly =)
Funny story tho ^^ As well I agree any electricity should be treated respectfully, electricians can make only 1 mistake.
So +1
***** naw - i can touch a 25 amp 18v drill battery, it's fun cause it tingles a little
***** Actually the amps aren't going to kill you it's the power if you really want to be technical. As you probably know P = V * I^2. Both voltage and current matter just since current is squared it is the bigger concerning factor typically.
Naa... P = V x I = R x I^2
I played the dangerous rout i didnt break the tube to devacum it and i got shocked plus almost got killed by the super cap on the main board
I have fixed a few tvs this way when the color was off a bit and such because nwer tvs don't have external knobs. I just can't remember if screen is the color or if the third one is. The third one is labeled with a 1 on the flyback I have here. Focus is pretty straight foreward, it literally means like in or out of focus like you see.
Every CRT I have looked at had a vacuum plug at approximately 90 degrees opposite the wire plug. Did you see one?
Thanks! I've seen that the PS3 supports those connectors, and it said SCART. Thanks for the info!
thanks..i thing im just gonna buy an old tv and put it on my arcade machine..thanks for your advice, you are pretty cool.
You monster! You killed it T.T...
How long can tube keep charge? In last 2 days I disassembled Sony GDM FW-900, successfully. =) It hadn't been powered for a year or more, so I think it was safe enough.
But I have another one of this for repair. Actually I don't know what particularly is bad, so I want to replace all video PCB with those from first monitor, it had bad CRT - green splashes and then turn OFF.
And the whole video PCB as kinda complete system with hot wire for anode. So, I need to perform all replacement safely.
love flybacks!! great for zvs drivers and 555 timer circuits!!
thumbs up*
Information about the capacitance of CRTs is scarce. However I found an article that talks of 1nF and approx 1kV/inch diameter. This would make 0.18J for a 19" CRT. Compare that to a typical 1uF/2kV microwave capacitor with about 2J (factor 10!). Or against a defibrillator, which start at about 100J. Don't get me wrong: The CRT tube should be properly discharged. However I don't think the shock would kill you -- a jerking motion from the shock that leads to a dropped tool and imploded CRT might.
I could not understand what you said at 1:05 where you connected the discharge tool before touching through to the CRT itself.
I'm planning to use an old CRT Television as a movie prop. What I basically need is the empty shell of the tv, with the screen intact. I need space for a head to fit in it as it is going to be worn as a mask. Do you have any tips for getting out the remaining parts of the infundibular glass left in the casing? And maybe some other tips I should think about before using it on film?
Replace the complete tube with a plastic sheet that has been slumped to a convincing curve by heating in oven in a frame with hole same size as hole in TV case. The faceplate glass of a CRT is thick and made of leaded glass so it is slightly heavier than common soda lime glass (windows, jars) and will cause neck fatigue if you have to wear it as a hat.
See also th-cam.com/video/ZeN2gMM31lE/w-d-xo.html
At 10:38, is the orange stuff copper?
@KLM817 i took apart a tv that my grandpa had from 1988....that was the dirtiest thing i have ever seen, the dust was pitch black and everything was covered in it,
thanx a lot for this, great video
For discharging the tube it isn't necessary to have the grounding rod (i.e. screwdriver in my case) connected to protective earth (PE). As long as the TV is plugged out, you can imagine the CRT as a potential-free capacitor. Since the capacitors leads have no connection to PE themself (TV plugged out), connecting the PE to the grounding rod would have no effect (no current would flow that path).
I don't really understand the question. The tube is evacuated, i.e. there will be vacuum in it (i.e. "nothing"). If you break the tube the rushing noise is not gas rushing *out*, but actually air rushing *in* the tube.
can CRT gone tubes be used as wash basins
Besides the red plug, is there any other parts you can shock yourself? Such as the pcb components?
Yes, the capacitors. But thats with most electronics so as long as you dont touch the capacitors in the tv you should be fine but ALWAYS,ALWAYS discharge the crt. First thing befire messing around with anything. Trust me it can even safe your life.
Yeah the capacitors but only the downside touching it is ok as long if you don't touch the wires that go into the pcb but that's almost impossible
I don't think it's possible because the curvature of a CRT monitor is not really useful for use as a lens. What you might be thinking about is big screen TVs. They work on a very different principle and by design have a huge fresnel lens at the front (which you can use to do some amazingly cool stuff). You can pick up broken big screen TVs relatively cheap (they're very heavy, though). Hope that helps.
I JUST BROKE BY ACCIDENT, THE BULB ON MY CRT MONITOR..WHERE CAN I FIND THE PART TO REPLACE IT?...CAN I USED ANY OLD TV BULB? IT MADE THAT SAME NOISE WHEN IT CRACKED... :( IM SO MAD AT MYSELF..THANKS
Take off the back of the tv, turn it on, Look for the flyback, if you can't find it follow the red wire down from the suction cup (don't touch it) it's attached to what you're looking for. There should be 2 or 3 labeled knobs that you can turn with a screwdriver (focus, screen, etc.). Turn the screen knob only a little and look at the screen. Keep doing this until your picture comes back to normal. You may have to turn it the other direction. You may even have to turn the third one (not focus).
Technology is wonderful. Those 3 electrons holes, RGB!!
Thanks for the help.
Cool video, though how old was that tv? It's pretty clean inside. I would hate to see how much dirt is in my 14 year old Sanyo.
is it dangerous if I unscrew the coil thing at the neck of the tube without getting the vacuum out? I moved it a bit and I heard a bit of cracking, not sure if it was from the glue or from the glass. Also, when the little pcb of the tube touched the terminals, I heard a high pitched noise, something like the "wiiiiiish" that you hear when you turn on anything whith high voltage, for example, when you charge a camera flash but faster. At the moment, the crt was disconnected, obviously
The hiss was you likely letting air into the tube. The crack was likely just a glue bond breaking. Removing the deflection yoke can sometimes be hard as they are usually glued in place so if you have no use for the tube it is safer to work with it when the vacuum has been released.
kinda cool this was the first type of technology used for tvs. Know theirs so many different types
Not exactly, look up Nipkow disks.
en.wikipedia.org/wiki/Nipkow_disk
I want to strip down a huge 40" Sony XBR CRT for an arcade cabinet project, but I am too hormephobic to even want to tackle that set.
Because it's heavy enough (over 300 lbs.) trying to move it as it is, I'd be afraid of trying to move it into the cabinet without any of it's protective covering and accidentally grabbing or touching the wrong thing and getting shocked and knocked down with that huge set coming down on top of me.
And that is all after the fear of the beginning task of just stripping it down, and then accidentally touching any wrong things, as that I've learned those sets have a lot of 'hot' components.
But, this *must* be done...
Bro get a mini fork lift there preaty handy they cost like 200$ to 1000$
so there's no way to get it back to working order if something else inside is broken is there
very interesting!
wouldn't you want to check with a volt meter to make sure there is no charge? seems like a big risk to take to assume.
A typical multimeter is usually rated for 500V insulation or so. The insulation will likely handle a bit more but the instrument will not. Using a suitably rated (expensive) HV probe with suitable meter would be a good thing to do. However if you have a known good jumper wire and make good contact you can be reasonably sure the tube is discharged after you have shorted the HV terminal to the external grounding braid strip (wire).
I'm trying to pull a PCB off but it is very hard to take off and I fear I will break it it won't slide off as displayed in the video pls help
I've never once discharged a crt monitor before pulling the high voltage flyback wire out, and I never had a problem. The flyback itself doesn't hold a charge it's just a transformer. If you're worried about shocks you discharge the capacitors, but if the device was turned off properly and not by a power surge then the capacitors are already discharged as devices with push buttons lose the charge from the capacitors when they turn off as the components still complete the circuit when it's off..
The tube may retain a charge for quite some time, be careful.
What is the function of the plastic sliders between the filament and the coils ?
They were to adjust the colour convergence to make the three electron guns all point to the same place on the screen so the picture would not have coloured fringes. Adjusting them was a manual task that was assisted by suitable coloured test patterns that let you work on one pair of colours at a time.
They are specialised weak magnets with funny pole designs to affect just one of the guns at a time in one direction, kind of.
I have this tv that has been sitting in my garage for 5 years and it's a tv should I still discharge it even thought it hasn't been on for like 5 years should I still discharge it?
Skywtaker Is here Always, just as a precaution. Better to do it and not need to than not do it and get killed because you didn’t
The monitor ground is connected to the other side of the capacitor that is constituted by the tube itself. Why would it need to be connected to anything else? You just need to discharge a capacitor by shorting its leads (one side is monitor ground, the other is the tube connection).
Oh ok im going to look into that. sorry if i was wrong. guess i should have looked it up again before i said anything. thanks
So what happens if tub is broken but all gases and stuff are inside the TV not out side. How long do I need to wait until it is OK to take the rest apart
The charge is lost when the tube is broken as the inside and outside discharge through air and from touching other connected points. I think a few minutes would be enough if the tube is in pieces. Remember to unplug or it may still have the HV supply switched on.
how to backup memory missing sony trinitron KV- A21MF1
when removing the rubber cap from the glass tube, do I need to worry about the vacuum?
I did it with out devacuming it
No, the rubber insulation cap around the HV terminal is to prevent arcing across the outside surface of the tube and accidental contact with the HV terminal. The HV terminal is a bonded metal cap in the tube that is sealed to gas but connects the internal conductive surface (Aquadag) to the HV supply. The idea with discharging the tube is to make contact with the metal under the rubber with the grounded screwdriver before touching it with your hands. Having removed many in my youth I find it easy to remove it without touching the metal bits (just in case even after discharging it or working on a long unpowered CRT) by folding two sides of the rubber up and unclipping first the one side and then the other of the contact on the HV wire.
The vacuum is pumped and sealed into the tube from the evacuation stem that is right in the middle of the small end of the tube protected inside the glued on plastic base with the pins sticking out.
I couldn't see how to ground the screw driver, where did you attach the alligator clip. Maybe you could have put a flash light on that area. I don't get it. Any written explanation would be helpful.
scrapping videos are greatbut what to do with the glass tube? none of the videos show what to do withthem
Lillie Thomas if you have friends who are into knapping, the screen is great for that.
How can I dispose of the glass tube that's left after disassembling it?
Most important is NOT to put it with the household glass recycling as it will cause contamination.
Many countries have recycling centres that accept electronic or hazardous waste and this is the right place. Usually I have read that the service is free of charge for small household quantities. These days (2019) there are already a diminishing number of CRTs being scrapped so some places send them to landfill (where it poses minimal hazard as the leaching process is incredibly slow at the speed the glass disintegrates). Best case scenario is to recover the lead from the glass in suitable facilities and send it to the car starter battery industry so less lead needs to be mined.
Electron gun! Is there a way to remove the electron gun without breaking the tip of the CRT? Those could be used for plasma experiments or to make an electron microscope or maybe even a mini particle accelerator. Sad to see it break
They are removed by cutting the neck with a diamond cutting wheel or scratched and then heated with a red hot wire and the neck snaps off. This was routinely done in the days when tubes were regunned as a new tube was a lot of money. At the end of the CRT era tube production was so high the price of tubes had fallen to where it was no longer economical to manually repair tubes that were made with automated machinery faster than you could repair one.
Watch here how they regun some old tubes.
th-cam.com/video/W3G7b-DcOO4/w-d-xo.html
Fanuc display A61L-0001-0093 .when i power ON the display ,it shows only a YELLOW line .please advice how to troubleshoot. thank you
One of your deflection circuits is faulty. There are places that will repair or you can watch repair videos and hunt down circuit diagrams and service manuals and learn to do it yourself if it is important. There are also companies that sell LCD upgrades for popular CNC control systems to avoid the expense of repairing end of life CRT displays.
in the back of the crt u can ut a screw driver and hit it and the electron gun will remain intact while still venting the tube
YALL DONT UNDERSTAND WHEN I WAS A KID, I WOULD BE TERRIFIED OF THOSE THINGS
umm if i didnt do any of that first, and i cut the wires that im supposed to use to discharge it with, and havent been shocked yet while touching any of it, should i stop now before i get the shit knocked outa me?
and took it more appart than he did half way through the video b4 watching this
it should be fine leave it for a week if you are scared of any charge left behind then work on it
That tv had fm radio, right?
My RCA HAS SOUND .BUT NO PICTURE .WHAT CAN IT BE I TRY EVRYTHING EXCEPT AJUST PICTURE DO TO NO PICTURE ON TV.😢🤔
I heard, "Keep one hand behind your back" just in case. You don't want voltage to go through your chest.
thx man
Cool!!
could you make a video on how to get the monitier part off
the tube? just unscrew it on the 4 corners and then it will come off
I noticed afterward that my language way quite suboptimal :-) This is one thing I'll definitely watch out for in upcoming videos. Annoying as hell, I can hardly watch it myself. Also trying to get rid of saying "gonna" all the time.
The connector you can see at 5:36 is indeed a SCART. Boy I am glad we finally got rid of these. Ridiculously fat cables and connectors that were making trouble so often.
thanks...
Picture tubes operate at very high voltages some where around 20,000 to 25,000 kilo volts
What part can you not touch?
Pratically anything in a crt tv before discharging it
This is going to be tough -- since you didn't write which model it is, I can only give generic advice: Your best bet is to search eBay for the same model or a model with the same CRT. A defective (i.e. vented) CRT is pretty much totalled.
supper & safe
Also, i thought that the inside of the CRT was poisonous and radioactive. Is it dangerous to expose yourself to the inside of the tube like that?
The inside of a tube has a small quantity of light emitting phosphors behind the front face. Some of these powdery compounds are not good for you to eat or rub into broken skin (from when you smashed the glass) but are not going to jump out and attack you.
If you have a very old tube that did not use leaded glass and operated it at a voltage above 25kV it would emit some (small amount) of X-rays mostly from the back but this leaves no residue so poses no risk when switched off.
The getter material (round pie dish shaped thing attached to strip on electron gun assembly at 10:10) is often a Barium compound and is also not good to eat or breath the dust. The silvery black that turns to white deposit that is created with it on the inside of the tube is also not suited for licking but contains very small amounts of getter material.
What if i want to keep the elactron gun intackt ?
Then don't bust up the CRT. Why wreck good technology?
Watch here how they regun some old tubes.
th-cam.com/video/W3G7b-DcOO4/w-d-xo.html
Are you Elon Musk? You sound incredibly like him and the guy manages to find the time to do everything somehow! Thanks for the videos, and Tesla and spaceX etc. And that flamethrower i guess
I was always afraid to take TVs and monitors apart.
Why did you break the tube there’s a lot of gases, lead and phosphorus that can cause implosion and poisoning?
No, there’s nothing inside, it’s a vacoom, meaning it’s completely void of any air nor gasses. It’s sucking air IN, not spitting it out
Is it usually common for the viewing glass of the monitor to be part of the CRT tube? I am hoping some old monitors I have could be opened to get some glass plates for a project. Just wanted to see if it was worth opening some old working monitors to see if I could use the glass.
On very early TVs before the invention of the anti implosion band around the faceplate they made use of a second protective glass in front of the tube proper. These have been removed by those who restore vintage TVs and are attached with some kind of hot melt glue type stuff. On any modern TV the faceplate is part of the vacuum envelope and would have to be cut off with a diamond saw and then cleaned of phosphors in the inside.
See also th-cam.com/video/ZeN2gMM31lE/w-d-xo.html
Take note that your screwdriver did not produce any sparks from the high voltage wire, therefore there was no charge in the tv.
Shouldn't take half a year to remove the anode wire, lol. Tip for you... the 2 wires in there are spring metal. Press against the inside of the crt hole to compress it to easily get the L shaped leg of one of the wires out, and the 2nd one is easy. You can use a screwdriver under the rubber cover, or just grab the top of the rubber cover and slide to the side (after discharging). I hope that helps.
TheCRTman the set was almost dead a capacitor was going to fail on the PCB not too long later
Mine has been unplugged for almost a year so it was fine
is grounding the screwdriver totally necessary? mine has been unplugged for months
trust me i have scrapped 24 CRT tvs in a period of a couple months
I don't understand. You "grounded" it to the tv grounding wire. But that was not plugged in to anything. So really you did not ground it at all?
+FishMB2015 Reference grounding. Basically short circuiting.
+FishMB2015 Capacitor that could jolt you, holds a charge for a while. Put your tongue on it to see if it has a charge...
Please dont do so.. You will die from electric shock.
@FishMB2015 The grounding wire mentioned here is the bare braided tinned copper wire that is strung/wrapped around the back of the tube in contact with the external coating of Aquadag (black graphite paint) and the metal mounting frame parts. The issue is that the glass of the tube forms the dielectric of a capacitor and the HV terminal is connected to the inside coating of Aquadag and screen and between the two sides of the tube glass may be 10 to 25 kV if it has been recently switched on. When you connect the HV terminal to the external ground braid you discharge the capacitor to make it safe.
Unfortunately yes, all crt monitors are attached to what you're calling a tube. (the whole glass part including the monitor is the crt tube).
"T" in "CRT" is already "Tube". Like HI virus, not HIV virus.
what if the tv was tearned off for 7 years
@@SkyGameZZZZ
How can I discharge a TV. What should I do?
Is this a crt tv monitor or a pc monitor
TV
Attaching the croc clip to the earthing strap around the monitors tube is grounding the screwdriver!!!!, as what the monitor itself grounded to??....nothing!!
The charge is stored in the capacitor that is formed by the grass walls of the tube. The external Aquadag is connected to the braised ground strap (wire) and the internal Aquadag is connected to the metal HV feed through contact under the HV wire rubber cap.
Why would you vent it?
It can implode and cause serious damage and even death
@@Sproutpies it’s sad that tubes are being thrown out and used for the metal, I think they should be reused or fixed
Alexandr TV they’re made of glass. There’s no way to fix them, and the best way to reuse them is melt the materials down and use them for something else, I highly recommend you look up a video on how they’re made! It’s intriguing
@@Sproutpies I know how they work an how they are made, I was talking about fixing ones that aren’t vented.
@@AlexandrTVOfficialChannelMost people dont care about fixing them as their is still a not high demand for them despite stuff like retro gaming
You will die if you use an uninsulated screw driver to discharge a charged capacitor. He is using an insulated screwdriver but says uninsulated as he points to the actual metal. Never touch any uninsulated part of a tool to discharge. You gotta use extreme caution when discharging capacitors
"Quick Recap in a safer universe"Extremely Helpful video. but still dangerous and sketchy without proper discharge. The screwdriver shorting it out is acceptable, but not guaranteed. its better to solder a resistor of about 5 to 50 ohms/V somewhere between the alligator clip, and ALWAYS CHECK WITH A MULTIMETER!! (it could save your life keep you alive one more day) , Remember... A charged CRT carries high voltage-about 27,000 volts. so why risk your health also the crt may contain mercury and other nasty chemicals, also trying to open it you risk it imploding as it is a vacuum thus glass would be going everywhere. simply not worth the time and health unless you really need the darn electron gun (doubt it) and you know what your doing with PPE (personal protective equipment).
after proper discharges of large capacitors. Everything else inside is up for grabs though. so have fun and build some cool shit!!
@David Chavez there is no mercury in a CRT they work with a hard vacuum.
There is a tiny bit of mercury in cold cathode fluorescent back-light tubes in some LCD displays (TV, monitors) and more in domestic fluorescent lighting tubes and compact fluorescent bulbs.
Modern LCD bulbs and back lighting and vintage filament bulbs do not contain mercury.
The discharge resistor is required if you want to avoid a spark or limit current when you touch the grounded screwdriver to the HV terminal and is one more thing to go wrong. The amount of charge in a tube is not the same as other high energy capacitors in a powerful switched mode powersupply where the current limiting resistor is good advice, in a CRT the high voltage is the problem, not the large amount stored energy.
It's the lead in the glass if anything to be concerned about. Probably the main bain of the technology.
It probably is possible, but it is not of much use without a really good vacuum and a high voltage source. I can highly recommend you take a look at the channel of bkraz333. He has some spectacular videos where he build himself an electron microscope. Hilariously complicated, however. Brilliant guy!
Why don't you just cut the wire from the fly back transformer to the tube
The possible residual charge is in the tube (connected to that HV wire) and if your cutters are not well insulated you may find it discharges through you when you do the cutting or later when you brush against the end of the cut wire.
dude there is mercury gas in crts and i thought it was in the glass thing you broke with the hammer.
@fantasyshroom there is no mercury in a CRT they work with a hard vacuum, take it easy on the shrooms.
There is a tiny bit of mercury in cold cathode fluorescent back-light tubes in some LCD displays (TV, monitors) and more in domestic fluorescent lighting tubes and compact fluorescent bulbs.
Modern LED bulbs and back lighting and vintage filament bulbs do not contain mercury.
i cut all the wire and hammered that big ass piece connected to the board..it made a pop sound picked it up with gloves, threw it in a box and throwing it out in Tuesday. Fuck it..-_- only protection was gloves.
Don't put your hand on the TV unless you want to get shocked.