That CRT may not have even held a charge. Plus i looks like you grounded your screwdriver to the chassis and didnt ground the chassis. Theres your problem.
Just pull the final anode off and dump it to chassis. There will only be a small crack then hold your earth tag to the tube anode for the same. Simple 5 second task.
If you touched the metal clip under there, it is discharged. The CRT may not hold a charge, or it may. I have been shocked by these, it is not lethal in almost all cases, it is just a capacitance of about 3nf at whatever voltage it is charged to, which after the EHT supply is turned off drops to only a few thousand volts from 30kv in a few seconds. This will never kill you :-P. Still very unpleasant, though. TIME TO PLAY SOME CALL OF DUTY BLACK OPS
Fortunately it appears that the product is not powered on , if it's take apart day at the local community college then put the anode cap about one inch from tube ground and power it up with the lights off
I worked in warranty TV bench service for many years. I changed many CRT's. Discharging is routine, and nothing like the show seen here! If I worked like that, I'd be out of the TV business in no-time-fast!
As long as the HT leads show no current and the caps are discharged you will be ok... High voltage is dangerous, and will jump that gap you provided with the ground connection.
Remember CHECK THE CAPACITORS! they are the killers not the monitor itself
the tube is 25KV and anyway the current is too low to kill you... yeah it will shock you very badly but you are not going to die ^^ and btw, if you want to discharge it you must first plug the TV on the main line else it isn't really grounded (DONT TOURN IT ON XD)
oooh you know when i used to do this, there were 2 ways. you can wire the screw driver and plug it into a ground socket (3rd hole in your wall sockets) or send the wire into the dirt out the facility window. i'd think that option 2 would kill the moles and worms underground though, heh heh.
It might have already discharged, some monitors have a built in discharge circuitry (ones that the screen flashes bright white when you turn them off, as the tube discharges).
Twenty+ years ago, we discharged tubes with two crossed screwdrivers. One driver held against the conductive aquadag coating, the other *KEPT* pressed the first, then slide its blade under the ultor cap until it touched metal.
Tubes can charge up again if moved about when unwired (from static charges).
crts can hold hold up to 50k volts !! but they won't kill you( unless plugged in with the power on).. Your more likely to die from 120 vac than 220 or 440 because higher voltages will knock you on your ass or just blow an arc through your arm
i had old tv the electric was running down back of tv tube like water hissing took me 5 times to get cap off with bare hands,and a electric fence hurts far more
i discharged a old 80's magnavox TTL/RCA twin input monitor right through me and being a rated voltage at 45KV, it was just a faint shock and didnt even do anything to me. and no, CRT's cannot kill you. its a lot of voltage with hardly any amps. and yes, my monitor was freshly turned off. getting shocked by that is just like pulling the spark plug caps off the coil packs in a running car and then revving up the engine.
New CRT devices will usually hold their charge for a while unless you can run them with a picture and yank out the power cord. Sometimes, that can be enough to use the remaining power. Older CRT devices eventually lose the ability to hold back a huge charge for longer than a few minutes, unless the device is an old TV with a huge, known working metal capacitor connected. That's going back some years!
does anyone know how long would it take for a crt tv to lose its charge by itself because i have that has been unplugged for a little over two months i think.
And how would that happen? The current is passing through the metal part of the screw driver, not his body. He was basically safe throughout this. Also, the voltage isn't high enough to pass current through that handle.
These are the same instructions which are in my CompTia A+ manual, your not doing anything wrong, the instructions have not told you to connect the CRT's chassis to ground. if you stick a screwdriver with a croc clip on the driver and the chassis and then slide it under the plunger, nothing will happen. if you earth the chassis, then you will get a flash and a pop. Also next time you do anything like this, wear some rubber gloves (CRT's hold up to 25,000v, 25KV @10amp (no gloves, u will die!)
You'd be wrong Flash Gordon. CRT's are all abt HT with no power behind it (not necessary). An HT blow from a CRT will not kill you, just hurt, and ow *buzz* *click* give you weird side effects ;-)
You don't need to ground (Earth) the monitor. You are actually shorting the inside of the CRT to the outside. You are not discharging to Earth. Rubber gloves are unnecessary.
CRTs don't hold enough voltage to kill you unless you have a heart defect. The capacitance between the inner and outer aquadag is about .01 MFD, and the charge held, which can be as much as 24,000 volts, is too weak to really hurt you (no more than an ignition system). The reason why you want to discharge the tube is because the jolt can cause you to pull back and be injured, or break the tube. To discharge, short outer aquadag to anode cap and to the pins on the neck.
Uh yeah wrong way to do it there buddy. You take that screw driver and take the back of the CRT screen and touch the Ground and Left of the ground prong and make them touch each other using the screw driver as a link. That's how you do it. Then smash the tube on the inside to ensure that it is discharged. But for precaution still do not touch the suction cup until it is totally disconnected from any electronic device.
once i let out the Vaccum on a Small 5" Crt Black and White Screen....i accidently Cracked the Glass near the Skinny End of the Tube...it just make a Loud Sucking Noise and nothing else happened.
@xan1242 Indeed: you didn't read carefully what I said: I said that 25000 Volt is more normal: the working voltage of a TV is 23,8 or 28,3 (I can't remember which of the two) kV: monitors work on the same voltage....
to discharge the set try connecting two crocodile clips one at each end of some wire, then clip one end to the screwdriver and the other to any earth point on the set or any metal surface. u cant be scared of it....
This is a very bad way to discharge the CRT. The first time he tried, the grounding came off the probe. If he was iin any way grounded, he could have shocked himself and that would have been very bad. Next time use a proper probe.
In order to discharge the CRT you must first run it through basic training-9 weeks. Then it must be deployed at least once and complete a year long mission in between my toes. Then, after 4 years more of reserve duty, my grandmother can shoot her pet aardvark in its nostril.
I did this with an earth wire and rubber gloves, it was very easy. I think ur problem was that the TV was not pulged in so the grounded wire u connected the screw driver to wasn't grounded =P
Wow! This is what is fear? Is better desist from doing so and seek something else to make. So it seems that the monitor will explode to discharge the CRT.
dang, what's everyone so upset about? Any charge on the tube will go away the first time you touch the screwdriver to the annode connection, it may or may not spark. You don't need to spend all day on it. And as mentioned by a few experienced people already, the worst that will normally happen (if the monitor is unplugged) is that you'll get bit, but it generally won't cause any damage...unless maybe you are holding one hand on the chassis, and the other hand on the HV wire.
its true that high amps do kill one at guarantee, but even voltage alone can cause ur heart to stop beating or other severe "malfunction" which can cause immediate death eiter
This video makes me upset obviously u do not know what is going on, its ok. Please understand that it is 25,000 Volts that can be up for potential killing, and also be aware that there is no huge spark or explosion it will merely just make everything neutral, on rare occasions does it actually go spark*
I worked with specialty CRTs for years. As long as the CRT is unplugged, there is absolutely nothing wrong with what they are doing. The CRT will hold a charge once the power is disengaged, but not enough to offer more than an instantaneous shock, no more powerful than your average TV cable will produce. I would understand you being upset with them attempting to do that while the CRT was powered on, but it wasn't. no one would be stupid enough to do that.
When the CRT is not powered on, there is a charge left over. The charge is not constant and cannot kill you. You wouldn't be trying to discharge a CRT when it is powered on, because that is extremely dangerous. When the CRT is not on, it is not necessary to discharge it several times if you want to disconnect the anode cable. You can discharge it once, then take out the anode cable. You don't need your hand behind your back for this.
Yes, you do need one hand behind your back because, as is demonstrated in this video, if the wire were to come loose from your discharging tool, or whatever, if you were to get shocked, keeping one hand behind your back is an added precaution to increase the odds of redirecting the electricity's path from your heart.
The CRT is not powered on. When working with live wires, yes, you do need one hand behind your back. When the CRT is not powered on, while it still holds a charge, if you were to get shocked, it would only be an instantaneous little shock; it would not be constant, and it wouldn't be harmful. It would merely do a good job of waking you up.
@turkycheese you didnt have the screw driver tied to ground, if its not tied to ground, nothing happens, and no common metal isnt ground, i mean like earth ground, or like on a wall socket
just rip the damn thing off!!! I've done that before, and nothing happened [but whatever you do, DO NOT touch the little hole in the tube after you take it off, because I did once, and got the worst shock of my life.]
Well i wasnt looking to rip it off i was looking to touch the screw driver to the two connectors to cause a "huge" spark however as you can see, that didnt happen
Pretty good, however, you need to get a pair of electricians gloves, just in case. These will deflect enough of the charge so that you will live if something terrible happens, it'l just hurt like hell for a lil' bit.
1. The charge in the tube is usually not enough to kill (there are exceptions, however), but it is enough to get your attention in a painful way.
2. Residual charge occurs only if the tube was powered recently; CRTs lose their charge over time so if the monitor wasn't powered on for days, there likely won't be a charge. You should still discharge for safety's sake, though.
3. Usually, you use a resistor in the circuit that discharges the CRT to the DAG ground.
Thank you for the suggestion. I thought the power switch is what allowed the power to pass through to the components. With no power connected, i cant see how this would work
No, It does not work that way. The capcitors in the High Voltage Multiplyer, which is the device at the other end of the anode wire, still conains a charge even after power is removed. This charge can be, and has been in the past strong enough to be leathal. Many shade tree tv repairman have been killed by this.
A lot of CRT's discharge themselves, so when you stick the screwdriver there's no popping/crackling. I discharged an iMac recently and got the same result, but after some googling it turns out the iMac is known to discharge itself.
The voltage in a CRT won't kill. Thats a common misconception true it has up to 30,000 volts but at a very low current. Current kills not voltage.
Given time of inactivity most CRTs discharge to very low voltages. If you really wanted a pop plug the monitor in disconnect it then discharge it.
I personally use a high voltage probe to discharge the CRTs when I'm working on them. The probe has a high resistance which prevents the popping. Rather then shorting out the CRT anode with a screwdriver.
@syphilistic But the capacitor-effect of a CRT is very likely to kill you! Indeed, they could be discharged due to inactivity, but specially due to the capacitance the CRT has, danger is involved, cause peak-current from a discharge can be very high!
all the precautions that you didn't take, such as proper insulate gloves and screw driver, though eye-wear a good idea, will only protect you in the unlikely event of an implosion of the tube... not the potential 30 or so thousand volts of residual charge built up in the crt
You are right, I never thought of those safety precautions and those seem like the most important. It is very important to now what you are getting into and how to prevent danger. I guess i am lucky that nothing happened
Volts do kill. Voltage divided by Resistance = Current(amps). Basically, more voltage to the same resistance = more amps. Those tazers he speaks of aren't exactly good for you. They leave burn marks for a reason.
This was extremely dangerous and I don't recommend for anyone to just go out and try this, these kinds of monitors can hold up to 2,500 volts of electricity which can kill you. It is hard to see but there is a computer book that gave us instructions on how to do this and we made sure to take every precaution necessary to make sure that no one could get hurt.
0:20 i would have shit myself.
AreYouLuckyWoW 1 month ago
HAHAH I KNOW HOW HE FELT I TRIED DOING NEOGEO MONITOTR AND I WAS SHITTING MY PANTS
indydaisy1 2 months ago
That CRT may not have even held a charge. Plus i looks like you grounded your screwdriver to the chassis and didnt ground the chassis. Theres your problem.
canadianman000 3 months ago
The kind of thing i do every day
vidsuhate 4 months ago
I have done this hundreds of times with and without a pop you wont always get them
omgitschrislol 5 months ago
I actualy got 10 kilovolts trough me once in science class with like 0,00000001 nanoamp.
Was nice to see evryone scared thinking I would be fried xD
YouCallitPiracy 7 months ago
fuk dat, get ur hands in there!! its all fun
RADS190 7 months ago
Just pull the final anode off and dump it to chassis. There will only be a small crack then hold your earth tag to the tube anode for the same. Simple 5 second task.
petermines 9 months ago
Smash it.
HaloSpartanG13 9 months ago
there is nothing which must be discharged!
Teslalabor 10 months ago
fucking nab.
hitachi088 11 months ago
If you touched the metal clip under there, it is discharged. The CRT may not hold a charge, or it may. I have been shocked by these, it is not lethal in almost all cases, it is just a capacitance of about 3nf at whatever voltage it is charged to, which after the EHT supply is turned off drops to only a few thousand volts from 30kv in a few seconds. This will never kill you :-P. Still very unpleasant, though. TIME TO PLAY SOME CALL OF DUTY BLACK OPS
triggerhappy77707 1 year ago
its much easier to discharge under the flyback transformer
remzi133 1 year ago
Fortunately it appears that the product is not powered on , if it's take apart day at the local community college then put the anode cap about one inch from tube ground and power it up with the lights off
mikewm9v 1 year ago
fucking noob!!
aishaayre 1 year ago
I worked in warranty TV bench service for many years. I changed many CRT's. Discharging is routine, and nothing like the show seen here! If I worked like that, I'd be out of the TV business in no-time-fast!
jerryg50 1 year ago
dum ass use rubber gloves not eyeglasses!
padugnehot 1 year ago
As long as the HT leads show no current and the caps are discharged you will be ok... High voltage is dangerous, and will jump that gap you provided with the ground connection.
Remember CHECK THE CAPACITORS! they are the killers not the monitor itself
BOBKB3NZX 1 year ago
@BOBKB3NZX The CRT is a has capacitor-like abilities, delivering fatal voltage itself..
IntoxicatedHumans 1 year ago
2,500 volts is what a small monitor has in it. 50,000 volts is what most TV sets have.
kabj06 1 year ago
you can survive a shock over 1000000v its current that kills you it takes only 2milliaps to stop your hart
killernat 1 year ago
your a pussy
PrimalVisionsRadio 1 year ago
the tube is 25KV and anyway the current is too low to kill you... yeah it will shock you very badly but you are not going to die ^^ and btw, if you want to discharge it you must first plug the TV on the main line else it isn't really grounded (DONT TOURN IT ON XD)
castagnola007 1 year ago
LOL he is using his shirt to protect himself from a GROUND wire Hahhaha!
man why are you so scared if it's just gonna discarge going trough the wire....
castagnola007 1 year ago
que pendejo maricon!!!!!!!!!!!!!!!
hyoga6665 1 year ago
oooh you know when i used to do this, there were 2 ways. you can wire the screw driver and plug it into a ground socket (3rd hole in your wall sockets) or send the wire into the dirt out the facility window. i'd think that option 2 would kill the moles and worms underground though, heh heh.
izlude2 1 year ago
It might have already discharged, some monitors have a built in discharge circuitry (ones that the screen flashes bright white when you turn them off, as the tube discharges).
Twenty+ years ago, we discharged tubes with two crossed screwdrivers. One driver held against the conductive aquadag coating, the other *KEPT* pressed the first, then slide its blade under the ultor cap until it touched metal.
Tubes can charge up again if moved about when unwired (from static charges).
CameraTimCom 2 years ago
100$ asses!!
Logan800 2 years ago
Was it even turned on
myman31sbob 2 years ago
i hope not
asdfghjkl2222 2 years ago
Capacitors which are found in monitors hold electricity long after it is unplugged.
kryonic 2 years ago
Que maricon para descargar un simple monitor !
pmscompany 2 years ago
id like to see him use a spot or arc welder
tomek123kotek 2 years ago
Yeah, that's right. You are supposed to have the alligator clip connected to Ground and then discharge the metal contact under the suction cup.
a380rockerfan 2 years ago
Dude he should have gloves on! That wire attached to the screw driver could easily touch his hand!
MajesticMike007 2 years ago
crts can hold hold up to 50k volts !! but they won't kill you( unless plugged in with the power on).. Your more likely to die from 120 vac than 220 or 440 because higher voltages will knock you on your ass or just blow an arc through your arm
bruteforce76 2 years ago
hmmm.... i just cut the cable.... i guess i was lucky:) used the flyback to make a plasma speaker:)
iwar87 2 years ago
i had old tv the electric was running down back of tv tube like water hissing took me 5 times to get cap off with bare hands,and a electric fence hurts far more
kevinstuartfr0st 2 years ago
i discharged a old 80's magnavox TTL/RCA twin input monitor right through me and being a rated voltage at 45KV, it was just a faint shock and didnt even do anything to me. and no, CRT's cannot kill you. its a lot of voltage with hardly any amps. and yes, my monitor was freshly turned off. getting shocked by that is just like pulling the spark plug caps off the coil packs in a running car and then revving up the engine.
hellsmaw84 2 years ago
New CRT devices will usually hold their charge for a while unless you can run them with a picture and yank out the power cord. Sometimes, that can be enough to use the remaining power. Older CRT devices eventually lose the ability to hold back a huge charge for longer than a few minutes, unless the device is an old TV with a huge, known working metal capacitor connected. That's going back some years!
ChaosHusky 2 years ago
does anyone know how long would it take for a crt tv to lose its charge by itself because i have that has been unplugged for a little over two months i think.
Aparsanlal 2 years ago
up to 3 years
WindowsAndMacintosh 2 years ago
Yeah, next time put your unused hand IN YOUR POCKET. Holding your glasses like that is a great way to create an accidental arc through your body.
InsaneDavid 2 years ago
And how would that happen? The current is passing through the metal part of the screw driver, not his body. He was basically safe throughout this. Also, the voltage isn't high enough to pass current through that handle.
Casew2 2 years ago
stick your finger instead
sagadsagad 2 years ago
These are the same instructions which are in my CompTia A+ manual, your not doing anything wrong, the instructions have not told you to connect the CRT's chassis to ground. if you stick a screwdriver with a croc clip on the driver and the chassis and then slide it under the plunger, nothing will happen. if you earth the chassis, then you will get a flash and a pop. Also next time you do anything like this, wear some rubber gloves (CRT's hold up to 25,000v, 25KV @10amp (no gloves, u will die!)
fireball01e 3 years ago
You'd be wrong Flash Gordon. CRT's are all abt HT with no power behind it (not necessary). An HT blow from a CRT will not kill you, just hurt, and ow *buzz* *click* give you weird side effects ;-)
DJGahann 2 years ago
You don't need to ground (Earth) the monitor. You are actually shorting the inside of the CRT to the outside. You are not discharging to Earth. Rubber gloves are unnecessary.
randyfromm 2 years ago
oh, i was hoping it would blow up T.T lol
cheetawolf 3 years ago
CRTs don't hold enough voltage to kill you unless you have a heart defect. The capacitance between the inner and outer aquadag is about .01 MFD, and the charge held, which can be as much as 24,000 volts, is too weak to really hurt you (no more than an ignition system). The reason why you want to discharge the tube is because the jolt can cause you to pull back and be injured, or break the tube. To discharge, short outer aquadag to anode cap and to the pins on the neck.
td1238 3 years ago
haaha good one!
mustangrules 3 years ago
pull the black cap off
crbassassin 3 years ago
and put your cock in it!
TEMPO690 3 years ago
TEMPO690, u are a fag
crbassassin 3 years ago
go make some tea with ur moms tampon :)
TEMPO690 3 years ago
why dont u come over my house and fuck ur sister
crbassassin 3 years ago
ok.......
TEMPO690 3 years ago
my sister is a whore...
TEMPO690 3 years ago
ROFL
ssjgaz 3 years ago
Is that any Relation to a Waffle? Hahah
sweetashonneybaby 3 years ago
cry baby...
Sp33dstix 3 years ago
fudge packer!
TEMPO690 3 years ago
just plug of the cup. It never shocked me and it works.
predator2036 3 years ago
Uh yeah wrong way to do it there buddy. You take that screw driver and take the back of the CRT screen and touch the Ground and Left of the ground prong and make them touch each other using the screw driver as a link. That's how you do it. Then smash the tube on the inside to ensure that it is discharged. But for precaution still do not touch the suction cup until it is totally disconnected from any electronic device.
insanehl 3 years ago
Implode the tube, you are crazy!
fireball01e 3 years ago
once i let out the Vaccum on a Small 5" Crt Black and White Screen....i accidently Cracked the Glass near the Skinny End of the Tube...it just make a Loud Sucking Noise and nothing else happened.
form109 2 years ago 2
Let out the vacuum? Ha ha ha. Didn't you actually let the air in?
randyfromm 2 years ago
yep....thats a better choice of words.
form109 2 years ago
2500 Volts? Hmm. Just ten times too little... 25000 Volts is more normal.
weeardguy 3 years ago 14
@weeardguy no,OVER 9000! Volts is normal
xan1242 1 year ago
@xan1242 Indeed: you didn't read carefully what I said: I said that 25000 Volt is more normal: the working voltage of a TV is 23,8 or 28,3 (I can't remember which of the two) kV: monitors work on the same voltage....
weeardguy 1 year ago
@weeardguy yeah I know,i just said that as a joke.You must know PINGAS and THIS IS SPARTA and OVER 9000! if you are on youtube.
xan1242 1 year ago
@xan1242 To be honest, I have no idea what you are talking about...
weeardguy 1 year ago
Waste of 1 min and 29 seconds of my life
orlylolsup 3 years ago
to discharge the set try connecting two crocodile clips one at each end of some wire, then clip one end to the screwdriver and the other to any earth point on the set or any metal surface. u cant be scared of it....
Thebeatmaster2008 3 years ago
poor boy...
guimbadriver 3 years ago
you dont go trough that without a boom damnit.
rared 3 years ago
A) remove the wire first
B) discharge through a resistor, much better way of doing it
C) use a proper probe
mturgeon2 3 years ago
This is a very bad way to discharge the CRT. The first time he tried, the grounding came off the probe. If he was iin any way grounded, he could have shocked himself and that would have been very bad. Next time use a proper probe.
adcurtin 3 years ago
where was the teacher?
Goldernie 3 years ago
home !!!!
Trusten1984 3 years ago
hey use rubber gloves and pull of the suction cup and touch it, thats what i did but i didnt use gloves... ouch, made me jump
kalebman5000 3 years ago
In order to discharge the CRT you must first run it through basic training-9 weeks. Then it must be deployed at least once and complete a year long mission in between my toes. Then, after 4 years more of reserve duty, my grandmother can shoot her pet aardvark in its nostril.
noeatingallowed 3 years ago
lol noob
huora5000 3 years ago 2
I did this with an earth wire and rubber gloves, it was very easy. I think ur problem was that the TV was not pulged in so the grounded wire u connected the screw driver to wasn't grounded =P
DidntKnowWhatToPut1 3 years ago
Wow! This is what is fear? Is better desist from doing so and seek something else to make. So it seems that the monitor will explode to discharge the CRT.
PY2BBS 3 years ago
pinche miedoso, si así vas a estar mejor dedícate a a otra cosa.
ALPINESR15 3 years ago 2
dang, what's everyone so upset about? Any charge on the tube will go away the first time you touch the screwdriver to the annode connection, it may or may not spark. You don't need to spend all day on it. And as mentioned by a few experienced people already, the worst that will normally happen (if the monitor is unplugged) is that you'll get bit, but it generally won't cause any damage...unless maybe you are holding one hand on the chassis, and the other hand on the HV wire.
jforb427 3 years ago
volts do not kill!!!!!!!!!! amps do, and if you don't know that then you might be screwed when working with high amps!
mannys9130 3 years ago 2
its true that high amps do kill one at guarantee, but even voltage alone can cause ur heart to stop beating or other severe "malfunction" which can cause immediate death eiter
countwolf 3 years ago
Is the capacitor who have the charge in weeks, so don`t it, consider you knew what you work with.
Trusten1984 3 years ago
This video makes me upset obviously u do not know what is going on, its ok. Please understand that it is 25,000 Volts that can be up for potential killing, and also be aware that there is no huge spark or explosion it will merely just make everything neutral, on rare occasions does it actually go spark*
BlkSerialKilla 3 years ago
I worked with specialty CRTs for years. As long as the CRT is unplugged, there is absolutely nothing wrong with what they are doing. The CRT will hold a charge once the power is disengaged, but not enough to offer more than an instantaneous shock, no more powerful than your average TV cable will produce. I would understand you being upset with them attempting to do that while the CRT was powered on, but it wasn't. no one would be stupid enough to do that.
patrickikis 3 years ago 4
He is supposed to keep one arm behind his back or in his pocket so that, if he is electrocuted, the electricity will not go straight to his heart.
keytoothed 3 years ago
When the CRT is not powered on, there is a charge left over. The charge is not constant and cannot kill you. You wouldn't be trying to discharge a CRT when it is powered on, because that is extremely dangerous. When the CRT is not on, it is not necessary to discharge it several times if you want to disconnect the anode cable. You can discharge it once, then take out the anode cable. You don't need your hand behind your back for this.
patrickikis 3 years ago
Yes, you do need one hand behind your back because, as is demonstrated in this video, if the wire were to come loose from your discharging tool, or whatever, if you were to get shocked, keeping one hand behind your back is an added precaution to increase the odds of redirecting the electricity's path from your heart.
keytoothed 3 years ago
The CRT is not powered on. When working with live wires, yes, you do need one hand behind your back. When the CRT is not powered on, while it still holds a charge, if you were to get shocked, it would only be an instantaneous little shock; it would not be constant, and it wouldn't be harmful. It would merely do a good job of waking you up.
patrickikis 3 years ago
where does the screwdriver lead go to? couse i wanna discharge it so I can extract the flyback
OGMO11 4 years ago
Fear can cause one to exercise caution but too much fear can get one hurt from being to jumpy.
sidebander 4 years ago
I can do that in few seconds^^
kathodenstrahl45 4 years ago
u should post a video on how to do it and send it as a response since nobody seems to be able to agree on what is happening
Thanks
Bryan
turkycheese 4 years ago
Whats that u tried to pull out and what does it do?
slaterking1000 3 years ago
@turkycheese theres monitors that hold more then 2,500v! D:!!!! lol
iToasterman 7 months ago
@turkycheese you didnt have the screw driver tied to ground, if its not tied to ground, nothing happens, and no common metal isnt ground, i mean like earth ground, or like on a wall socket
iToasterman 7 months ago
just rip the damn thing off!!! I've done that before, and nothing happened [but whatever you do, DO NOT touch the little hole in the tube after you take it off, because I did once, and got the worst shock of my life.]
wilkes85 4 years ago 2
Well i wasnt looking to rip it off i was looking to touch the screw driver to the two connectors to cause a "huge" spark however as you can see, that didnt happen
turkycheese 4 years ago
your clip has fallen & you didn't get shocked?????
hayabusafmw 4 years ago
Pretty good, however, you need to get a pair of electricians gloves, just in case. These will deflect enough of the charge so that you will live if something terrible happens, it'l just hurt like hell for a lil' bit.
JoTyCole 4 years ago
Is the CRT plugged into the mains? I can see the power cord going into the back.
uucp 4 years ago
That would be the monitor cable that plugs into the motherboard or the video card.
Bryan
turkycheese 4 years ago
For some reason, many monitor makers are too cheap to give you a detachable cable.
bfeely 4 years ago
1. The charge in the tube is usually not enough to kill (there are exceptions, however), but it is enough to get your attention in a painful way.
2. Residual charge occurs only if the tube was powered recently; CRTs lose their charge over time so if the monitor wasn't powered on for days, there likely won't be a charge. You should still discharge for safety's sake, though.
3. Usually, you use a resistor in the circuit that discharges the CRT to the DAG ground.
Watcher3223 4 years ago
Oh come on! Did you end up using your hand to remove the anode cap anyway? I have a few times.
wasssup1990 4 years ago
You might try using a purpose-built insulated screwdriver instead of the one you are using. Google it, there's a lot of people that carry them.
euphonium929 4 years ago
Well Thank you very much for your tip. Ill try that next time I can.
Thanks the comment
Bryan
turkycheese 4 years ago
omg what are you doing there???
only what you are trying to do is damage the CRT!
There is no high danger, put up the fiction with the hands and contact the clipper with a screwdriver, that is connected to the ground!
And don't to as this is a 300kV unit!
xXLastWarriorXx 4 years ago
Im not really to sure I understand what you are trying to say
Thanks for the comment
Bryan
turkycheese 4 years ago
300,000 volts?!
I think you need to take one zero off your numbers as CRTs of this kind usually run within the 20-30 kV range.
As for what is being done, it is discharging the conductive innards of the CRT of any capacitance as that is a consequence of its high operational B+.
Watcher3223 4 years ago 2
best way to discharge is to turn the monitor power switch on with no power connected.
madcows10 4 years ago
Thank you for the suggestion. I thought the power switch is what allowed the power to pass through to the components. With no power connected, i cant see how this would work
Ill give it a try though
Thanks for the comment
Bryan
turkycheese 4 years ago
Don't rely on turning the power off to discharge the anode. the capcitors can still have a charge on them. BE CAREFUL, THIS CAN BE LEATHAL
parab121 4 years ago
No, It does not work that way. The capcitors in the High Voltage Multiplyer, which is the device at the other end of the anode wire, still conains a charge even after power is removed. This charge can be, and has been in the past strong enough to be leathal. Many shade tree tv repairman have been killed by this.
parab121 4 years ago
A lot of CRT's discharge themselves, so when you stick the screwdriver there's no popping/crackling. I discharged an iMac recently and got the same result, but after some googling it turns out the iMac is known to discharge itself.
weirdlookindude 4 years ago
Thank you for telling me that, I have tried numerous CRTs since then and got the same result. I guess this would explain it.
Thanks for the comment
Bryan
turkycheese 4 years ago
you should do more videos then if your better at doing this many would like to see how to properly do it.,!
hayabusafmw 3 years ago
The voltage in a CRT won't kill. Thats a common misconception true it has up to 30,000 volts but at a very low current. Current kills not voltage.
Given time of inactivity most CRTs discharge to very low voltages. If you really wanted a pop plug the monitor in disconnect it then discharge it.
I personally use a high voltage probe to discharge the CRTs when I'm working on them. The probe has a high resistance which prevents the popping. Rather then shorting out the CRT anode with a screwdriver.
syphilistic 4 years ago 3
@syphilistic But the capacitor-effect of a CRT is very likely to kill you! Indeed, they could be discharged due to inactivity, but specially due to the capacitance the CRT has, danger is involved, cause peak-current from a discharge can be very high!
weeardguy 1 year ago
I agree. Don't try this at home
thomasbeasley 4 years ago
Thank you for reinstating this. This is a very important message and i dont suggest to repeat it.
thanks for the comment
Bryan
turkycheese 4 years ago
omg that is kids stuff!!!You will not die if u have a shock from that tube!
spagnolx 4 years ago
Well that could be but i really wouldnt want to try to find out
Bryan
turkycheese 4 years ago
all the precautions that you didn't take, such as proper insulate gloves and screw driver, though eye-wear a good idea, will only protect you in the unlikely event of an implosion of the tube... not the potential 30 or so thousand volts of residual charge built up in the crt
cmagu24 4 years ago
You are right, I never thought of those safety precautions and those seem like the most important. It is very important to now what you are getting into and how to prevent danger. I guess i am lucky that nothing happened
Thanks for the comment
Bryan
turkycheese 4 years ago
You've got the decimal point wrong. CRT monitors use between 20 and 30,000 volts. (30kV).
westernplumber 4 years ago
2500 volts wont kill you....the amps will kill you....they have plently tazers on the market that are 300k and 500k
JoeWhy1 4 years ago
Oh. I always thought it was the volts that killed. Well thank you for informing me.
Bryan
turkycheese 4 years ago
Volts do kill. Voltage divided by Resistance = Current(amps). Basically, more voltage to the same resistance = more amps. Those tazers he speaks of aren't exactly good for you. They leave burn marks for a reason.
shermsdeli 4 years ago
rofl....oops i pulld one of those of with my hand:D>
Gammer1337 4 years ago
ha ha, May not have been a smart thing. I can see though that you are OK and able to type still.
Thanks for the comment
Bryan
turkycheese 4 years ago
that's extremely dangerous
micromega11 4 years ago
This was extremely dangerous and I don't recommend for anyone to just go out and try this, these kinds of monitors can hold up to 2,500 volts of electricity which can kill you. It is hard to see but there is a computer book that gave us instructions on how to do this and we made sure to take every precaution necessary to make sure that no one could get hurt.
Thanks for the comment
Bryan
turkycheese 4 years ago