If the bleeder resistor failed or something else is wrong with it, the CRT will not have discharged automatically. Therefore, the discharge procedure is always recommended, bleeder or not. Very good demo.
I have first hand knowledge that this is true, its also true if you don't leave the CRT grounded after discharge it can build a charge back up over time. Best case scenario is it hurts a lot. Also that type of discharge tool was the one Apple used to issue during the early iMac and eMac days....until they realized it wasn't strong enough to actually protect you from shock. They replaced it with one that had a much longer plastic handle and a much thicker metal probe. If you haven't taken and passed a proper CRT safety course then just stay away from CRTs . Same thing goes for working on power supplies.
when taking the anode cap off, you don't just yank it off like that. you apply pressure sideways and dislodge it at an angle. Basically, pushing one side of the clip on the wall of the hole to close the clip together... It should come off smoothly and easily if you're doing it correctly. This is described in service manuals for CRTs
FYI you want to discharge and then wait several seconds and discharge again, otherwise you might get a shock. I've been shocked a few times the real danger is when you jerk your hand away and get cut on something. When I first started repairing sets I was loading a CRT into the car and got shocked, probably would have dropped it but I had asked my dad to help me and he had a good hold on it. I wasn't wearing any eye protection at the time either.
My dad used to own a repair shop back in the 70's and 80's and he told me that one time he was repairing a TV and he put his arm close to the cable and made an arch and shocked him left him a mark on his arm
Safety first!! I always watch this video before discharging a monitor just to make sure I'm still doing everything right. Didn't have any trouble today either though! I've always found it's easiest to remove the anode cap with the discharge tool: when it's lodged underneath, just a slight bit of leverage will make it pop off.
If you happen to read this comment because you're working on your first CRT feel free to shoot me a message if you don't feel entirely confident getting started! Always happy to help out.
@@raccoonofthemoon Hi, it's my first time cleaning a CRT TV inside, I don't have a tool to discharge the Anode, what's the best way to do it with a screwdriver?
@@brunorocca5391 As far as using a screwdriver goes I think your best option is to get a cable with alligator clamp ends and make sure they're good and secure on either side of the connection. It's not a bad idea to wrap a bit of electrical tape over the cable end clamped on to the screwdriver to really be sure you're not accidentally going to knock it loose.
@@raccoonofthemoon hello, first time doing so too. I did wire a flathead screwdriver, to the metal frame, but no heard any sound when moving behind the anode Caps. Am I safe? B/w set
I opened a crt tube when I was 12 yrs old, I got shocked for about 20 seconds while trying to remove that plug looking thing with a normal flat-head screw driver, I felt dizzy after and had to sit down , I believe that is the cause of my loss of long term memory lol luckily I didn't die.
CRT anodes hold massive amounts of potential energy around 55-60kV but don't last long when grounded and discharged. It would either give you a nasty shock at best or kill you at worst, but it'll be over in under a blink of the eye. There is no way for the capacitance charge of the anode to discharge as long as 20 seconds.
Picture can sometimes hold a charge for some time after you unplug the set. Connect the ground clip to that silver strap around the picture tube. Discharge the tube...wait several seconds and discharge it again.
As one of your other personalities? Why yes, yes they did 😊 g'day mate, matie and whatever else you identify as, toaster, child, teacher, sex fiend, Google play card scammer. Btw how's granny, I forwarded 1000 $ to one of the hospitals In America she's in and the one in Africa, shape shifter, obviously 😃
Old message but still relevant question, generally speaking its sets from the 90's and 00's. Sets from 80's and before you should expect there to not be a bleeder circuit, thus you should hear a pop/fizzle when you discharge the tube.
@@highhat5229 when I’m scared I connect a wire to ground and touch the part I think could be dangerous then I take a tester screwdriver and if the neon doesn’t show anything I proceed with no more fear
Don't forget the massive reservoir caps populating the power supply stage. Most modern equipment these days use a switch mode design that starts with rectifying the mains and shoving it into a big meaty CAPACITOR!
I have seen these creep back up in voltage since there is high enough of an ESR that the more distant charges creep to the terminal. Certainly not as high as before, but you could feel it. I've managed to be quite paranoid with these things. Never been shocked.
Attention everyone! Use a chicken stick!!! You all need to be aware of the rise in "regular joes" such as myself and your own selves... attempting to open, discharge and work on CRTs. There is a CRAZE going on in North America regarding RGB modding for classic console gaming (RGB gives the best picture and requies modifications to work on NA TVs). I highly advise you all NOT to do the screw driver trick by hand. Attach it to a non-conductive stick (we call it a chicken stick because we're too chicken to do it by hand). It's a lot safer, you can do it from a distance, HECK you can even put your multimeter on there to make sure it's fully discharged. These tubes have a bad habit of recharging themselves, so you may want to keep poking at the hole with your chicken stick from time to time, just until you've disconnected the board, and again when you're going to reinstall it. Happy modding everyone! Post your vids if you're doing RGB mods!
Was watching a video about modding a tv and they mentioned draining the voltage. Good thing I wasn't stupid and tried to take anything like this apart when I was a kid.
Where can I find a more in-depth explanation of how to disagree a crt with a computer in it? I have an old video game console called a Vectrex which has its own crt built in. I don’t want to risk damaging the circuitry
You should have: 1) just gone ahead and touch the shorting on the inside cup terminal. 2)perhaps (if not to difficult), demonstrated the live 'pop' 3) explained that you weren't totally destroying the cup connection when removing it. The reason for (3) is that I have NEVER...EVER heard that electrical 'pop' when doing the discharge!...well. I guess that has as much value as VCR safety repair tips now. Overall, great video, it was always unclear if the stored charge, wrt ground, was in the huge tube or the cup electrodes
When the CTR has been unplugged (not discharged) for over 2 weeks to a month what are the odds that a CRT still has to be discharged? Would you still recommend trying to discharge the CRT even though it’s been non usable or unplugged turned off for a month?
If the bleed resistor isn't functioning properly, CRTs can hold a charge for years that'll be strong enough to kill you. If you're trying to repair it or get rid of it, I recommend going through this process. If you are NOT confident in your skills, please do not risk it. These can stop your heart very, very quickly.
Yes definitely discharge it, every single time. That 30 seconds of making sure it's discharged will save your life. Even if you step away for a moment, always discharge as first action then move onto repairing or whatever you're doing.
@Choom2077 I always treat my tool in my hand with great admiration and little respect 😉 until friction sets in, then I set the tool down for brief cooling 😎 rock on
Knowing that this is potentially deadly is pretty wild. But I will definitely take note of this. Been considering getting a CRT for awhile for the older consoles, and now that many of these displays are pushing 20 years, repairs must be expected. Tbh though, I think I'd rather pay someone else to do it lol
Thanks for mentioning that most CRTs hav a bleader cap, and are probably discharged anyway, although it's still a goo idea to attempt a discharge anyway. There seems to be a prevailing myth/opinion that opening a CRT is a death trap nowadays. I can only assume this comes from the relative rarity of CRTs and the fact that not much people are working with them now.
I appreciate this video, but I wish you had actually shown how to do it with a screwdriver and some wire - if I had the tool you have I’d probably know what I was doing.
can you link me to that specific tool? i'd love to screw around inside this old imac, turn it into an i7 intel PC :P found some tutorials but i've never had any luck in finding proper discharge tools.
+Twilight Sparkle you don't need that special tool, just use a screwdriver. Hold it by the handle and be careful don't let you hand touch the back of the tube. Discharge the tube 2 times, waiting several seconds between. Anyway
Don't use any old screwdriver. It MUST be insulated with a rubber handle. Don't use any with wood or hard clear plastic handles, the voltage has been known to leak into these types of handles. Wrap a wire around the base of the metal part of the screwdriver and connect to a proper ground. Wear a heavy rubber glove.
Perhaps you couldn't hear the discharge because of your overwhelming urge to yabber-away incessantly during the moment that you were trying to listen for the it? Less craic, hear the crack - just an observation.
Yes, hand behind the back i do, its a good precaution, in case you get zapped and "flyback." Lol. Also its so you dont accidentally touch anything or even receive an arc of lightning from a leaky flyback.
But that dosn't work if you are needing to turn the coil! These are not the death machines people think thay are nowadays, you just need to know what you are doing first and there are still plenty of sources for learning.
Because it has to shoot subatomic particles at five fuck-thousand feet per second in straight lines at the screen and do this completely dozens of times in one second
If the bleeder resistor failed or something else is wrong with it, the CRT will not have discharged automatically. Therefore, the discharge procedure is always recommended, bleeder or not. Very good demo.
well except for ripping the anode cap off like a fcking ape...
I have first hand knowledge that this is true, its also true if you don't leave the CRT grounded after discharge it can build a charge back up over time. Best case scenario is it hurts a lot. Also that type of discharge tool was the one Apple used to issue during the early iMac and eMac days....until they realized it wasn't strong enough to actually protect you from shock. They replaced it with one that had a much longer plastic handle and a much thicker metal probe. If you haven't taken and passed a proper CRT safety course then just stay away from CRTs . Same thing goes for working on power supplies.
when taking the anode cap off, you don't just yank it off like that. you apply pressure sideways and dislodge it at an angle. Basically, pushing one side of the clip on the wall of the hole to close the clip together... It should come off smoothly and easily if you're doing it correctly. This is described in service manuals for CRTs
you can even hear a little "pfft" after the "ah", suggesting he killed it by going at it like a fcking ape
Yeah, that didn't look good for the connector
Must be his first time
Not to send it off for recycle! Why bother?
Tysm that helped!
FYI you want to discharge and then wait several seconds and discharge again, otherwise you might get a shock. I've been shocked a few times the real danger is when you jerk your hand away and get cut on something. When I first started repairing sets I was loading a CRT into the car and got shocked, probably would have dropped it but I had asked my dad to help me and he had a good hold on it. I wasn't wearing any eye protection at the time either.
My dad used to own a repair shop back in the 70's and 80's and he told me that one time he was repairing a TV and he put his arm close to the cable and made an arch and shocked him left him a mark on his arm
Safety first!! I always watch this video before discharging a monitor just to make sure I'm still doing everything right. Didn't have any trouble today either though! I've always found it's easiest to remove the anode cap with the discharge tool: when it's lodged underneath, just a slight bit of leverage will make it pop off.
If you happen to read this comment because you're working on your first CRT feel free to shoot me a message if you don't feel entirely confident getting started! Always happy to help out.
@@raccoonofthemoon Hi, it's my first time cleaning a CRT TV inside, I don't have a tool to discharge the Anode, what's the best way to do it with a screwdriver?
@@brunorocca5391 As far as using a screwdriver goes I think your best option is to get a cable with alligator clamp ends and make sure they're good and secure on either side of the connection. It's not a bad idea to wrap a bit of electrical tape over the cable end clamped on to the screwdriver to really be sure you're not accidentally going to knock it loose.
@@raccoonofthemoon hello, first time doing so too.
I did wire a flathead screwdriver, to the metal frame, but no heard any sound when moving behind the anode Caps. Am I safe?
B/w set
I opened a crt tube when I was 12 yrs old, I got shocked for about 20 seconds while trying to remove that plug looking thing with a normal flat-head screw driver, I felt dizzy after and had to sit down , I believe that is the cause of my loss of long term memory lol luckily I didn't die.
Howard Jones Jr lel
ImaFattyCat bRRRRAAAAP
But you still remembered this.
CRT anodes hold massive amounts of potential energy around 55-60kV but don't last long when grounded and discharged. It would either give you a nasty shock at best or kill you at worst, but it'll be over in under a blink of the eye. There is no way for the capacitance charge of the anode to discharge as long as 20 seconds.
@@floopflarp yeah i am a Electric Engg. And he was making all this Shit up
I like how the guy is instructing you on the procedure but you can tell it is the first time he has ever done it lol
Picture can sometimes hold a charge for some time after you unplug the set. Connect the ground clip to that silver strap around the picture tube. Discharge the tube...wait several seconds and discharge it again.
I wish that he left the clip inside the frame
...Oh and did I mention that the bleed resistor should never be trusted?
nope. Should have said it a bit sooner. I had a profound time when i messed with it.
TC royce ouch
@@tcroyce8128 ouch
As one of your other personalities? Why yes, yes they did 😊 g'day mate, matie and whatever else you identify as, toaster, child, teacher, sex fiend, Google play card scammer. Btw how's granny, I forwarded 1000 $ to one of the hospitals In America she's in and the one in Africa, shape shifter, obviously 😃
How is the chassis grounded if you’ve already unplugged it?
define modernday. like 2005? 2000? 1990?
Modern day is since I was born.
1980s and onward. Vintage = 70s and below.
Old message but still relevant question, generally speaking its sets from the 90's and 00's. Sets from 80's and before you should expect there to not be a bleeder circuit, thus you should hear a pop/fizzle when you discharge the tube.
mikez2 is there a way to tell if it's actually discharged? Like with a multimeter or something?
~I'm a noob
@@highhat5229 when I’m scared I connect a wire to ground and touch the part I think could be dangerous then I take a tester screwdriver and if the neon doesn’t show anything I proceed with no more fear
Don't forget the massive reservoir caps populating the power supply stage. Most modern equipment these days use a switch mode design that starts with rectifying the mains and shoving it into a big meaty CAPACITOR!
In this large Trinitron I just opened there are _two_ 250v caps in the rectifier!
I have seen these creep back up in voltage since there is high enough of an ESR that the more distant charges creep to the terminal. Certainly not as high as before, but you could feel it. I've managed to be quite paranoid with these things. Never been shocked.
The shock feels like a highvoltage stun gun
Attention everyone! Use a chicken stick!!! You all need to be aware of the rise in "regular joes" such as myself and your own selves... attempting to open, discharge and work on CRTs. There is a CRAZE going on in North America regarding RGB modding for classic console gaming (RGB gives the best picture and requies modifications to work on NA TVs). I highly advise you all NOT to do the screw driver trick by hand. Attach it to a non-conductive stick (we call it a chicken stick because we're too chicken to do it by hand). It's a lot safer, you can do it from a distance, HECK you can even put your multimeter on there to make sure it's fully discharged. These tubes have a bad habit of recharging themselves, so you may want to keep poking at the hole with your chicken stick from time to time, just until you've disconnected the board, and again when you're going to reinstall it. Happy modding everyone! Post your vids if you're doing RGB mods!
Before I knew anything about how these work, I was being a dumbass trying to cut the wire that goes up into the tube and I kept on getting shocked.
Has there ever been a case where there's no click while discharging, but the tube still holds a charge? (accidents?)
If you miss the contacts under the rubber insulator you won't discharge and therefore won't hear a click.
Will a chicken stick click 🤔
Or cluck 🤔
Was watching a video about modding a tv and they mentioned draining the voltage. Good thing I wasn't stupid and tried to take anything like this apart when I was a kid.
I was stupid and took one apart as a kid and got a huge fucking shock from this that gave me a stomach ache for hours.
1:41-1:51 When your employer asks you how good you are at what you do.
How do I get that tool?
What's the discharge tool called so I can buy one?
They are high voltage probes, get 'em on amazon or ebay if youre ok with it being generic from china
@@paulsampson6286 jajajajaj
This is pretty useless to someone who really needs information. What is the "specialized tool" called?
1:41 - Is that one of those "CHILD PROOF ANODE CAPS"? Because it appears to be doing it's job. ✔
🤣 yassss be
What's the name of the tool you used?
Bob 🙂👍
Is it OK if I can be on the back of a CRT TV with RF and the composite cables are
Where can I find a more in-depth explanation of how to disagree a crt with a computer in it? I have an old video game console called a Vectrex which has its own crt built in. I don’t want to risk damaging the circuitry
While watching this one, there's a 1 and a half hour video on how to do this.. should I go for it or is this enough O.O?
“Alright thanks for watching”. I get the feeling he filmed this because he believed it could be his last film
I may be working on a set from 2008, so it'll have a bleeder resistor, right? Either way, I'm going to use utmost safety.
You should have:
1) just gone ahead and touch the shorting on the inside cup terminal.
2)perhaps (if not to difficult), demonstrated the live 'pop'
3) explained that you weren't totally destroying the cup connection when removing it.
The reason for (3) is that I have NEVER...EVER heard that electrical 'pop' when doing the discharge!...well. I guess that has as much value as VCR safety repair tips now. Overall, great video, it was always unclear if the stored charge, wrt ground, was in the huge tube or the cup electrodes
I discharged it and it made a giant spark, i'm still scared and i won't do it anymore
That means you did it right
@@lookitskazzy I actually didn't do it right, I used a 1kV rated screwdriver without the ground
@@AlexYaga Wtf? Screwdrivers are rated for electricity?
@@n646n not every screwdriver is, but some of them have special plastic insulation with the rating printed on them
I have 1kV rated ones
@@n646n it has to do with insulation, 1kv is general?
I have a 2003 CRT when I turn it off it makes some cracling noises does it mean it's discharged
Jerry the fcking legend! This video is the best demonstration.
He's fuckin boss aye 🤠
When the CTR has been unplugged (not discharged) for over 2 weeks to a month what are the odds that a CRT still has to be discharged? Would you still recommend trying to discharge the CRT even though it’s been non usable or unplugged turned off for a month?
If the bleed resistor isn't functioning properly, CRTs can hold a charge for years that'll be strong enough to kill you. If you're trying to repair it or get rid of it, I recommend going through this process. If you are NOT confident in your skills, please do not risk it. These can stop your heart very, very quickly.
Yes definitely discharge it, every single time. That 30 seconds of making sure it's discharged will save your life. Even if you step away for a moment, always discharge as first action then move onto repairing or whatever you're doing.
"let me show you how to discharge a crt display... with this custom-made specialized tool i built myself!"
what
That looks like an Apple issued CRT discharge tool to me.
🤣 no, that's clearly a chicken stick from planet antharonia 🫡
@@sgashuh ❤
@@SeriouslyYo he didnt build it gimself
What do you call that tool at 0:32? I can't seem to find that type online...
This video is 12 years old I doubt it's on the market
I imagine if someone has the "specialized crt tv discharging tool" they don't need the tutorial...
they still help regardless. You'd be surprise at what some people will do, even with proper tools in hand. 😅
My dad has a great set of tools, I still needed tutorial. Just sayin, tho it taught me absolutely nothing, yeppers, you nailed it 🙂
@Choom2077 I always treat my tool in my hand with great admiration and little respect 😉 until friction sets in, then I set the tool down for brief cooling 😎 rock on
Knowing that this is potentially deadly is pretty wild. But I will definitely take note of this. Been considering getting a CRT for awhile for the older consoles, and now that many of these displays are pushing 20 years, repairs must be expected. Tbh though, I think I'd rather pay someone else to do it lol
Super simple, great description🎉
Simple dimple ☺️
I took a discharge one time while working on an old tv in a shop . Believe me don't!
Thanks for mentioning that most CRTs hav a bleader cap, and are probably discharged anyway, although it's still a goo idea to attempt a discharge anyway.
There seems to be a prevailing myth/opinion that opening a CRT is a death trap nowadays. I can only assume this comes from the relative rarity of CRTs and the fact that not much people are working with them now.
I appreciate this video, but I wish you had actually shown how to do it with a screwdriver and some wire - if I had the tool you have I’d probably know what I was doing.
What is the name for that probe slipped under cup?
High voltage probe or meter
can you link me to that specific tool? i'd love to screw around inside this old imac, turn it into an i7 intel PC :P found some tutorials but i've never had any luck in finding proper discharge tools.
+Twilight Sparkle you don't need that special tool, just use a screwdriver. Hold it by the handle and be careful don't let you hand touch the back of the tube. Discharge the tube 2 times, waiting several seconds between. Anyway
whats the tool called?
whats the tool called?
Don't use any old screwdriver. It MUST be insulated with a rubber handle. Don't use any with wood or hard clear plastic handles, the voltage has been known to leak into these types of handles. Wrap a wire around the base of the metal part of the screwdriver and connect to a proper ground. Wear a heavy rubber glove.
@@IzludeTingel Which wire suits the best?
Great demo. No bullshit.
1:35 "That SHOULD BE good to go". You need to be an expert 0:01 to do that?
Xd ikr
My tv has been unplugged for months. Would there still be a discharge?
Yes.
I dismantled one of these tv's today, i wacked the crt tube, nothing happened but a bit off hissing
are you still alive
Perhaps you couldn't hear the discharge because of your overwhelming urge to yabber-away incessantly during the moment that you were trying to listen for the it? Less craic, hear the crack - just an observation.
Shots fired
The monitor in the video looks like a Dell M992 or M991.
Bro I didn’t even realize this was micro center
When do I need to discharge the crt monitor?
When they crackle and make noise
Sir ano tawag nung wire n nakaikot supply 220
Do you need to put your hand behind your back
Skywtaker Is here You don't want to touch the metal case when it discharges.
It's a standard practice. If you accidentally get zapped, putting your hand behind your back prevents the electricity from going through your heart.
Yes, hand behind the back i do, its a good precaution, in case you get zapped and "flyback." Lol. Also its so you dont accidentally touch anything or even receive an arc of lightning from a leaky flyback.
ill probably never have to do this but it was interesting lol
Where is order a anode cap
This is the single funniest comment on this whole video.
LOL
My monitor was unplugged for 2 weeks, I still took a wack from it. Never again.
Proceeds to explode heart while ripping the plug off
STEP1: MAKE SURE NOT PLUGGED IN! HAHA
Yuji悠二 solid advice
But that dosn't work if you are needing to turn the coil!
These are not the death machines people think thay are nowadays, you just need to know what you are doing first and there are still plenty of sources for learning.
I can count of one hand how many people i know that got shocked doing this. They would not listen to me.
But how long do they really hold the charger??? A TV-Technican told me after 3 days there is no more energie left....is that true?
Well, for sure this is too late and you just found out by yourself but it can hold energy for months
Cringed at how he pulled off that anode cap.
Can't we just rip the anode cap straight off by pulling the cord?
There's vids showing this. The charge will come out in a stream of arced lightning and attract itself to your skin (you are the closest ground)
@@IzludeTingel thats terrifying😱
Christ these things are terrifying for a TV. Why does a television of all things contain high enough voltage to electrocute someone!?
Because it has to shoot subatomic particles at five fuck-thousand feet per second in straight lines at the screen and do this completely dozens of times in one second
@@danem2215 "fuck-thousand" - yes, I do believe that is the correct technical unit of measurement here. :)
This guy is hilarious!
I am 10y old once I get shock by an fly back
Thabk you
BZZZT!
too scary
wowwwwww niceeeeee