this is a how to video for replacing the picture tube in your arcade machine. i tried to make this as simple as possible so you can follow along at home
Long time lurker. This video alone made me subscribe. This is probably the most informative video I have ever found to help me expand my tech knowledge. Thanks for doing this.
Awesome video! I would love to see a followup safety video. Specifically, if you are adjusting this tube while it is live, which parts of the yoke are safe to touch without getting shocked? Is there anything other than the annode itself that is dangerous to touch while the tube is plugged in?
I once did a house call on a 35 inch RCA that had started up and then the Xray safety circuit had shut down. I discharged the Anode which went off with a big CRACKLE. Problem was it was likely 50kvolt and while it was discharged to the Dag on the tubes outside ground I believe the tube ground was charged compared to the earth ground. It was a very painfull Zap I caught off it.
Done a handful of tube swap myself, always been lucky and not had to swap the yokes, good to see a video showing how to do the convergence stuff. Did frighten me when I thought it was falling and when you hold it from the neck, lol, I guess you know what you are doing better than me! Thanks, great video.
When the monitor is powered up and you mess with the yoke adjusting it can you run the risk of getting electrocuted? Is it safe and ok to mess about with the yoke when the tube is plugged in?
Thx for the video I'm actually working on the same tv so ty i.domhabe one question which could be a rookie ques.... But I'm swapping it for a mega touch machine will it work
Two questions. 1# Did you ever find out what the name is for the single piece purity ring you were taking about towards the very end of the video? #2. I adjusted my rings as best I could, but when I slid them back to the point where they were not making contact well with the tube the screen was perfect? I would assume I still need them but thought I'd ask.
The tube on my Midway Pacman cabaret is a Wells Gardner 13" K4906. I was recently moving the cab and have necked the tube. The CR23 neck board socket is a 12 pin and wondered what other tube other than a K4906 will work if swapped. Will any K4900 be compatible with this yoke? Does the number on the yoke need to match the number on the tube??? Or is it just trial and error? I found a 14" tube which had the same number of pin outs on the CR23 but the tube was too big for the chassis without bending the chassis to accomodate the tube. If I were to tube swap will my yoke be compatible on another tube or does it have to be the same series of tube like if its a K4900 series then will the only compatible monitir for that yoke need to be either a 4901, 4902, 4903, 4904, 4905, 4906 etc etc for it to work??
I am doing a go7 cbo So if the tube look the same and is the same size But the yoke on the new tv have a resistance of 16 and 2.5 And on the go7 is 55ish and 2.5 I can just switch the two yoke ( put the one of the go7 on the new tube )???
Thanks for showing how to swap the chassis’s yoke onto a new tube. I wish there were more videos showing how to do this, versus using a yoke that was not designed for the chassis. I am planning on doing this, but worried about convergence adjustments. So more videos would help.
Wow you make tube swapping look like a breeze! Aren't you concerned with holding onto the yoke with the monitor on? isn't that a super high voltage area?
Awesome video! I had to laugh when I saw your tube because my G07 has extreme super basketball burn too! Lol. It's in my Monaco GP cockpit and it bugs the hell out of me. I have a ton of 19" tv tubes that I have been collecting for free from people but have always been afraid to try a yoke swap. After your video I think I am ready to give it a shot. Thanks!!!
Will do! I also want to tell you how much I appreciate everything you do for the hobby. Not everyone is so open to share their knowledge like you do. Much appreciated! Thanks.
Just to be clear, you did not use the yoke from the TV, you used the original arcade monitor yoke but the TV's convergence rings? Great video, by the way. You just showed things easily done that many people are warned to never attempt.
Question, I use the discharge method of using the wire with the alligator clip attached to the screwdriver. The t.v. doesn't have a metal frame that arcade cabs use, where should I attach the alligator clip while discharging it?
The metal parts in the corners where the bolts go maybe? I think I have seen someone use the metal wiere thingey running along the tube (not the degauss).
I've gotten this type of swap to work only comparing yoke coils of original with donor and getting pretty close. You think these guys who say you also need to measure inductance in Henries are being too critical? Without an LCR meter, I guess one could build one of those circuits with a resistor of known value and apply a power supply with known frequency and do a couple of calculations to get the Henry value. Do you think this is overkill?
Hey! Great video! Just completed a swap and it looks great but I’m worried about the difference in resistance between yokes: I left the original tv yoke but it had a 10 ohm resistance for the vertical while the arcade yoke had a 12.5. Should I go back and replace it with the arcade yoke? Since it’s already working does that mean it’s fine?
Jason, have you ever tried to convert a high impedance/inductance yoke into a low impedance/ inductance yoke and vice versa? Resoldering or adding/subtracting the coil windings of the yoke to change impedance/inductance to match a chassis?
Very nice video! Save your burnt Tubes. Tubes are going to be harder and harder to find and tubes do die (or get necked) so having a tube with lots of burn is better than no tube at all.
i disagree (for now at least) i see a tv set or 2 every day in the trash on my way to work and 90% of them would be good swap candidates . i do worry about the future
Hi ya my arcade monitor is 20” am I ok to use a 21” tv screen? Am I right in believing we use the existing yolk from the original arcade monitor and use the adjustment ring that’s on the new tube? So the only thing we bring across is the tv tube and adjustment ring
Thank you so much for your video really helpful. thanks to you I replace the picture tube in a collectible Mickey Mouse TV the previous tube was burning out and the red was dying video input was burned into the screen and same for widescreen lines I replaced it with almost the exact same tube from the same company about 10 years older and it looks way better than I ever did The one TV I got from yard sale years ago And the Mickey Mouse collectible TV I dumpster dive find
For what I think what you got, is either Emerson, Sylvania, or Symphonic (Funai) TV/VCR combo from 2000's from the curb. And I didn't know that will work for the Arcades. The Funai Picture Tube is either made in USA, Mexico, or China.
Hi Jason, Great Video. I did a G07 tube swap last year in my Ms Pac. I used a 2002 Samsung TV/VCR combo. I had to swap the yoke as well. I got the convergence and and yoke adjusted awesome outside the cabinet. As soon as I put it in the cabinet the convergence was off and colors went all wonky. Long Story short ended up being that the tube didn't like being at any angle but normal TV orientation. No amount of Deguassing would fix it. It almost seems like the shadow mask moves when tube is rotated from normal TV orientation.. Have tried this with many tvs and they all the ones i have collected seem to do it as well. Have you had any problems like this?
Excellent video! Thank you for taking your time to do this. I have a question.. what would have happened if you didnt swap the yokes? Im just wondering..
the original yoke measurement is 55 ohm and the would be replacement is 14ohm. i did not measure the inductance but it would force the defection circuit to draw approximately 4x more current which would damage the deflection circuit or blow a fuse
i have used many of them while working for an operator i have found that they die after 2-3 years if left on 24-7 all year which is not bad also like other monitors out there once in awhile they will not sync up to specific pcbs
Very informative Video Jason thanks that's allowed my Arcade/CRT knowledge to broaden, however I have always want to know what amount of Electrical current is present on the Yoke coils and what not to touch?
the current and voltage varies per manufacturer design. deflection circuits in raster monitors have 2 voltages aprox 12v-50v and 80v-180v you can touch a live yoke as long as you don't touch the bare terminals you'll be oik
I have an rca monitor in my old baseball arcade. I want to swap with a tv tube. I am getting a reading of 55.0 ohms on the vertical wires on the existing monitor. Is that correct? I never seen that so high before
I just bought a 1976 RCA tube tv from craigslist and I want to use it for my youtube channel where I play games on it. Naturally, a modulator is what I need but I have component wires, the RGB ones. Everyone uses HDMI nowadays but I bought component wires from Retrovision HD and I want to use those. I thought of either modifying the TV just like you did with yours or find any modulator that has component input. I can't find any. So I ordered a converter box that's an AV component to composite. If that doesn't work, then the only way is to modify the tv. I know its possible and so many tell me its not. I can either have it re-wired or replace the unit inside with a different one. I just can't find any technician in my area that can do that. Would you be able to do that? Do you think you can help me with this experiment? Its an analog tv from RCA and I have the schematics... I think. Its on google.
Hey Jason, kind of off topic but maybe you can answer this for me. I’m having a hell of a time finding a replacement 25” crt tube to swap into my Wells Gardner K7193 chassis .... it appears 25” crt’s were light enough to just hall to the dump back in the day so good luck finding one in CRAIGSLIST or Facebook buy and sell 🤦🏼♂️ 27” crts are much more readily available however. Can you marry a 27” tube to a chassis made for a 25” tube? Will this cause any possible damage to the chassis that you know of? Is it even possible due to Horizontal and Vertical yoke impedance marching .... do they even come close enough in ohms to do the swap? Thought I’d ask you before I bring another tube home .... my wife already wants to kill me for all the crt tubes in our garage 😂 Thanks man, Adam
Another fantastic vid Jason. About to undertake a similar project myself. Quick question (and an easy one.for you!)..i need to splice in some wire to extend the length of the wire going from the degausing coil,.to the neck board.... question is... what guage / type wire am i best to use (sorry for such a basic question). Cheers mate!
Very awesome video man. So when you find yourself a cheap/ junk TV that's the same size as your arcade monitor, is the tube socket and Tube degree just kind of luck of the draw?
Great video.. You are the "CRT whisperer!" :-) I've watched other vids, and they make it seem more complex - Never seen anyone suggest that maybe that the magnets would be OK if you leave it alone.. I have done one tube swap, but it was from one arcade monitor to another, so it was a good first try. Your video gives me confidence to do this with a TV if needed! A couple comments/questions: 1: When you lifted that tube out by the neck, I expected it to implode. I always treat those as if they'll break if breathed on too heavily. Is that really a recommended way to carry?! AND.. I dont have any vector games, but I'm always curious WHY the tubes are different on a vector game?? By the time any signals get to the tube, it's all about X/Y deflection no matter what, right?? Why can't a regular tube be hooked to a vector game? Thanks for the great info!
Oh yeah... and, you said your wife did a cap kit on that monitor in 10 minutes?! That's fast.. I haven't done many, but I've done a few, and it'd take me 30-60 minutes if I cared enough to check my work! It's great she has interest in your hobby!!
Hi Jason, awesome video bro 👊🏻 Been following you down in Melbourne Australia. Have you every had to clean a neckboard socket free of gunk in order to fix blurriness in the picture? My WG on my Robotron is a bit blurry and can’t seem to focus it and I’ve done a full cap kit on it. Cheers Mark
Steer clear of the anode cap, the neckboard, and probably the wire lugs on top of the yoke where the wires to the chassis attach and you should be fine. The yoke coils are insulated (though they may get a bit warm), and the purity rings are just magnets, they're not connected to anything electrically. It's best to keep one hand in your pocket (or behind your back, or otherwise well clear of the monitor) and use an isolation transformer even if the chassis doesn't necessarily need it, just to be sure you don't put any dangerous voltages across your heart.
Hi Jason Arcade Nerd here. Can you do this for a color vector monitor. I would like to replace the tube for my Star Wars its a Amplifone it has some burn in. Let me know what you think and thank you.
Nice video. Thank you for sharing! I'm restoring an old 29" trinitron. Do you know a good place do buy convergence strips for corner adjustments? You mentioned it here 30:25
You want to buy them from here www.ebay.com/itm/323314271535?ViewItem=&item=323314271535#vi__app-cvip-panel And you will learn how to apply them here th-cam.com/video/NyGPws6Eu4Y/w-d-xo.html
Hello Jason. In this excellent video you mention that xray radiation shouldn't be an issue if you use the same size tube or larger. What are the chances that a 25 inch Sharp tube would fit the neckboard of a K7191 chassis with a 19" tube? Do I even bother opening up this Sharp TV? Someone told me a tube swap would be easy with either a Sharp or RCA. So I'm kind of splicing your video with that comment from another source. If it doesn't fit then it doesn't fit and I move on but I'm more concerned with the radiation. I don't think a NeoGeo cab conversion is worth radiation poisoning. :P.
sharp rca orion ect all the same for the most part just don't use a sony . yes a 25" tube can be used on a 19" chassis just make sure the yoke you use is the correct yoke or compatable
The magnet cluster on the neck of the tube is your STATIC convergence that is for the center of the picture Tipping the Yoke is your DYNAMIC convergence that is for your 4 corners . 19VJTP22 is not that big of a tube so you shouldn't go to far wrong. Sometimes if your contrast or picture is set too high the shadow mask can overheat and warp slightly enough to form what may look like a green egg on one side of the picture it will go away once it cools off. Keep magnets like in speakers away from the tube face as it will mess up the colour purity. The speakers in the tv itself you may notice have shields around their magnets.
You can't fix the burn in at all? I remember back in the day my mom best friend family had a fairly big TV with a Nintendo on it. A left the Nintendo on for so long that Mario got burned into it. Kinda neat and funny because every time they watch TV you can still see Mario. But I always wondered if it could have been fixed.
thanks for the vid, I am still scared to fix a crt :D Which parts can you touch while adjusting? EG the copper wire on the joke? neckboard, flyback cable, Which parts you should not touch ? I need to fix an sanyo ez 20, well for me its not that ez :)
as long as the power is off and the tube is discharged you can touch anything on a ez 20. but when it is live stay away from the neck board as it has a 400v ish focus and around 90vish grid voltage also the yoke has aprox 100v so if you want to move the yoke while live touch ONLY the plastic parts
Great video, I still find it scary as hell going anywhere near a monitor mind you. Could I swap a 20" tube onto a 19" monitor chassis and yoke for example? Thanks!
That is close I would say Yes. There are two ways to measure size,they both measure diagonally one way is the viewable area the other is the mechanical measurement diagonal. What I found back in the day was a 32 inch had the same gun assembly as a 28 and since it had a greater area to paint with Electrons it had to run more current and either flared a color or aged prematurely. Mitsubishi 35 or RCA35 come to mind. I believe Mitsubishi tried a 40 inch tube it was very heavy the Purity and Convergence were affect by localized magnetic fields and the three color guns were prone to age quickly.
Damn you made that look easy hah. Any advice on a monitor that looks a bit blurry even with maxed out sharpness on the flyback? I am going to cap it, but just wondering if a tube swap may be in order. (K4900 in a Tron)
i would suggest replacing your high voltage caps but those will be in your cap kit anyway . i would recap the chassis first before any tube diagnosis is made
Ok just a quick question. I failed to understand the part about the radiation. Let's say I want to use a 20" tube on a chassis that was in a 27", is it a no-no? Or will I survive with a shot of rad-away?
ok you wanna know the truth lol i probably should't tell people this but.....the amount of radiation from a crt tube is small and not dangerous for a short period of time . but that being said you don't want x-ray radiation blasting you in the face for several hours either. you have PLENTY!!!! of time to adjust your high voltage to a safe level. btw a 20" tube should have around 19.5kv at the anode. also i highly doubt you would get this much exposure but the first sign of radiation sickness is a severe headache
Arcade Jason , I might end up not doing it since my kids also play my arcades and I'd like to avoid them growing a third arm. But thanks for the warning, your help is greatly appreciated!
at www.jmargolin.com/xy/xymon.htm Jed says "above 25KV it starts to produce ionizing radiation, commonly known as x-rays", so I guess HV/tube mismatch isn't detrimental to one's health even in long term if it's under that voltage?
The strap (implosion band) is not under any appreciable tension. It will be under tension on the moment that the screen implodes and the air rushes in.
@@ArcadeJason true and I am. Im planing on building my own cab but never dissembled a tv or seen some one do it to get a crt out other than TH-cam. I have watched plenty of safety videos but sill scared.
Iv been saving and storing19" monitors from the trash. I'm thinking about getting them all hooked up to universal chassis and sell as one unit for people who need a "plug" and play option. May do a "core charge" like they do with auto batteries and pay for the original chassis to restore those aswell.
Arcade Jason no i have an arkanoid and the monitor is dead i just wanna get it working if you have a 19 in for sale i dont care if it has burn in it or anything as long as it works
My mane interest is Vector Arcade machines to which I'm aware have less Current passing through the Monitor Yoke coil but on Rasta Pixel i know its much higher ?
if you ever got shocked from a live yoke coil the odds of a heart attack are nearly zero . most likely it would just scare the shit out of you and possible a small burn
Excellent question I have found that as long as the resistance is close enough the impedance will follow suit. But that's not always the case I have seen some monitors that require a specific ring or impedance from the yoke to even turn on. But most cases it's just a simple resistance test
same as original. many monitors and tvs use the same parts and same yoke voltages so it is very common for 2 different yokes that have the same resistance to also have the same impedance
yes you can use a standard res tube with a medium res chassis and yoke. infact many medium res monitors used std res tube from the factory. but i have a suggestion for you. some early vga monitors use a compatible high res tube which look great on both std and med res chassis
a 100hz tv is just the scan speed the hv would be the same as long as the tube fits and the yoke is close your good to go . although i would stay away from the 100hz crt wide screens of course
you can be sure that the newer CRT will not last anywhere near as long - maybe not as much of problem if the cabinet won't be running long hours - CRT manufacture suffered like everything else in later years (the cheap disposible era)
in my experience newer tubes are no different in longevity and have cleaner pictures. i have done tubes swaps that have run in laundromats 24-7 for several years . i will say this!! stay away from no name chinese tubes
@@ArcadeJason it's the chinese ones I was mainly referring to, though there were some poor ones made in the 80's as well. I had a samsung tv in the 90's that went through 3 CRT's in the space of about 7 years
The convergence also depends on the joke windings shape... and sometime there is magnet strips glued in the joke that match the tube... other times those magnet strips are glued to the tube... so. Things to watch.
Hey jason,heres a request for you..ive a operation wolf in bits..ie control panel..marquee,coin door etc...but the cabinet had massive water damage and couldn't be saved,the seller has kindly posted the pieces from italy..to me..(uk) ive asked everywhere for dimensions online/forums etc with no joy..(alass) could you point me in the right direction .?or you have dimensions for one.sunny uk"))
Would like to clarify... can you touch the yolk without getting zapped. Many new folks are not aware what they can and can’t touch and these monitors scare them.
That's true if the monitor is off but untrue if the monitor is on. For example a wg4600 supplys 140v to one of it's yoke coils and others are much higher
30:28 you really need to make a video about those convertion strips and how to make your own, in some countries like in mine, they are impossible to get and I do not know how to make them. I have seen some videos where they talk about them but NO ONE explains how to make your own when you have 6 monitors that need them, like me, and none of them have the damn strips...
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I love these videos - please keep them coming! I also think it's really cool that your wife gets into this stuff too!
Long time lurker. This video alone made me subscribe. This is probably the most informative video I have ever found to help me expand my tech knowledge. Thanks for doing this.
thanks man if you have any video suggestions let me know
This was an excellent educatuonal video thanks
Dude, I just need to tell you that your videos rock. Thank you for doing this.
Awesome video! I would love to see a followup safety video. Specifically, if you are adjusting this tube while it is live, which parts of the yoke are safe to touch without getting shocked? Is there anything other than the annode itself that is dangerous to touch while the tube is plugged in?
I was going to comment the very same thing. It would be awesome to see a safety video around this kind of tube swap and live power work
I once did a house call on a 35 inch RCA that had started up and then the Xray safety circuit had shut down. I discharged the Anode which went off with a big CRACKLE. Problem was it was likely 50kvolt and while it was discharged to the Dag on the tubes outside ground I believe the tube ground was charged compared to the earth ground. It was a very painfull Zap I caught off it.
Instablaster...
Done a handful of tube swap myself, always been lucky and not had to swap the yokes, good to see a video showing how to do the convergence stuff. Did frighten me when I thought it was falling and when you hold it from the neck, lol, I guess you know what you are doing better than me! Thanks, great video.
When the monitor is powered up and you mess with the yoke adjusting it can you run the risk of getting electrocuted? Is it safe and ok to mess about with the yoke when the tube is plugged in?
This is the best video on the whole internet! Seems so easy, I wonder why I didn't do it earlier!!!
ha ha i do hope this helps remove some of the fear with crts
Thx for the video I'm actually working on the same tv so ty i.domhabe one question which could be a rookie ques.... But I'm swapping it for a mega touch machine will it work
This was really fun to watch, thank you. I want to try one of my 27” candy cabs now
Two questions. 1# Did you ever find out what the name is for the single piece purity ring you were taking about towards the very end of the video?
#2. I adjusted my rings as best I could, but when I slid them back to the point where they were not making contact well with the tube the screen was perfect? I would assume I still need them but thought I'd ask.
Thanks, Jason I think you did a great job of explaining this. Keep up the good work!
thanks Mark there more to this but i wanted to explain it in a way that most people would understand
Nice video concise easy to grasp down to earth delivery. Thanks you've empowered another human being.
I have a single straight line on my monitor. Any suggestions? Is the tube damaged or does it need adjustments?
The tube on my Midway Pacman cabaret is a Wells Gardner 13" K4906.
I was recently moving the cab and have necked the tube.
The CR23 neck board socket is a 12 pin and wondered what other tube other than a K4906 will work if swapped.
Will any K4900 be compatible with this yoke?
Does the number on the yoke need to match the number on the tube??? Or is it just trial and error?
I found a 14" tube which had the same number of pin outs on the CR23 but the tube was too big for the chassis without bending the chassis to accomodate the tube.
If I were to tube swap will my yoke be compatible on another tube or does it have to be the same series of tube like if its a K4900 series then will the only compatible monitir for that yoke need to be either a 4901, 4902, 4903, 4904, 4905, 4906 etc etc for it to work??
I am doing a go7 cbo
So if the tube look the same and is the same size
But the yoke on the new tv have a resistance of 16 and 2.5 And on the go7 is 55ish and 2.5
I can just switch the two yoke ( put the one of the go7 on the new tube )???
Thanks for showing how to swap the chassis’s yoke onto a new tube. I wish there were more videos showing how to do this, versus using a yoke that was not designed for the chassis. I am planning on doing this, but worried about convergence adjustments. So more videos would help.
Wow you make tube swapping look like a breeze! Aren't you concerned with holding onto the yoke with the monitor on? isn't that a super high voltage area?
Awesome video! I had to laugh when I saw your tube because my G07 has extreme super basketball burn too! Lol. It's in my Monaco GP cockpit and it bugs the hell out of me. I have a ton of 19" tv tubes that I have been collecting for free from people but have always been afraid to try a yoke swap. After your video I think I am ready to give it a shot. Thanks!!!
very cool let me know how it goes
Will do! I also want to tell you how much I appreciate everything you do for the hobby. Not everyone is so open to share their knowledge like you do. Much appreciated! Thanks.
Just to be clear, you did not use the yoke from the TV, you used the original arcade monitor yoke but the TV's convergence rings?
Great video, by the way. You just showed things easily done that many people are warned to never attempt.
I agree with you
@@azariayehezkel9064 upgrade to LCD
Question, I use the discharge method of using the wire with the alligator clip attached to the screwdriver. The t.v. doesn't have a metal frame that arcade cabs use, where should I attach the alligator clip while discharging it?
The metal parts in the corners where the bolts go maybe? I think I have seen someone use the metal wiere thingey running along the tube (not the degauss).
I've gotten this type of swap to work only comparing yoke coils of original with donor and getting pretty close. You think these guys who say you also need to measure inductance in Henries are being too critical? Without an LCR meter, I guess one could build one of those circuits with a resistor of known value and apply a power supply with known frequency and do a couple of calculations to get the Henry value. Do you think this is overkill?
Hey! Great video! Just completed a swap and it looks great but I’m worried about the difference in resistance between yokes: I left the original tv yoke but it had a 10 ohm resistance for the vertical while the arcade yoke had a 12.5. Should I go back and replace it with the arcade yoke? Since it’s already working does that mean it’s fine?
is there any danger when inserting convergence strips under the yoke?
For a 19 inch monitor swap how much bigger of a tube/t.v would you recommend going with. If all I have to work with was a bigger tube/t.v.
jASON Does it matter if they are differnt Khz ??? or does size differnce matter ?
Jason, have you ever tried to convert a high impedance/inductance yoke into a low impedance/ inductance yoke and vice versa? Resoldering or adding/subtracting the coil windings of the yoke to change impedance/inductance to match a chassis?
Very nice video! Save your burnt Tubes. Tubes are going to be harder and harder to find and tubes do die (or get necked) so having a tube with lots of burn is better than no tube at all.
i disagree (for now at least) i see a tv set or 2 every day in the trash on my way to work and 90% of them would be good swap candidates . i do worry about the future
Hi ya my arcade monitor is 20” am I ok to use a 21” tv screen? Am I right in believing we use the existing yolk from the original arcade monitor and use the adjustment ring that’s on the new tube? So the only thing we bring across is the tv tube and adjustment ring
Thank you so much for your video really helpful.
thanks to you I replace the picture tube in a collectible Mickey Mouse TV the previous tube was burning out and the red was dying video input was burned into the screen and same for widescreen lines
I replaced it with almost the exact same tube from the same company about 10 years older and it looks way better than I ever did
The one TV I got from yard sale years ago
And the Mickey Mouse collectible TV I dumpster dive find
You da man .... if you could do more tube swap vids I will watch for sure. I like how you explain things.
For what I think what you got, is either Emerson, Sylvania, or Symphonic (Funai) TV/VCR combo from 2000's from the curb. And I didn't know that will work for the Arcades. The Funai Picture Tube is either made in USA, Mexico, or China.
Hi Jason, Great Video. I did a G07 tube swap last year in my Ms Pac. I used a 2002 Samsung TV/VCR combo. I had to swap the yoke as well. I got the convergence and and yoke adjusted awesome outside the cabinet. As soon as I put it in the cabinet the convergence was off and colors went all wonky. Long Story short ended up being that the tube didn't like being at any angle but normal TV orientation. No amount of Deguassing would fix it. It almost seems like the shadow mask moves when tube is rotated from normal TV orientation.. Have tried this with many tvs and they all the ones i have collected seem to do it as well. Have you had any problems like this?
Excellent video! Thank you for taking your time to do this. I have a question.. what would have happened if you didnt swap the yokes? Im just wondering..
the original yoke measurement is 55 ohm and the would be replacement is 14ohm. i did not measure the inductance but it would force the defection circuit to draw approximately 4x more current which would damage the deflection circuit or blow a fuse
Good vid. How do you feel about those universal chassis on FleaBay? Good? Bad?
i have used many of them while working for an operator i have found that they die after 2-3 years if left on 24-7 all year which is not bad also like other monitors out there once in awhile they will not sync up to specific pcbs
Very informative Video Jason thanks that's allowed my Arcade/CRT knowledge to broaden, however I have always want to know what amount of Electrical current is present on the Yoke coils and what not to touch?
the current and voltage varies per manufacturer design. deflection circuits in raster monitors have 2 voltages aprox 12v-50v and 80v-180v you can touch a live yoke as long as you don't touch the bare terminals you'll be oik
Thanks for the video, good luck
I have an rca monitor in my old baseball arcade. I want to swap with a tv tube. I am getting a reading of 55.0 ohms on the vertical wires on the existing monitor. Is that correct? I never seen that so high before
Hi Jason....would love to see a video on how to get the yoke of a tube with a bonded yoke like the rca tubes.. Have you done this Jason?
I just bought a 1976 RCA tube tv from craigslist and I want to use it for my youtube channel where I play games on it. Naturally, a modulator is what I need but I have component wires, the RGB ones. Everyone uses HDMI nowadays but I bought component wires from Retrovision HD and I want to use those. I thought of either modifying the TV just like you did with yours or find any modulator that has component input. I can't find any. So I ordered a converter box that's an AV component to composite. If that doesn't work, then the only way is to modify the tv. I know its possible and so many tell me its not. I can either have it re-wired or replace the unit inside with a different one. I just can't find any technician in my area that can do that. Would you be able to do that? Do you think you can help me with this experiment? Its an analog tv from RCA and I have the schematics... I think. Its on google.
Hey Jason, kind of off topic but maybe you can answer this for me. I’m having a hell of a time finding a replacement 25” crt tube to swap into my Wells Gardner K7193 chassis .... it appears 25” crt’s were light enough to just hall to the dump back in the day so good luck finding one in CRAIGSLIST or Facebook buy and sell 🤦🏼♂️ 27” crts are much more readily available however. Can you marry a 27” tube to a chassis made for a 25” tube? Will this cause any possible damage to the chassis that you know of? Is it even possible due to Horizontal and Vertical yoke impedance marching .... do they even come close enough in ohms to do the swap? Thought I’d ask you before I bring another tube home .... my wife already wants to kill me for all the crt tubes in our garage 😂
Thanks man,
Adam
Another fantastic vid Jason. About to undertake a similar project myself. Quick question (and an easy one.for you!)..i need to splice in some wire to extend the length of the wire going from the degausing coil,.to the neck board.... question is... what guage / type wire am i best to use (sorry for such a basic question). Cheers mate!
anything under 24 gauge is fine
Ha ha ha!! I like the opening!!! "I'm going to show you something"
Very awesome video man. So when you find yourself a cheap/ junk TV that's the same size as your arcade monitor, is the tube socket and Tube degree just kind of luck of the draw?
luck of the draw but the older the tv the more likely it will work
Great video.. You are the "CRT whisperer!" :-) I've watched other vids, and they make it seem more complex - Never seen anyone suggest that maybe that the magnets would be OK if you leave it alone.. I have done one tube swap, but it was from one arcade monitor to another, so it was a good first try. Your video gives me confidence to do this with a TV if needed! A couple comments/questions: 1: When you lifted that tube out by the neck, I expected it to implode. I always treat those as if they'll break if breathed on too heavily. Is that really a recommended way to carry?! AND.. I dont have any vector games, but I'm always curious WHY the tubes are different on a vector game?? By the time any signals get to the tube, it's all about X/Y deflection no matter what, right?? Why can't a regular tube be hooked to a vector game? Thanks for the great info!
Oh yeah... and, you said your wife did a cap kit on that monitor in 10 minutes?! That's fast.. I haven't done many, but I've done a few, and it'd take me 30-60 minutes if I cared enough to check my work! It's great she has interest in your hobby!!
all arcade vector monitors use tubes which were originally designed for use with tv sets i interchange them literally every week
Hi Jason, awesome video bro 👊🏻 Been following you down in Melbourne Australia. Have you every had to clean a neckboard socket free of gunk in order to fix blurriness in the picture? My WG on my Robotron is a bit blurry and can’t seem to focus it and I’ve done a full cap kit on it. Cheers Mark
Did u try the focus on the flyback?
Is there anything one would need to be safety concerned about while adjusting a powered up yoke/rings?
Steer clear of the anode cap, the neckboard, and probably the wire lugs on top of the yoke where the wires to the chassis attach and you should be fine. The yoke coils are insulated (though they may get a bit warm), and the purity rings are just magnets, they're not connected to anything electrically.
It's best to keep one hand in your pocket (or behind your back, or otherwise well clear of the monitor) and use an isolation transformer even if the chassis doesn't necessarily need it, just to be sure you don't put any dangerous voltages across your heart.
Just checking... When you tighten it down I'm assuming you turn it off, then use a metal screwdriver to tighten the rings?
you can but i just tighten it up as is
Hi Jason Arcade Nerd here. Can you do this for a color vector monitor. I would like to replace the tube for my Star Wars its a Amplifone it has some burn in. Let me know what you think and thank you.
yes of course
Nice video. Thank you for sharing! I'm restoring an old 29" trinitron.
Do you know a good place do buy convergence strips for corner adjustments? You mentioned it here 30:25
You want to buy them from here www.ebay.com/itm/323314271535?ViewItem=&item=323314271535#vi__app-cvip-panel
And you will learn how to apply them here th-cam.com/video/NyGPws6Eu4Y/w-d-xo.html
Great video lol at extra hands at 16:37 I have a galaga with centipede burn in and I have a tv I'll give it a try.
let me know how it goes man
Hello Jason. In this excellent video you mention that xray radiation shouldn't be an issue if you use the same size tube or larger. What are the chances that a 25 inch Sharp tube would fit the neckboard of a K7191 chassis with a 19" tube? Do I even bother opening up this Sharp TV? Someone told me a tube swap would be easy with either a Sharp or RCA. So I'm kind of splicing your video with that comment from another source. If it doesn't fit then it doesn't fit and I move on but I'm more concerned with the radiation. I don't think a NeoGeo cab conversion is worth radiation poisoning. :P.
sharp rca orion ect all the same for the most part just don't use a sony . yes a 25" tube can be used on a 19" chassis just make sure the yoke you use is the correct yoke or compatable
@@ArcadeJasonyou da man. I will definitely check that yoke.
Very good. I didn't it was possible to switch yolks.
I have an original killer instinct cab and the tube finally stopped working. Can you point me in the right direction.
The magnet cluster on the neck of the tube is your STATIC convergence that is for the center of the picture
Tipping the Yoke is your DYNAMIC convergence that is for your 4 corners .
19VJTP22 is not that big of a tube so you shouldn't go to far wrong.
Sometimes if your contrast or picture is set too high the shadow mask can overheat and warp slightly enough to form what may look like a green egg on one side of the picture it will go away once it cools off.
Keep magnets like in speakers away from the tube face as it will mess up the colour purity.
The speakers in the tv itself you may notice have shields around their magnets.
that was awesome. thanks for the video! I'm going to give it a try!
Great video Jason !!
Will really come in handy for a lot of people including myself :D
BTW, what did the yoke read on the GO7 ?
i have it memorized for the g07 lol 55 and 2ohm
LOL,
What is acceptable difference between 2 yokes ?
about + or - 20%
Does it matter if you have that extra loop in your flyback / anode cap wire? @19:13
no sir it does not matter it is simply there to tidy up the harness a bit
Great vid Jason! Keep up the good work!
thanks man
Duuuude... Awesome video! Thank you!
great video again, Jason. Thx!!
You can't fix the burn in at all?
I remember back in the day my mom best friend family had a fairly big TV with a Nintendo on it.
A left the Nintendo on for so long that Mario got burned into it.
Kinda neat and funny because every time they watch TV you can still see Mario.
But I always wondered if it could have been fixed.
thanks for the vid, I am still scared to fix a crt :D Which parts can you touch while adjusting? EG the copper wire on the joke? neckboard, flyback cable, Which parts you should not touch ? I need to fix an sanyo ez 20, well for me its not that ez :)
as long as the power is off and the tube is discharged you can touch anything on a ez 20. but when it is live stay away from the neck board as it has a 400v ish focus and around 90vish grid voltage also the yoke has aprox 100v so if you want to move the yoke while live touch ONLY the plastic parts
thanks, I knew most (thanks Johns arcade). But in these repair vids, you hardly hear what not to do, like never to touch the yoke when live etc.
Great video, I still find it scary as hell going anywhere near a monitor mind you. Could I swap a 20" tube onto a 19" monitor chassis and yoke for example? Thanks!
Probably but I would not push my luck much further test run it for a few hours see how hot it gets.
Love these videos. Very educational. Keep it up :)
Can you use a 20" chassis with a 19" tube
From what I got the tube needs to be bigger than the high voltage values. ... ?
That is close I would say Yes. There are two ways to measure size,they both measure diagonally one way is the viewable area the other is the mechanical measurement diagonal. What I found back in the day was a 32 inch had the same gun assembly as a 28 and since it had a greater area to paint with Electrons it had to run more current and either flared a color or aged prematurely. Mitsubishi 35 or RCA35 come to mind. I believe Mitsubishi tried a 40 inch tube it was very heavy the Purity and Convergence were affect by localized magnetic fields and the three color guns were prone to age quickly.
You completely rock. Thank you thank you thank you!!!!
Great help and tips. Thank you!
Damn you made that look easy hah. Any advice on a monitor that looks a bit blurry even with maxed out sharpness on the flyback? I am going to cap it, but just wondering if a tube swap may be in order. (K4900 in a Tron)
i would suggest replacing your high voltage caps but those will be in your cap kit anyway . i would recap the chassis first before any tube diagnosis is made
Will do. Thanks man
Ok just a quick question. I failed to understand the part about the radiation. Let's say I want to use a 20" tube on a chassis that was in a 27", is it a no-no? Or will I survive with a shot of rad-away?
ok you wanna know the truth lol i probably should't tell people this but.....the amount of radiation from a crt tube is small and not dangerous for a short period of time . but that being said you don't want x-ray radiation blasting you in the face for several hours either. you have PLENTY!!!! of time to adjust your high voltage to a safe level. btw a 20" tube should have around 19.5kv at the anode. also i highly doubt you would get this much exposure but the first sign of radiation sickness is a severe headache
Arcade Jason , I might end up not doing it since my kids also play my arcades and I'd like to avoid them growing a third arm. But thanks for the warning, your help is greatly appreciated!
if you have an hv probe there would be zero danger involved but i don't suggest doing it without a probe
at www.jmargolin.com/xy/xymon.htm Jed says "above 25KV it starts to produce ionizing radiation, commonly known as x-rays", so I guess HV/tube mismatch isn't detrimental to one's health even in long term if it's under that voltage?
it depends on tube size 25kv with a 19" will produce x-rays but 25kv on a 32'tube will not
Thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you!!!!
The strap (implosion band) is not under any appreciable tension. It will be under tension on the moment that the screen implodes and the air rushes in.
How safe is it doing this if never done it before and just watching your video?
your only concern is getting shocked as long as you discharge you can not get shocked
@@ArcadeJason true and I am. Im planing on building my own cab but never dissembled a tv or seen some one do it to get a crt out other than TH-cam. I have watched plenty of safety videos but sill scared.
Iv been saving and storing19" monitors from the trash. I'm thinking about getting them all hooked up to universal chassis and sell as one unit for people who need a "plug" and play option. May do a "core charge" like they do with auto batteries and pay for the original chassis to restore those aswell.
another GREAT video !!!
awesome. Keep the vids coming buddy, I could use all the help I can get ha ha
Hey jason do you do repairs on monitors for people like say if i ship you the chassis to get capped and a new flyback?
yes but no lol sometimes i get forced into it lol do you need a specific working chassis
Arcade Jason no i have an arkanoid and the monitor is dead i just wanna get it working if you have a 19 in for sale i dont care if it has burn in it or anything as long as it works
i have a working g07 laying around that was just recapped i really don't want to ship the tube but if you just need a chassis i got one of those
Arcade Jason let me check the monitor amd see what type of monitor it is.
My mane interest is Vector Arcade machines to which I'm aware have less Current passing through the Monitor Yoke coil but on Rasta Pixel i know its much higher ?
if you ever got shocked from a live yoke coil the odds of a heart attack are nearly zero . most likely it would just scare the shit out of you and possible a small burn
Hey Jason, what about yoke impedance? People always talk about checking that to compare the donor yoke with the original yoke.
Excellent question I have found that as long as the resistance is close enough the impedance will follow suit. But that's not always the case I have seen some monitors that require a specific ring or impedance from the yoke to even turn on. But most cases it's just a simple resistance test
Arcade Jason so, should the resistance be the same as the original or can you ignore that?
same as original. many monitors and tvs use the same parts and same yoke voltages so it is very common for 2 different yokes that have the same resistance to also have the same impedance
great info! thanks for doing this
Great vid ! I’ve been waiting for this one. 👾👾Are there types of tubes that have permanent yolk or adjustment rings? Or are they all removable?
Another good question I have seen tubes that have the yoke glued on with epoxy my advice is to stay away from em
Can you take a medium rez chassis, yolk, etc, and swap it into say a go7?
yes you can use a standard res tube with a medium res chassis and yoke. infact many medium res monitors used std res tube from the factory. but i have a suggestion for you. some early vga monitors use a compatible high res tube which look great on both std and med res chassis
what about 100hz TVs, was that refresh rate just a feature of the HV circuitry? no special consideration needed if the tube is otherwise compatible?
a 100hz tv is just the scan speed the hv would be the same as long as the tube fits and the yoke is close your good to go . although i would stay away from the 100hz crt wide screens of course
ok. how are newer vga monitors different by the way? if it's just the socket could that be swapped?
This is great! Thanks man!
You mentioned not downsizing to 14" for radiation... what about upsizing to a 20" tube from a 14" PVM?
thanks for making this video
Thank you so much...
Have you ever done a tube swap where the quality of the picture on the TV tube you used was noticeably lower in quality than the original tube?
nope always better but i only swap bad tubes of course
you gotta put some ass into this screen to break it..best quote yet
Perfect video
Another Jason T Shirt phrase:
"You gotta put some ASS into this screen to break it!"
Ok, so basically, you are saying that I can take a same size tube out of a TV and put my old yolk on the TV tube, and I'm golden ?
you can be sure that the newer CRT will not last anywhere near as long - maybe not as much of problem if the cabinet won't be running long hours - CRT manufacture suffered like everything else in later years (the cheap disposible era)
in my experience newer tubes are no different in longevity and have cleaner pictures. i have done tubes swaps that have run in laundromats 24-7 for several years . i will say this!! stay away from no name chinese tubes
@@ArcadeJason it's the chinese ones I was mainly referring to, though there were some poor ones made in the 80's as well. I had a samsung tv in the 90's that went through 3 CRT's in the space of about 7 years
The convergence also depends on the joke windings shape... and sometime there is magnet strips glued in the joke that match the tube... other times those magnet strips are glued to the tube... so. Things to watch.
Still can't believe you took a super basketball to make a journey!
Hey jason,heres a request for you..ive a operation wolf in bits..ie control panel..marquee,coin door etc...but the cabinet had massive water damage and couldn't be saved,the seller has kindly posted the pieces from italy..to me..(uk) ive asked everywhere for dimensions online/forums etc with no joy..(alass) could you point me in the right direction .?or you have dimensions for one.sunny uk"))
hmmm ill check for op wolfs at work to see if i get get some measurements
aww man!! That would be fantastic!! Your the man jason:)
sorry sunny no op wolves
Would like to clarify... can you touch the yolk without getting zapped. Many new folks are not aware what they can and can’t touch and these monitors scare them.
That's true if the monitor is off but untrue if the monitor is on. For example a wg4600 supplys 140v to one of it's yoke coils and others are much higher
Arcade Jason so don’t touch the copper :)
Agreed
And wear those yellow kitchen gloves when working on these if you are nervous. I do.
lol
Could be a k7000 yoke!
New video! Huzzah!
huzzah! lol
Arcade Jason Still watching. Really enjoying the education.
thanks punk
30:28 you really need to make a video about those convertion strips and how to make your own, in some countries like in mine, they are impossible to get and I do not know how to make them. I have seen some videos where they talk about them but NO ONE explains how to make your own when you have 6 monitors that need them, like me, and none of them have the damn strips...
Sony was the one that used strips the RCA inline tube they gave us strips shaped in a V
16:35 AHHHHHHhhhh surprise creepy third hand!
Tell your wife she is beautiful!! I wish my one got in to my arcade hobby