How to Rejuvenate an arcade CRT monitor [B&K 467]

[@flightfins]

I want to thank you for posting this video! I was putting up with terrible colors on my Paper Boy monitor and saw this and got the courage to try a rejuvenator and bought the same 467. It worked! Monitor like new again! Saved me looking for a super rare medium res and saved my at least $750 even after buying all the parts and the adapter! Thank you!!

[@delsarcade]

Glad it worked out! Rejuvenators are worth their weight in gold!

[@onlyeyeno]

THIS !!! THIS right HERE is why I love KZbin... People like You making and sharing videos like this !! Giving so many people a chance to get experiences, information and "knowledge" that we would never ever had possibility to get any other way. Thank You so much for making and sharing. Best regards.

[@buffett1978]

Just wanted to thank you for the shout out. great video, it was a fun watch. also just so folks know, the adapter is ALL BRAND NEW, nothing is used, socket is even BRAND NEW.

[@delsarcade]

Cool. Glad you approve of the video. Yeah, I was wondering about the socket. It looked too good to be used. And now you've confirmed that it's NEW. Even better!

[@curtislv426]

@@delsarcade great video guys. I've watched buffet's and your's. Did you have to repair your model when you got it off ebay? I'm waiting on a listing of that same model on eBay. Just curious if ya had to do any repairs to it, or send it out to someone or if it worked just fine for ya.

[@delsarcade]

@@curtislv426 No, luckily mine worked perfectly. And it was only $60 shipped. ;-)

[@curtislv426]

@@delsarcade good lord! That's a heck of a deal!

[@delsarcade]

@@curtislv426 That was about 5 years ago.

[@chetpomeroy1399]

The rejuvenation feature of that CRT tester provided excellent results! I've heard that, back in the day, TV repair techs would use these in the field to rejuvenate dying CRT's as a stopgap measure to give them time to order a new CRT, as the effects of the rejuvenation were considered temporary. There's only so much conductive material on the surfaces of those cathodes.

[@soulextracter]

I wonder why they chose to call it rejuvenation if it's "bad for the tube". Based on your comment, they should have called it "Death Rattle"

[@delsarcade]

The term "Rejuvenation" is accurate in my opinion. By definition, Rejuvenation is adding energy and vigor to a dying product. But it's only temporary. However, it does extend the use of an already "unusable" tube. So it does breathe new life into it. On the flip side, the term "Restoration" (which is what I suspect you may be seeking) completely restores the product to factory condition. In this case, CRTs cannot be restored 100%, similar to a light bulb.

[@barrabadgesAust]

Thanks for this video. I was having an issue with an Atari World Rally monitor with no green. I tested the transistors and pots all came up fine. I remembered I had a B&K 467 rejuvenator. It cured the green in one go.

[@delsarcade]

Glad it helped!

[@xx3868]

I have a 467 and it is one of the BEST of the "old" restorers. The 465 was a no timed harsh step restorer wheres the 467 has a "patented" timer that works off the the cathode temp and tells you when to release the button. The 467 is very strong even in the C&B setting and 9/10 times used 1 to 3 times from experience will fix any tube well into the green. I also sacrificed one of the B&W sockets and made a universal connector for any pin crt pin configuration. Only thing to be aware is the "new" crts have very fine close together cathodes and using an old style restorer MAY damage and short them. Having said that, i used it on some modern tvs only using the C&B setting and all times no problems as for those CRTS, C&B is PLENTY so i never needed Rejuv. This vid is great as that last tube had NO indication of output on those colours but the heavy rejuv brought it back to life- something i never needed to do and the instructions suggest to finish with a C&B to settle the output a bit more evenly on the guns after rejuv. Might be why those needles were crazy high at end but shaky. Time and some heat in the crts acts as a very gentle rejuv anyway so leaving the crt on and get it hot can "mild" clean the guns a little, as is turning up the voltage on the tested a bit higher and getting the it hotter can help when testing. Sadly except for analogue oscilloscope and arcade games, the restorer usefulness is going away but great if you have your own crts that need cleaning as i do so its a handy quality instrument that i will keep forever.

[@Bergsy86]

Great Video! Thankyou!

[@delsarcade]

Glad you found it useful! Thanks for watching!

[@ovalwingnut]

Enjoyed this immensely. Thanks for inviting us over for the "how to" 👍😎

[@delsarcade]

Glad you enjoyed it. I tried to spice things up with the multi camera angles. :-)

[@shawncruiksh]

"You just gotta do whatchu gotta do and stick it in", he says.. 🤣 Good video, thanks man!

[@delsarcade]

I need a timecode for that ...

[@shawncruiksh]

@@delsarcade 7:00 😂

[@HD41117]

Really enjoyed seeing these tubes get a new lease of life! Don't worry about the shaky needles, the 467 has at its core a multiplexer running at 20Hz which constantly cycles sequentially through R G and B. This always shows up on the meters at higher readings, due to the value of the smoothing cap across each meter. I guess it was a design choice, providing greater accuracy of reading at low current levels at the expense of some jitter at the top end. B+K really did design some wonderful test equipment.

[@delsarcade]

Glad you enjoyed it. Thanks for great info! My next Livestream will be on re-capping the B&K rejuvenator. Should be fun!

[@HD41117]

@@delsarcade Cool! I'll look forward to that!

[@elysiom_original]

Just wanted to send a thanks and a like for a great video with clear instructions, it was easy to adapt to a B&K 470. I just ran a clean and balance on a K7400 and a clean and balance with a touch of rejuvenate on a K4900 with great results.

[@delsarcade]

Glad it helped. I created it since I hadn't really seen an in depth one done before. The picture in picture make it a bit easier to follow too. Glad you breathed new life into those tubes! [Also, if you ever decide to swap out a tube, I've done videos on those as well. (Arcade monitor repair playlist.)] Enjoy!

[@elysiom_original]

@@delsarcade Ha! Thats what I'm trying to avoid… though I think the K4900 is on its last legs it did some funky things when powering it on for the first time after the rejuvenate but has since settled, maybe a side effect of burning junk off the cathode? Funky things as in red screen flashing with retrace lines, it's had a hard life can tell its been in many machines from the burn in.

[@delsarcade]

Could be some shorts developed with the rejuve. There should be a "remove short" button that can remove them safely. Also, it helps to have the font of the tube facing down during the rejuve. That way anything knocked off the guns will fall away from them, reducing the shorts.

[@elysiom_original]

@@delsarcade That’s good info, I’ll give that a shot if it starts becoming a problem.

[@filter4now]

Yeah, I wonder about the green gun too, why its pegged. A new in box CRT wouldn't peg like that. It also shows shorts, something funky but it DOES work. If it Jacks up though I'd check your green drive circuit (may be somewhat shorted, over taxing the green drive)

[@BrandonHann]

You can adjust that top curve with the H-Hold pot on the chassis.

[@Megalocade]

Because of this video I've been searching for this Rejuvenator, I've now managed to get this exact model here in the uk, trust me when i say its like gold dust here lol 😁 but loving it and it's in mint condition with only 1 adapter missing, I've owned a 470 for a while but like the 3 meters on this model, tells you instantly if you have shorts etc, its just a better Rejuvenator all round because you have a lot more sittings.

[@delsarcade]

Good to hear that! I love mine. I'm getting ready to install a cap kit on it so it will last for years to come. Glad you enjoyed the video. :-)

[@mnretrogamer7189]

After research this worked! THANK YOU!!!

[@Pulverrostmannen]

Old games simply looks better on real CRT monitors, the sad part about this is that these screens just gonna me more and more rare until they finally dies of old age and all that other stuff so getting some more life out of a dead tube is in the end probably the only thing we can do in the end. I got my 28" CRT in the living room along with my old gaming consoles and I hope it just won´t die on me anytime soon. in RGB with my Sega master system 2 for example the picture is mindblowing good. it´s crazy how good it could had been if i knew this stuff was possible even when I played this stuff in the 90s too, but then I would likely not do anything good modding my consoles anyway lol

[@delsarcade]

I agree! CRT or GTFO... LOL! But seriously, I'm already hoarding TV tubes and purchasing Flybacks to keep them going for at least 40 more years. ;-)

[@Pulverrostmannen]

@@delsarcade absolutely. I actually have a goal to make a 50s tube powered CRT work good enough to play Nintendo with. But that one gonna need some serious care and I don’t even know if the crt is good yet. I have a Lafayette 99-5018 CRT Rejuvenator but no documentation for it whatsoever so I have to find a way to figure this one out before I connect it to a tv. But I can’t find anything for this you can just download for free

[@Megalocade]

@@delsarcade lol 😁 yup i quite agree me too, i have enough cr23s and 31s from 19" up 28" tubes to last the rest of my life i keep the tubes only and take the rest of the tv plastic frames to the recycling centre i also gut the tv chassis of all its parts too and box them...believe me these parts come in handy, case in point my k7000 19" needed a new width coil which are had to find now with the ferrite shield on, a compatible one from a tv i gutted some time ago worked a treat, tubes dont take up much space and eaiser for me to shelf in boxes, i run each one for 30mins a year to keep the guns up together because if you leave them unpowered for years they become weak and blurry, my sf2 cabs will never see lcds for as long as I'm the owner.

[@Abh_92]

Thanks for the useful vid! Really cool tool to have!

[@delsarcade]

Glad you found it useful! I agree, it's a great tool to have!

[@rogerama920]

Great tutorial. I’ve got to get one of those. What a valuable tool.

[@delsarcade]

Now that I have it I can't live without it. I've rejuvenated many monitors and make the rounds at my friends' game rooms.

[@rogerama920]

I ordered one on eBay today. Can't wait to try it out.

[@delsarcade]

Nice! Let me know how it goes. Also, make sure you have the CR-23 and CR-31 adapters. Those are the most common tube sizes. If you don't have them Arcade Buffet has them.

[@andersgunnarsson2489]

This was a really fantastic video, thank you! May I ask, I have been unable to figure out how to connect the G2 pins (red, green, blue) from the tester when having a ”combined” G2 on the tube. Would you happen to know how to do that? Thanks again for a great video!

[@delsarcade]

I don't know how to connect that config. However, try joining the FB group B&K rejuvenators. They should be able to help you.

[@MartinAlejandroLiguori]

This video is just AWESOME.

[@tootyuk]

Amazing that it can bring them back to life!

[@philexile2954]

Well, it's not that easy unfortunately. The rejuv process is destructive and your mileage may vary. You can also kill a tube this way. I would actually leave these two monitors on for a few days to see if they truly survived the process. The Sencore CR7000 manuals actually specific mentions that the rejuv process on an arcade tube won't usually yield the best results.That said - it's really the only option for a dying, dark tube!

[@delsarcade]

The Outrun is rock solid. So it worked great. And you'll need to see what happens with Rolling Thunder's in Friday's episode. ;-)

[@philexile2954]

@@delsarcade That's great! I actually shared this with a guy who used to work for B&K doing demonstrations of the 467 for TV repair guys. He said this brought back some memories. One suggestion: take a peak in the manual and it'll tell you when you click over to restore you should wait for a good 30-60 seconds before running a C&B or rejuv.

[@aitoliko10]

Amazing video thank you very much for it

[@delsarcade]

Glad you enjoyed it and found it useful. :-)

[@riggel8804]

I've got a couple of rare CRTs that I want to rejuvenate and I got a tech willing to do it for me. Problem is that the Tubular website doesn't have my CRTs in their data base. Can anyone give any advice on how I cut find the right voltage and g cut settings for my tubes? Maybe it is in the service manual? The tubes come from a KV-35xbr48 Sony consumer Trinitron and a BVM1911 broadcast monitor. I don't have the actual tube part numbers on hand but I can find them if need be. Any help much appreciated. Thanks.

[@delsarcade]

Not sure about those. Your best bet is to post that question on a CRT forum or arcade forum (KLOV forums is a good one). Those guys really know their stuff.

[@riggel8804]

@@delsarcade Cool, thanks for getting back to me.

[@andersgunnarsson2489]

Hi I have the same monitor (and a couple of other bvms). Were you able to figure out the settings for it?

[@riggel8804]

@@andersgunnarsson2489 no sorry

[@delsarcade]

Head over to the B&K rejuvenators Facebook Group. They should be able to help.

[@dzidolgitara]

Hi can you test and rejuvenate guitar amlifier tubes , like EL34 6L6 or 12AX7 ?

[@delsarcade]

I don't think you can rejuvenate those kind of tubes. They are like light bulbs and have a finite life to them. The only thing you can do is test them (they have special tube testers fo those, which I'm not familiar with).

[@JohnEricBooth]

Great video thanks! My local radio and TV museum has the same unit, but not the proper connector, just like you originally. How can I order that proper adapter from Buffet?

[@delsarcade]

Head over to Buffett's website. Scroll to the bottom and e-mail him directly. CR-23 and CR-31 are the 2 most common types. thearcadebuffett.com/

[@RizkiAgungSetiawan]

How can i buy this tool, please?

[@delsarcade]

I got mine on eBay. You can only find them used. Search for B&K rejuvenator.

[@jeffbeirness5585]

This is Fantastic! I just picked up one of these today and really want to learn how to do my own monitors. It came with adapters # 4, 5, 6, 7, 10. Not sure if any of these are arcade monitor compatible? The monitor is a 19K4625. Any advice on what adapter I will need for this monitor?

[@delsarcade]

You have a Wells Gardner K4600. That has a CR-23 neck on the tube. So you'll need that adapter. Your best bet is to remove the neck board and see if what you have fits. If not, fear not, The Arcade Buffet makes them. thearcadebuffett.tictail.com/product/cr-23-adapter-for-the-bk-467-490-tube-rejuvinator While you're there I'd pick up the CR-31 adapter as well, since those are the two most common in arcade monitors and TVs. The CR-23 should cover 25" monitors as well as 19".

[@filter4now]

If it were me (I could be wrong) I would do a "clean and balance" once more after 2nd rejuvenation. I noticed on the picture in picture it was sparking when you were rejuvenating the first time without touching anything. I'll bet the crap that was on the red gun was going back and forth to the green (maybe?) due to the difference in charge. I don't know much about CRTs, just how they work in Physics 3 I just took the massive acceleration of the electrons from the individual red gun with lots of negatively charged crap going to the more-positive adjacent green gun? (it was perfect before - just a random thought)

[@VENUEATHENS]

does tge rejuvenation work on HD CRTs also?

[@delsarcade]

I'm assuming you would need the adapter for the proper neck pinout. So it's hard to say unless you knew what it is exactly.

[@VENUEATHENS]

@@delsarcade Yes, I have a KV-34xbr910 was curious if the hd models are also serviced similarly.. I really enjoyed the video, very detailed and informative which was nice.

[@delsarcade]

From what I understand, the B&K 467 CAN be used safely on a Trinitron CRT tube,which is what your model has. Again, you need the proper adapter and voltage settings.

[@filter4now]

I have an open heater. Its a 1960 17HP4. Do I have a chance in hell of rejuvenation or if not, do you know where I'd have a chance in hell of buying one? The set is in beautiful mint condition

[@delsarcade]

I'm assuming this is your post? ;-) www.avsforum.com/forum/256-direct-view-crt/3089654-17hp4-crt-tube-wanted.html Sounds like your tube is "necked". Unfortunately, she's a goner. However you can probably save the yoke from the tube and look for another compatible tube that will fit into the neckboard. There should be a number on the tube itself saying what size it is. You just need to make sure it has the same number of pins on the neck so it will be compatible with your neckboard. But the yokes are unique so will need to be swapped. Check out my buddy Jason's video on how to do this: kzbin.info/www/bejne/lZq2i4yup7eGgpY

[@Chuck-RETROGAMECAVE]

GREAT! Thanks for making this video.

[@sos.gamers]

Great video, i just saw one on ebay for a 100 so i will try to buy that one i really need to fix the red gun on my pvm is washed out, it would be amazing if you just taked pictures from before and after :(

[@bondscalper]

Excellent video

[@delsarcade]

Thanks! I may do a follow up with more tubes to test. :-) Glad you enjoyed it.

[@adamdavis6958]

Hey Delusional quick question. You don’t show yourself plugging the anode cap back in before rejuvenation. I’m assuming it has to be plugged in to run the rejuv but the only reason I ask is because you also leave the monitor unplugged so I just want to make sure 😅

[@delsarcade]

You don't need the anode cap plugged in to run the rejuvenator. Essentially the rejuvenator takes the place of the chassis. So you definitely DON'T want the monitor powered up while rejuvenating. Some people simply just remove the neck board while in a game and don't remove anything else (with monitor still plugged into game) but everything is powered off except for the actual rejuvenator. But I like to air on the side of caution and I complete remove any connections to the original chassis of the monitor. THEN I connect the rejuvenator.

[@adamdavis6958]

@@delsarcade good to know 🙏🏼 thank you for the awesome video 🤙🏼

[@3dmotormaker]

Is there a reason you did not show the monitors working before the fix ?

[@delsarcade]

I did in previous episodes.

[@3dmotormaker]

@@delsarcade I was expecting a response similar to that - lol

[@delsarcade]

@wargent99 I appreciate the view and thank you for the feedback. To make it easier for non-subscribers, I have created playlists of what I'm working on with attractive thumbnails and of course detailed descriptions that are helpful to the viewer. I strive to make my episodes as complete as possible (on my spare time as a hobby) but occasionally I miss that mark. That said, I will keep it in mind for future episodes. Here a link to the arcade monitor repair playlist: kzbin.info/aero/PLMenkBsi2LKD_UMKA36kBKNZ9sES2lON5

[@kazaakas]

This is really what the CRT community needed, a good tutorial! Would you be so kind to explain what happened to the green gun of the first monitor? Seeing it go all the way down suddenly made me think it was bricked, but somehow by repeating the process it got perfect again? What was going on? Thanks!

[@delsarcade]

Thanks, glad you find the video useful! To answer your question regarding the green gun: When the voltage was applied it knocked off the corrosion inside the tube. Sometimes the bits knocked off will fall on the filaments and cause a short. In this case that's exactly what happened. At 17:09 if you look closely you will see the orange short indictor light up on the lower right. (I didn't notice it). Normally if you see this you simply press the "remove short" button and it zaps the short off. But I did it again and it worked. Same result. Later in the video on the second monitor that's exactly what happened. At 26:45 I noticed the short and (off camera) pressed the "remove short" button which cleared the problem. You can even see the blue concentrated flash in the neck as it gets zapped off. Hope this helped and thanks again for watching and commenting!

[@kazaakas]

​@@delsarcade Awesome response, thank you! That explains so much. I've got one broadcast grade HD CRT here that's fine color-wise, but could use a bit more brightness. Spoke to a tech that used to service them who said that the clean+balance mode of the 467 should be relatively safe to use. I'm excited about it, especially now I understand the process so much better! Still have to find a 467 though.

[@sparcx86channel42]

Cool stuff

[@delsarcade]

Glad you enjoyed it!

[@mnretrogamer7189]

I’m using a 467 also on the same website but it looks different. My tube is a A63AFW36X I see its heater is 6.3 but I see nothing about G1. HELP?!?

[@strife_7]

Hello, I would like to do a rejuv on a Sony PVM 2950, is it good with this B&K and without risk ? I heard Müter BMR 95 was good for Trinitron, thank you.

[@delsarcade]

In general: It's fine to test them (not necessarily rejuvenate them). You would just need a universal adapter and the proper pinout. That said: I wouldn't rejuvenate it unless it failed the tests.

[@strife_7]

What do you mean "test" for you ? Do a clean and balance or just check the health of 3 cathodes ?

[@delsarcade]

@@strife_7 Checking the health.

[@strife_7]

@@delsarcade okay, thank you for advice

[@kyokari4]

Could you make a zinc tutorial for windows??

[@delsarcade]

Do you mean the Zinc Emulator for Namco games? If so, I haven't used that in 10 years.

[@kyokari4]

@@delsarcade yeah

[@luckylukev]

Thanks, this is gold.

[@kazaakas]

Could you explain what the controls branching off of the "Test" mode do?

[@GoldSrc_]

If only these didn't go for stupid prices I'd have bought one. Don't really have a need for one right now, but as a kid I always wanted to have one to fix TVs. I once had my eye on a Sencore CR31 Super Mack that was being sold for like $80, but some other guy bought it before me, that was a sad day for me.

[@delsarcade]

Deals are still out there. Got mine for $60 shipped on eBay about 5 years ago. Don't stop looking!

[@nickrampage1980]

Awesome!

[@kenlink5667]

Should have included shot of monitors before as well as after.

[@delsarcade]

You're not the first to say that. :-) Next time I will show before and after side by side.

[@philexile2954]

Hey I think you hit the green gun on the second tube a bit too much. Once you removed the short, you would have been good to go - no additional rejuv needed. Also, I don’t think it was necessary to run the C&B after the rejuv. You want to hit the filaments as little as possible.

[@delsarcade]

Thanks for watching! One thing I've learned: Feedback is GREAT! I've gotten many suggestions on how to do it better and I really appreciate everyone's input (including yours). There certainly is room for improvement and I'm going to take that knowledge and apply it to my future endeavors. Thank you!

[@philexile2954]

No problem! I’ve been messing around with rejuv units since last Fall, so I’m definitely not an expert either! I know that you want to use the least amount of power as possible since the rejuv will strip the cathodes. I usually leave a tube run for a day or two to be sure the fix is somewhat permanent. It’ll fade if it’s not. I’ve had good results with the 467 C&B. I usually always start with that. I’ve also been messing around with a Konig TR850 and Sencore CR7000. Each of the units will give you a different interpretation of the tube’s health. The Sencore also has a lot of options for the level of restoration you want to perform.

[@DandyDon1]

One thing it cannot cure is phosphor burn :(

[@DandyDon1]

But will you make a sound effects noise as the sparks fly within the guns? My TV repair teacher at SCROC use to do that.... ;)

[@andrew96a]

when you cannot set the one division on the green, don't forget that switch on the left to HIGH!! THEN set the one division!

[@perrymckinney6146]

Rejuvenation just buys you a little time till you find different crt.

[@delsarcade]

Depends. It's on a case by case basis for each CRT. Sometimes a rejuvenation will clear shorts on the guns and fix the CRT with minimal wear.

[@Megalocade]

Depends on the crt brand, i have a 25" crt that was zapped 10 years by an arcade tech with his b&k due to the cab being on all day for years so the crt was dark i bought the cab cheap due to it needing a new monitor, but a rejuvenation saved me some money at the time, i now have my own Rejuvenator and the tube is still in the green and working just fine plus its been used every day since its rejuvenation, never once had to alter gun levels or flyback screen bias, the tube in question is a Philips.