I randomly bought a scope today because it looked so nice and 5 hours later I got your video recommend with the exact same scope that's what I call good timing. Thanks for the Videos and sharing your wisdom.
1962 high school electronics class. I assembled one of 3 kits the instructor bought for the class. The first one assembled when the instructor turned it on a lot of smoke came out. The kid who assembled it shorted the filament ckt and burned a bunch of paths off the pc boards(took the instructor a lot of time to un do the total damage done, lots of mistakes). When he was ready to test mine. He was nervous and asked if it was going to work. I said:"Oh yee of little faith, of course this one will work perfectly". Turned it on and WooHoo!! it worked perfectly. Lesson was follow the instructions. I am a ham radio/electronics guy and have lots of heath kit stuff. Workmanship is ALWAYS suspect. Most of them had something done wrong(many times I suspect thats why I got the thing so cheap). Loved seeing you video and it brought back memories. Bravo!
I had a barely working Mil. one from a 1940's submarine that I fiddled with as a kid. You have reinspired my enthusiasm to get it working again. Thank you.
For me personally, it's not that I have interest in old oscilloscopes, it's that I enjoy the way you repair/restore/align/calibrate/improve older vacuum tube devices of any type. I would enjoy seeing the restoration for those reasons. Thank you, Mr Carlson, for your high quality content.
A restoration video of the Heathkit would be a informative watch to anyone interested in restoring ANY valve based gear. Look forward to it. Big Thumbs Up.
You are making such high quality videos, and i really enjoy watching them. So, yes please, i would really like to see you doing a restoration video of a vintage scope!
Hi Paul, because of you, I have gotten back into electronics. I built a lot of Heathkits in the 70's and I like this one. A suggestion on aligning the crooked line on the screen is to use a pencil and mark the line on the screen, turn the unit off, open it back up and rotate the CRT to level the pencil line. I really enjoy your resto's.
Good job Paul, I vote for a restoration video too! One trick for trace alignment is to leave the CRT collar a little bit loose and slide the case back on (of course that is if you have access to the front of the tube, i.e. no graticule in the way). Then lightly and carefully rotate the CRT from the front until the trace is horizontal. Carefully slide the case off and snug up the collar - makes trace alignment more of a science than an art! ;-) 73 - Dino KL0S
Hi! I personally enjoy a lot watching your old equipment videos, I think old stuff have a *magical* touch, a mix of nostalgia and the "good-old fashioned rugged stuff" feeling. Keep 'em coming!
Thank you Paul for a great video; Yes! I would love to see a full restoration done, this teaches you more how scopes work and most importantly how to repair one.
Hi Paul, I love the old Heathkits. Enjoyed your restoration video and I certainly would appreciate a further video on the restoration process. I own a lot of the older heathkit and eico pieces of test equipment and they are very easy to service but for the most part are very reliable. Thanks again for your most informative videos By the way the hint on soldering to batteries in your previous video was excellent advice. Don
I had one of these scopes years ago before I got my Tecktronics 535-s6, I had quite a few scops through out the years, all my stuff is gone now but I still have a NLS MS-215. I had to replace the batteries with a gel-cell and it works great, I just pulled it out now and after sitting for a few months I need to charge the battery. Thanks for another great video, good basic tips.
My dad had one of these back in the 1950-60s, he always told me it was not a great scope but it was cool. I have that model sitting in my workshop which came from a estate but it is far gone (looks hit it was hit by a truck). I would enjoy a restore video on this model for sure.
l like watching any old test gear being restored so a big yes please from me. I've got quite a few bits of the UK versions of Heathkit gear which still get used in radio repair. Don't forget that wobbulator you had either! Love to see that one fixed up :) Thanks - Andrew
Hi Paul, I had just been watching you'r rebuild on the Tektronix scope and commented on that and hey presto! you have this video on the old Heathkit scope. This was the first scope that I had. It was a lucky find while I was on holiday at Filey on the East coast here in the U.K. I spotted it on the outside front of a second-hand shop there and paid the great price of £5.0 for it. What a bargain. I remember just doing a quick safety check on it and plugin it in and it worked. When I got back home after the holiday I had hours of fun testing out various pieces of kit and gradually getting round to modifying the scope. Thanks for the video, it brought back some good memories.
I enjoyed the video. My former neighbor was a TV and radio repair person in the 1950s. He gave me his old Oscilloscope many years ago and it has been sitting in my work area for years as a reminder of him and for its impressive looks. I've never applied power to it. After seeing your video I'm tempted to restore it. I would be interested in seeing you do one. Thanks so much for doing these videos. You are the best video instructor on the internet.
Another vote for a restoration. You have the best instructional videos on the net. Two big thumbs up! I still have an old Heathkit IO-18 scope. I use a Tektronix 2215A I got at a hamfest now, but I used that old Heath for many years. It probably needs a good going through.
I built one of these in my youth. After building and checking carefully I powered it up and to my horror smoke poured off a large green power resistor. I spent two days going over the circuit and connections. Never found any faults. I eventually just switched on again, the same resistor smoked just a little but all was working fine. I guess it was the paint on the resistor or a little oil maybe getting hot. Scary at the time!! A good little scope, used it for many years without any faults.
You continue to amaze me.I love your videos. I built a lot of heath-kits, I also repaired a lot of them. It always amazed me how some people would screw them up at build time and it would still work(sort of).
Would really like to see you restore the scope... I knew about the tube getter flash when manufactured to remove impurities, but never realized the coating it left behind continued to do so during operation.... this is why I like watching your video's, I always learn something. Thanks, Tom
The resto has been done. Look for the "i" symbol at the top right of your screen, it will appear in the video about mid way through. Click on that link.
I would watch the restoration. I'm finding I have a bit of the repair bug when it comes to electronics. I like repairing stuff, and watching it be repaired! Especially old kit like this scope. =) I learned quite a lot from your channel, I find I'm learning as much off the internet as I am in my electronics classes in college. =)
I have an old RCA WO-33 that is in the process of restoration and and Eico 460 that has a short somewhere that I have yet to discover. Gotta love the old gear to work on it and I enjoy all of your videos greatly. Thanx~Ed Allen~N4TYX~
I am so excited. I have the exact scope and have done all the electrolytic caps prior to discovering this video. Ready to dive in to your restoratio of it THANK you so much
I am an owner of that very same scope and it was left to me from my late Grandfather. Actually I just fixed up a Heathkit AG-8 audio generator and V7a tube voltmeter also left to me by my Grandfather. So, coincidently, the Heathkit 0-11 is next in line and I will follow along with your follow up videos to compare the restoration process.
I really enjoy your videos especially about rebuilding tube type components. I am starting my first boat anchor restore on a sx-28 and need all the input I can get. Keep them coming. You are very good at this and we newbies need it. Thanks Ken - W0KRD
I will look forward to seeing you rebuild the heathkit notice the caps made in usa and valves made in great Britain I made a oscilloscope some 40 years ago from a kit only sorry i binned it many years ago I could kick my self now. love your videos Paul.
I grew up when these things were for sale and built many a Heathkit. I miss those days. I always learn something like the white getter on the tube and how it works.
I have almost the same scope. Had it since I was a kid. I was going to just use it as a shop ornament, but you have inspired me to try to make it work. I would LOVE to see the restoration video!
Hi. Another excellent video from you. As I just have started with tube type equipment (the restauration of a 1949 commercial german radio just started on my bench) I was already on my way to get something similar as the Heathkit you have there. So I am definitley interested in.the restauration... Go on with your channel, I really enjoy all of you work there. Regards from Munich. Thomas
These old scopes were true workhorses and very reliable on a day to day basis. Even though they are only 5 mHz, They are also useful for servicing older tube color TV's I have an old EICO 460 scope which interestingly has a Sawtooth output. I've had the 460 since my early teens. I recently did some repairs on it including replacing the 5UP1 (which was a common CRT for scopes). I vote for showing the restoration. I wish I had more time to create my own videos, but with a busy shop, it becomes difficult. Also, you may want to show the calibration procedure in a different video after the restoration. I had to re-cal my 460 after the repairs. especially since I replaced most of the existing resistors and caps. Keep 'em coming! You have a following of professional technicians peeping your videos! ::) Frank Ferraro--Audio Craft Electronics.
Hey Mr Carlson, love all these videos on antique and obscure bits of gear (that Tesla coil of yours is great!)... slowly after watching these videos I'm getting what all the componentry and design contributes to the overall, just struggle a bit with putting it all together though!! Anyway appreciate the time and effort you put into these videos, thanks!
I put together a Heath O-10 back in the 70's, and it worked great. Unfortunately I lent it to a friend, and it came back broken. Wish I still had it. Would really like to see you put the O-11 back in service!!
Yes on the rebuild video, it might make me brave enough to start on own 1971 Heathkit scope. I brought it up slow on a "variac" and got a trace on the crt, YEAH! The trace dot is the size of a dime however. I guess I'll start with the caps. Thanks for the great work.
I like it. I would be most interested in seeing a full restoration. I think it is good for technicians to have a deep understanding of older technology. I worked with some tube equipment in the military, without really understanding how it worked.
Thanks for the fine run thru. Your comment on the "vintage" poly caps is most useful, that would explain some issues I've had on some other gear.... I just assumed they would not leak. As usual, find your videos through and well produced. Would look forward to a restoration video on this unit.
+zaprodk I agree, people always want the modern stuff, but the older stuff you can get for a LOT less is much better made, more servicable, etc. Unless you're testing modern digital high speed gear, there's no need for it
I recently found this channel, and its been very informative. This scope looks similar to my RCA wo-78a. It was given to me. I only tinker with electronics occasionally and can not justify the price of a newer scope. It is in need of repair. If you do choose to video the restoration I would benefit greatly. The videos you publish are very well organized and professional. Thank you. This is KD5NBZ.
I built 3 of these at work my awesome friend. YES PLEASE! Show us the restoration. It will be like going back in time. I was 19 when I built them. I am now 66. So YES PLEASE!
CRT - High Voltage, low current usually limited. As my prof at college used to say " As your going down, just remember it won't kill you!" I guess that's true unless you hit your head on the way. I found I usually shred my hand when I jerk it back. An old tech taught me to keep one hand in my pocket when working inside electrical panels, electronics etc. That has saved my bacon more times than I like to think about.
Sure, I'll gladly watch more of the restoration, I am really thinking of buying a scope like that as I do not need much more for now at least... Thanks for making this!
Great video, Mr. Carlson. I am currently repairing an Eico 460 and RCA WO-33A. The Eico appears to be a near identical design to this Heathkit. My 460 uses the 5DEP1 instead of the 5UP1 CRT as it's a later model. I would really enjoy a teardown and recapping video of these older tube oscilloscopes. I'm sure your demonstration will have many great tips and tricks. Looking forward to whatever comes next!
Mister fine video and many triks for repair and understand the tubes !!!! Thanks for the share and your are a very accuracy mind about your ( and my passion ....) Really thanks and Mr Carlson long life for you and your dream Lab ..... Eric from France ....
Wow, that looks a lot like my old Knightkit o'scope that I restored. Actually... after watching the video it's almost exactly like my old Knightkit except yours is very clean and was well taken care of. Mine was a basket case that I basically "dekitted" and started from scratch. I enjoyed every second of the process. I have a stack of scopes to tackle one day. I have a gorgeous Tek 545B that I can't wait to work on. Its so big I have to wait until I get a larger bench. Patience is a virtue right? Fun project! I'd be very happy to see your restoration process.
Paul, A video on restoring that old Heathkit would be interesting to watch. I built a Heathkit Vectorscope to help in adjusting one of their kit color tv's I assembled. I was basically a Zenith in kit form. Worked well for a decade.
That's almost scarry now. That's the fourth or fifth time you made a video with exactly the information i need, right before i need it. I scored a heathkit IO-30 a while ago for shipping cost and want to restore it (they seem to be very similar), when i have the time. I'd love to see the full restauration video. thank you :)
I'd love to see it, I really find these videos fascinating. I was born into a world of transistors so seeing how all this tube gear works really is fascinating to me. Thanks for going to the effort of putting these videos together! James. (manchester, uk)
Very interesting indeed. Please do show us the restoration of your scope. I recently obtained an HP 120B scope (mid 1960s vintage, I think) which seems to be fully functional, but could probably use a fresh set of caps. Watching you demonstrate the correct way to do that would be very helpful to me. Thanks for the excellent videos, and please keep them coming!
As a teenager I had a similar IO-12U model, which had a bad mains transformer. Someone kindly rewound the transformer and it worked, but there was a bit of hum deflection on the display. I reduced this a lot by making a tube shield from some mu-metal salvaged from an old TV. I used that 'scope for many years before selling it back in the 90s. Hopefully it still works today. As you say, they can't really be used for proper measurements, and being AC-coupled only was a limiting factor.
Another great video. If you like this older tech, do the Patreon for this channel and you will see how all this seamlessly fits with today's SMD electronics.
Looks like out of 342 comments there is definitely a majority voting yes for restoration. One question you might have missed in the beginning: Because so many of these caps are bad do you advocate for powering it up? Or do you have a controlled way to do that? Isolation transformer? Current limiting circuit, slowly ramp up voltage or any way to be "easier" on it and that might also serve to be semi-diagnostic as well assuming of course that the case is off and y you have a high voltage glove on. Which I just realized begs another question: Of the cheaper disposable gloves which ones would be the least electrically conductive but still thermally conductive for those of us who don't have FLIR cameras? I'm really enjoying making my way through these videos. You have a natural passion for this and in my experience that usually equates with a good to excellent teacher of the material.
Hi Paul. Another very well done video and Yes ! I would like to see you rebuild one of these cool old scopes. I have a Sencore PS148 I am getting ready to do a restore on. It's been my go to for tube type radios and phonographs. Thank you very much for all you do to keep this history alive and well. All my best. Bobby
I would like to see the rebuild. I have one myself, I built back in 1965. And it needs a rebuild as well. Hard time trying to find HV caps. So as usual great video. Also I am working on a TEK 2430 scope. thanks again, keep them comming. Greg
I like the video. I recently got a Telequipment Serviscope S32A that I am planning on restoring. I would like to see you do a restoration video on this one to kind of see where to go and what to look out for. Keep up with the great work.
I randomly bought a scope today because it looked so nice and 5 hours later I got your video recommend with the exact same scope that's what I call good timing.
Thanks for the Videos and sharing your wisdom.
I always enjoy restoration videos on the old stuff Paul. Count me in. 73, Bill.
I'll join the crowd and vote to see the restoration as well!
My vote is in, inspiration to restore an old Watermans pocket occiliscope
1962 high school electronics class. I assembled one of 3 kits the instructor bought for the class. The first one assembled when the instructor turned it on a lot of smoke came out. The kid who assembled it shorted the filament ckt and burned a bunch of paths off the pc boards(took the instructor a lot of time to un do the total damage done, lots of mistakes). When he was ready to test mine. He was nervous and asked if it was going to work. I said:"Oh yee of little faith, of course this one will work perfectly". Turned it on and WooHoo!! it worked perfectly. Lesson was follow the instructions. I am a ham radio/electronics guy and have lots of heath kit stuff. Workmanship is ALWAYS suspect. Most of them had something done wrong(many times I suspect thats why I got the thing so cheap). Loved seeing you video and it brought back memories. Bravo!
+NebukedNezzer Yes the scope I assembled for high school electronics lab was the same model.
I for one would enjoy seeing a rebuild. My O-12 is due as well, it's going on 57 years old!
I would like to see your step by step restoration, Excellent video. Two thumbs up!!
+Walt Anderson Me too!
+KG7UJH Yes definitely but we also want military class vobulator rebuild..
I had a barely working Mil. one from a 1940's submarine that I fiddled with as a kid. You have reinspired my enthusiasm to get it working again. Thank you.
I'm glad to be that inspiration Rich!
For me personally, it's not that I have interest in old oscilloscopes, it's that I enjoy the way you repair/restore/align/calibrate/improve older vacuum tube devices of any type. I would enjoy seeing the restoration for those reasons. Thank you, Mr Carlson, for your high quality content.
A restoration video of the Heathkit would be a informative watch to anyone interested in restoring ANY valve based gear.
Look forward to it.
Big Thumbs Up.
I always enjoy watching your restoration videos. I had one of these scopes but disposed of it about 15 years ago. Now I wish that I had kept it!
Hi Paul, I really like this old stuff and would like the restoration! Great video as always..Take care and 73
My favorite part of this video is "The Magic Smoke". I've witnessed this phenomenon occur a few times! And yes, please make a restoration video.
Thanks!
Thank You!
You are making such high quality videos, and i really enjoy watching them.
So, yes please, i would really like to see you doing a restoration video of a vintage scope!
Hi Paul, because of you, I have gotten back into electronics. I built a lot of Heathkits in the 70's and I like this one. A suggestion on aligning the crooked line on the screen is to use a pencil and mark the line on the screen, turn the unit off, open it back up and rotate the CRT to level the pencil line. I really enjoy your resto's.
Good job Paul, I vote for a restoration video too! One trick for trace alignment is to leave the CRT collar a little bit loose and slide the case back on (of course that is if you have access to the front of the tube, i.e. no graticule in the way). Then lightly and carefully rotate the CRT from the front until the trace is horizontal. Carefully slide the case off and snug up the collar - makes trace alignment more of a science than an art! ;-) 73 - Dino KL0S
Hi! I personally enjoy a lot watching your old equipment videos, I think old stuff have a *magical* touch, a mix of nostalgia and the "good-old fashioned rugged stuff" feeling. Keep 'em coming!
Thank you Paul for a great video; Yes! I would love to see a full restoration done, this teaches you more how scopes work and most importantly how to repair one.
Hi Paul,
I love the old Heathkits. Enjoyed your restoration video and I certainly would appreciate a further video on the restoration process. I own a lot of the older heathkit and eico pieces of test equipment and they are very easy to service but for the most part are very reliable. Thanks again for your most informative videos By the way the hint on soldering to batteries in your previous video was excellent advice. Don
Yes, I would like to see the restoration of the 'scope. Thanks for the video!
Have a good one!
Dave
I had one of these scopes years ago before I got my Tecktronics 535-s6, I had quite a few scops through out the years, all my stuff is gone now but I still have a NLS MS-215.
I had to replace the batteries with a gel-cell and it works great, I just pulled it out now and after sitting for a few months I need to charge the battery.
Thanks for another great video, good basic tips.
My dad had one of these back in the 1950-60s, he always told me it was not a great scope but it was cool. I have that model sitting in my workshop which came from a estate but it is far gone (looks hit it was hit by a truck). I would enjoy a restore video on this model for sure.
l like watching any old test gear being restored so a big yes please from me. I've got quite a few bits of the UK versions of Heathkit gear which still get used in radio repair. Don't forget that wobbulator you had either! Love to see that one fixed up :) Thanks - Andrew
Hi Paul, I had just been watching you'r rebuild on the Tektronix scope and commented on that and hey presto! you have this video on the old Heathkit scope. This was the first scope that I had. It was a lucky find while I was on holiday at Filey on the East coast here in the U.K. I spotted it on the outside front of a second-hand shop there and paid the great price of £5.0 for it. What a bargain. I remember just doing a quick safety check on it and plugin it in and it worked. When I got back home after the holiday I had hours of fun testing out various pieces of kit and gradually getting round to modifying the scope.
Thanks for the video, it brought back some good memories.
I enjoyed the video. My former neighbor was a TV and radio repair person in the 1950s. He gave me his old Oscilloscope many years ago and it has been sitting in my work area for years as a reminder of him and for its impressive looks. I've never applied power to it. After seeing your video I'm tempted to restore it. I would be interested in seeing you do one. Thanks so much for doing these videos. You are the best video instructor on the internet.
Another vote for a restoration. You have the best instructional videos on the net. Two big thumbs up! I still have an old Heathkit IO-18 scope. I use a Tektronix 2215A I got at a hamfest now, but I used that old Heath for many years. It probably needs a good going through.
I built one of these in my youth. After building and checking carefully I powered it up and to my horror smoke poured off a large green power resistor. I spent two days going over the circuit and connections. Never found any faults. I eventually just switched on again, the same resistor smoked just a little but all was working fine. I guess it was the paint on the resistor or a little oil maybe getting hot. Scary at the time!! A good little scope, used it for many years without any faults.
+Michael Beeny Mouse urine will do that as well, smells bad...
You continue to amaze me.I love your videos. I built a lot of heath-kits, I also repaired a lot of them. It always amazed me how some people would screw them up at build time and it would still work(sort of).
I too would be interested in a restoration video series. I have several of these old scopes I need to restore. Thanks for all your great video's
Paul. I always enjoy watching you at work. I have an old Philips scope so would like to watch along as you fix this one up. Keep em coming. Graham
Would really like to see you restore the scope... I knew about the tube getter flash when manufactured to remove impurities, but never realized the coating it left behind continued to do so during operation.... this is why I like watching your video's, I always learn something. Thanks, Tom
Do it, rebuild, repair it!!! I'd love to see a restoration of it!!!
The resto has been done. Look for the "i" symbol at the top right of your screen, it will appear in the video about mid way through. Click on that link.
I would watch the restoration.
I'm finding I have a bit of the repair bug when it comes to electronics. I like repairing stuff, and watching it be repaired! Especially old kit like this scope. =)
I learned quite a lot from your channel, I find I'm learning as much off the internet as I am in my electronics classes in college. =)
I like watching your restoration videos. They go to the heart of what I like to do. Thanks Paul!
I have an old RCA WO-33 that is in the process of restoration and and Eico 460 that has a short somewhere that I have yet to discover. Gotta love the old gear to work on it and I enjoy all of your videos greatly.
Thanx~Ed Allen~N4TYX~
+MedHawk
Thanks for your kind words Ed! Good luck with your scopes.
I am so excited. I have the exact scope and have done all the electrolytic caps prior to discovering this video. Ready to dive in to your restoratio of it THANK you so much
+Blair Mulhall
Your welcome Blair!
I'm going to vote to include the video on the restoration process. Thanks Paul
I am an owner of that very same scope and it was left to me from my late Grandfather. Actually I just fixed up a Heathkit AG-8 audio generator and V7a tube voltmeter also left to me by my Grandfather. So, coincidently, the Heathkit 0-11 is next in line and I will follow along with your follow up videos to compare the restoration process.
Thank you so much for your succinct video on oscilloscope steps for restoration. I learned some highly usable things here!
Your welcome!
Ofcourse I love to see the restoration of this beautiful piece of technical history! And I'm going to watch it right now...
I have aquired a Heathkit O-10 Scope so now ,yes I would love to watch the complete rebuild.
I really enjoy your videos especially about rebuilding tube type components. I am starting my first boat anchor restore on a sx-28 and need all the input I can get. Keep them coming. You are very good at this and we newbies need it.
Thanks
Ken - W0KRD
Thanks Ken. I will doing an in depth video on that receiver in the future.
I will look forward to seeing you rebuild the heathkit notice the caps made in usa and valves made in great Britain I made a oscilloscope some 40 years ago from a kit only sorry i binned it many years ago I could kick my self now. love your videos Paul.
I built one of those when I was 15 years old in 1956 and used it for many years. They were very solid and reliable.
I would also like to see the restoration, you explain very well and the footage is always perfect.
Thumbs up, as always. :)
I grew up when these things were for sale and built many a Heathkit. I miss those days. I always learn something like the white getter on the tube and how it works.
I have almost the same scope. Had it since I was a kid. I was going to just use it as a shop ornament, but you have inspired me to try to make it work. I would LOVE to see the restoration video!
Hi. Another excellent video from you. As I just have started with tube type equipment (the restauration of a 1949 commercial german radio just started on my bench) I was already on my way to get something similar as the Heathkit you have there. So I am definitley interested in.the restauration... Go on with your channel, I really enjoy all of you work there.
Regards from Munich. Thomas
Of course...we want to see you rebuild this scope. This is unique and your take on how to approach it would be awesome!
Yes, one of my favorites. All if your videos are top-notch. Many thanks!
These old scopes were true workhorses and very reliable on a day to day basis. Even though they are only 5 mHz, They are also useful for servicing older tube color TV's I have an old EICO 460 scope which interestingly has a Sawtooth output. I've had the 460 since my early teens. I recently did some repairs on it including replacing the 5UP1 (which was a common CRT for scopes). I vote for showing the restoration. I wish I had more time to create my own videos, but with a busy shop, it becomes difficult. Also, you may want to show the calibration procedure in a different video after the restoration. I had to re-cal my 460 after the repairs. especially since I replaced most of the existing resistors and caps. Keep 'em coming! You have a following of professional technicians peeping your videos! ::) Frank Ferraro--Audio Craft Electronics.
Hey Mr Carlson, love all these videos on antique and obscure bits of gear (that Tesla coil of yours is great!)... slowly after watching these videos I'm getting what all the componentry and design contributes to the overall, just struggle a bit with putting it all together though!! Anyway appreciate the time and effort you put into these videos, thanks!
I'm ready to see the rebuild I enjoy the older stuff really cool. Thanks for sharing.
I certainly hope that you’re still working with the old O’scopes. I have 3 but only one works. I absolutely love working with the old radios and such.
I'm with the "Yes" crowd on the rebuild!
Great trailer - I will wait along with the rest of the gang for the main show - please.
I put together a Heath O-10 back in the 70's, and it worked great. Unfortunately I lent it to a friend, and it came back broken. Wish I still had it. Would really like to see you put the O-11 back in service!!
Yes on the rebuild video, it might make me brave enough to start on own 1971 Heathkit scope. I brought it up slow on a "variac" and got a trace on the crt, YEAH! The trace dot is the size of a dime however. I guess I'll start with the caps. Thanks for the great work.
A restoration would be great to watch. Thanks again Paul.
Carl
I like it. I would be most interested in seeing a full restoration. I think it is good for technicians to have a deep understanding of older technology. I worked with some tube equipment in the military, without really understanding how it worked.
Great look at the Heathkit scope and yes I would like to see you do the restore.
I like seeing all the rebuilds you do.. Great Work!
I`d be very interested in seeing more of this old stuff! Watching this restoration would be great! Thanks!
Thanks for the fine run thru. Your comment on the "vintage" poly caps is most useful, that would explain some issues I've had on some other gear.... I just assumed they would not leak. As usual, find your videos through and well produced. Would look forward to a restoration video on this unit.
I would like to see the video. All of your videos are great! I learn a lot from each one. Thanks Paul! 73
Please do this restoration. Your repair and mod work is why I subscribed.
I'd love to see you fix the scope! - I love old scopes (especially the ones with a circular CRT) and i like see your working. Keep up the good work.
+zaprodk I agree, people always want the modern stuff, but the older stuff you can get for a LOT less is much better made, more servicable, etc. Unless you're testing modern digital high speed gear, there's no need for it
I enjoy your supreme meticulous work on this channel. Definitely count me in for the rebuild vote as well.
I recently found this channel, and its been very informative. This scope looks similar to my RCA wo-78a. It was given to me. I only tinker with electronics occasionally and can not justify the price of a newer scope. It is in need of repair. If you do choose to video the restoration I would benefit greatly. The videos you publish are very well organized and professional. Thank you. This is KD5NBZ.
Yes I want to see your restoration, I love all your restorations.
I built 3 of these at work my awesome friend. YES PLEASE! Show us the restoration. It will be like going back in time. I was 19 when I built them. I am now 66. So YES PLEASE!
I would be interested in watching the restore. Keep up the good work.
CRT - High Voltage, low current usually limited. As my prof at college used to say " As your going down, just remember it won't kill you!" I guess that's true unless you hit your head on the way. I found I usually shred my hand when I jerk it back. An old tech taught me to keep one hand in my pocket when working inside electrical panels, electronics etc. That has saved my bacon more times than I like to think about.
Sure, I'll gladly watch more of the restoration, I am really thinking of buying a scope like that as I do not need much more for now at least...
Thanks for making this!
I really like the restoration mr Paul. Great stuff,
Great video, Mr. Carlson. I am currently repairing an Eico 460 and RCA WO-33A. The Eico appears to be a near identical design to this Heathkit. My 460 uses the 5DEP1 instead of the 5UP1 CRT as it's a later model. I would really enjoy a teardown and recapping video of these older tube oscilloscopes. I'm sure your demonstration will have many great tips and tricks. Looking forward to whatever comes next!
Mister fine video and many triks for repair and understand the tubes !!!! Thanks for the share and your are a very accuracy mind about your ( and my passion ....) Really thanks and Mr Carlson long life for you and your dream Lab ..... Eric from France ....
Another vote for a restoration video, Paul. The price for hamfest scopes is sure to rise as a result!
Very interesting. MORE vintage stuff, please!
Wow, that looks a lot like my old Knightkit o'scope that I restored. Actually... after watching the video it's almost exactly like my old Knightkit except yours is very clean and was well taken care of. Mine was a basket case that I basically "dekitted" and started from scratch. I enjoyed every second of the process. I have a stack of scopes to tackle one day. I have a gorgeous Tek 545B that I can't wait to work on. Its so big I have to wait until I get a larger bench. Patience is a virtue right?
Fun project! I'd be very happy to see your restoration process.
Paul,
A video on restoring that old Heathkit would be interesting to watch. I built a Heathkit Vectorscope to help in adjusting one of their kit color tv's I assembled. I was basically a Zenith in kit form. Worked well for a decade.
Another great video! I love old scopes!
That's almost scarry now. That's the fourth or fifth time you made a video with exactly the information i need, right before i need it. I scored a heathkit IO-30 a while ago for shipping cost and want to restore it (they seem to be very similar), when i have the time. I'd love to see the full restauration video. thank you :)
I like old scopes! Fixing it up would make a great video.
I love these kinds of videos, Mr Carlson of,Mr Carlson's Lab is Brilliant!!!
I'd love to see it, I really find these videos fascinating. I was born into a world of transistors so seeing how all this tube gear works really is fascinating to me. Thanks for going to the effort of putting these videos together! James. (manchester, uk)
I have just started to restore an IO-12, so this video is perfect for me.
Very interesting indeed. Please do show us the restoration of your scope. I recently obtained an HP 120B scope (mid 1960s vintage, I think) which seems to be fully functional, but could probably use a fresh set of caps. Watching you demonstrate the correct way to do that would be very helpful to me. Thanks for the excellent videos, and please keep them coming!
As a teenager I had a similar IO-12U model, which had a bad mains transformer. Someone kindly rewound the transformer and it worked, but there was a bit of hum deflection on the display. I reduced this a lot by making a tube shield from some mu-metal salvaged from an old TV. I used that 'scope for many years before selling it back in the 90s. Hopefully it still works today. As you say, they can't really be used for proper measurements, and being AC-coupled only was a limiting factor.
A restoration series would be great!
Another great video. If you like this older tech, do the Patreon for this channel and you will see how all this seamlessly fits with today's SMD electronics.
Looks like out of 342 comments there is definitely a majority voting yes for restoration. One question you might have missed in the beginning: Because so many of these caps are bad do you advocate for powering it up?
Or do you have a controlled way to do that? Isolation transformer? Current limiting circuit, slowly ramp up voltage or any way to be "easier" on it and that might also serve to be semi-diagnostic as well assuming of course that the case is off and y you have a high voltage glove on.
Which I just realized begs another question: Of the cheaper disposable gloves which ones would be the least electrically conductive but still thermally conductive for those of us who don't have FLIR cameras?
I'm really enjoying making my way through these videos. You have a natural passion for this and in my experience that usually equates with a good to excellent teacher of the material.
Thanks for your kind words. Glad your enjoying the channel. I do have a current limited (isolated) supply.
A restoration sprinkled with those good tips would be great :) Thanks for a great channel!
Nicely done. Yes you should record the resto on the scope.
Hi Paul. Another very well done video and Yes ! I would like to see you rebuild one of these cool old scopes. I have a Sencore PS148 I am getting ready to do a restore on. It's been my go to for tube type radios and phonographs.
Thank you very much for all you do to keep this history alive and well.
All my best.
Bobby
Yes, I'd like to see the rebuild/restoration.
I would like to see the rebuild. I have one myself, I built back in 1965. And it needs a rebuild as well. Hard time trying to find HV caps. So as usual great video. Also I am working on a TEK 2430 scope. thanks again, keep them comming. Greg
Great video! I would like to see a rebuild of a scope like this. Reminds me of my high school days back in the 70's
Again, I will say. Excellent job. Well Done and Very Informative. I,m in too!
I like the video. I recently got a Telequipment Serviscope S32A that I am planning on restoring. I would like to see you do a restoration video on this one to kind of see where to go and what to look out for. Keep up with the great work.