wow, what a video, what a repair! Such a high quality equipment getting it's deserved attention. Thanks for doing it for us. I was wondering why didn't you replace the visibly faulty capacitor even before checking for the transistors, but later you explained it.
109D (the leaky one) - wet tantalum 150D (19:48) - solid tantalum Both made by Vishay and still produced today (and have very impressive price). P.S Nice troubleshooting and repair.
Wow. A very interesting video and diagnosis. It was great to see a piece of equipment from the 1970s, particularly, as I have never seen anything with sockets for the transistors.
me too part id,s metal work construction all with part numbers all hi end gear all best quality parts of time shame how things r now with lots of v cheap stuff with little life now poor quality ect how times have changed in this industry
This guy once again silently shows us one of his quotes a few years back. "If you know where to look for the problem, you can definitely fix it." - DanyK
"How can we make this unit more expensive?" "I know, let's build it like a tank, and let's socket everything, including the transistors, and let's gold plate everything else"! I was in grade 10 high school when this was made. It's freaking gonna outlive me :(
This stuff was all industrial grade back then, and a storage scope was an extra expensive specialty piece. I forget the exact figures but IIRC the Tek 465 launched with a price of around $10k USD, inflation adjusted.
Congratulations on the repair. You diagnosed the fault by process of illimination, worked out the circuit functionality well, and honed in on the area of circuitry to fault find . I'm impressed.👍✅💯😏
Brilliant video - I've not seen a Sony Tektronix badged one before. Mr Carlsons Lab has restored some vintage Tek gear - it's so beautifully constructed and worth a view! Thanks lots for that one.
Guys take a look at those internals. What kind of engineering it was back then!! Without nowadays CAD softwares and so on... I was repairing similar Tektronix oscilloscope from that era, it has two time bases, crazy functions. Top notch!! I was literally touched by that drum-engaging gold plated switches scale selector. Well built crazy stuff ment to last and to be repaired quite easily in case of failure. Transistors in sockets and so on.. This will never happen again.
@@-yeme- Back in the mid '80s I used to design circuit board. Software was available, but my company was too cheap to buy the computers needed, so I did it all with black tape on mylar. It's really easier than it looks, once you've gotten some experience. In the '90s I wrote software to add locally written functionality to CAD systems at GM, by then, of course, everything was CAD.
Great job troubleshooting. That beautiful old equipment brings back a lot of memories. I was 14 years old and very interested in electronics when this was built. Ham radio and a lot of home-built projects. My father was an electronic technician with Tektronix from 1966 until 1997, and I learned a lot from him, and by studying old Tek equipment. Back in the '80s I used to buy old Tek 'scopes at swap meets, repair them and resell them. Such memories. Back then capacitors were specified in microfarads and picofarads, I don't remember nanofarads being a thing in the US until years later.
Holy shit would love to see you go through those chips and your transistor collection. All of those beautiful old chips would be amazing to see them dumped out. I have a collection similar... I love things like that and it takes years to amass a big collection But you never know when you'll need something I keep coming back to this video because of your awesome diagnostics and repair work... But every time I remember that I want to see your collection of transistors and chips also!
Heads up mate! Out of so many repair channels I must say your knowledge is superior and so is the presentation. Keep it up and a huge thanks from a retired repair technician.
it is a real pleasure watching the testing being done with hobby test equipment 😎 most anybody can fix stuff with expensive testers. i have used this type of Sony scope. nice!
Wow, this video was like porn! Proper detective work, good explanations, you showed off your assortment of transistors, you got the oscilloscope working again, and the cat was in it too 😁
16:11 I translated the yellow card for you: Dear Customer, On the occasion of the repair or inspection of your Tektronix device, the primary power supply parts were checked for safety in accordance with VGB4. A test sticker has been attached to the device. The VGB4 demands a new check before the end of 6 months. Your Textronix Service Center
This is great, I have to fix my Tektronix 466 which has this problem to a lesser degree. It's got other problems too though, good to know the cause of the problem you had. Thank you very much!
11:49 older US schematics often didn't use nano, for some reason. They usually only list uF (also written as "MFD" or no unit abbreviation is written at all, like here) and pF values.
This is what I was used to, having grown up in the US in the 80's - everything was either µF or pF, never nF, unless I ended up with one of those British electronics magazines like Everyday Practical Electronics. 0.001 - 0.1 µF was how I'd expect capacitances in the nF range to be written. I found nF very confusing when I first encountered it.
I'm a student and bought a Tektronix 2430 oscilloscope for 20$. Believe me, I'm the happiest person on earth. But after I went back home, it doesn't work properly. The lines are chaotic. I've tried everything to understand it, read datasheets, research, asked people. But no, I couldn't fix it. The oscilloscope is such an astronomically complicated device. I thought I have a decent intellect. But now, I feel like an absolute idiot. I learnt many things tho. You are a very good engineer, I wish I will get better.
Rewatch this video a couple of times and learn how he reasons out the repair. Then you will be able to think better about how to repair your 2430. Diagnose the problem on the schematic before dealing with the actual scope.
@@cjay2 yeah I understand what he did. The interesting part is how he quickly finds the components in this complicated circuitry. That's my problem, I can't easily find the exact components. But I will try again later might just take a day. With his reasoning, I can now make theories on why my scope is malfunctioning. Thanks!!
That's a digital oscilloscope so there are many more places for something to go wrong. It could be the analog frontend, the ADCs, the digital system, or the CRT output. I would first see if the text overlays work properly and are stable. If that doesn't work then nothing will. If it was an analog oscilloscope I would say to make sure the range switches are cleaned.
Well done :-D That must have cost a fortune originally, what a well made oscilliscope. The sockets with a white seal was a smart idea, no dampness gets in to the connection. Ive seen sockets used on equipment but not that quality. Gold everywhere, no tarnish. Now did you diagnose the fault before the video was made ha ha :-D
Superb Job, Daniel! I've got one of these scopes as well and worked on several such units (basically to make a good one out of a few "dogs"). One common problem is burnt-in CRTs. These vintage storage tubes are quite fragile and don't cope with high brightness too well, especially at no or very slow deflection. Yours looks almost pristine! Another peculiar detail in this instrument is that the PCB that accomodates the vertical attenuator cam switch assembly is made of a polyacrylic (plexiglass) substrate! I don't know why Tektronix chose this material here, the adhesion of the copper/gold traces is way less strong than on FR4 and soldering on this stuff is a nightmare due to its thermoplastic characteristic, maybe Tektronix even used a special low-temp alloy solder?? Could the choice have been made for better dielectric characteristics reasons? Otherwise, these "museum pieces" hold up surprisingly strong. But especially the "Tek-Sony" instruments of this compact (300) series are often a nightmare to work on, even upon disassembly it makes good sense to follow the service manual (which are fortunately available) since more often than not it isn't completely obvious in what sequence subassemblies are supposed to be removed for easy access to certain places. Internal de-bonding of the tiny bond wires of vintage metal can transistors happens once in a while. If the base bond came lose in your particular transistor, the observed behaviour gets obvious. To check for such a problem, you may try tapping the can (wit a small metal tool or the like) while the transistor is connected to a test circuit. Or just apply a high(er) voltage across the terminals with a current limiting resistor to see if the (tiny) gap may break down. Anyway, It was pure joy to watch your repair video and to see another one of these marvels being restored to working condition. Thanks so much for that!
Its always i big joy to watch your repair videos! Such a genius to analyse and understand such a complicated device from the 1970s with lots of tht-mounted components! I prefer these over modern SMD-parts which are hardly accessible. I have an old analog Hameg 60 Mhz 2 channel oscilloscope which i bought used and just made it work more smoothly mechanically. To find the defective transistors and adjust the right potentiometers is excellent job - hard to find such a genius today! Great respect!
When I transitioned from mainly valve stuff to transistors I tried to buy some transistor sockets but was warned off - a fault just waiting to happen I was advised. That would have been late @1960s. I see they used probably sil. grease to minimise poor contact risk on this premium product.
One look at the inside of this instrument and I would have immediately panicked. Thanks for taking us through your thought process! Although I now believe that you slowed it down 1000x so someone like I could understand it. 🙂
Hello, nice that it works again! Did you also manage to repair the Trigger function? We couldn't made the thing trigger, at least it was the reason we threw it out. The cable was cut 100% because of a non-passed insulation test by the test company which made the test in our laboratory.
I'm not famimiar with all the trigger settings, but I think it worked well in both AC and DC trigger modes. In both cases it was possible to find a position of the trigger knob where it synchonized.
This was great, I do a fair amount of high voltage work on marine systems and to have a oscilloscope that runs on low voltage is perfect. There are still models like this available in my are but I was always nervous about calibration and reparability. This helps a lot ....thanks
Great video, I like your explanations even if I mostly know, there were few things new to me in this video. Make a video about the component tester. What model it is? Also, can you compare it with other models or a dmm?
Interesting transistor failure, if you still have it could you dremel the top and look what's cause the failure of the bonding, may a mechcanical failure like the die un-glued from the case and the bonding broke, or something else ?
Man i would love to find something like this one day but thats probably not happening i would have the beggist chance at some radioamaters gathering i assume. Anyways the video was really interesting and it is great that you saved this piece of old tech.
I would have replaced all the electrolytic capacitors as a precaution in this unit being they are all over 40 years old and wont be that far behind on leaking and failing themselves. Other than that a great job fixing it.
Incredible complex oscilloscope fixed by an incredible talented man! Great content!
Agree, couldn't say more.
@@brucepickess8097 Same here
wow, what a video, what a repair! Such a high quality equipment getting it's deserved attention. Thanks for doing it for us. I was wondering why didn't you replace the visibly faulty capacitor even before checking for the transistors, but later you explained it.
109D (the leaky one) - wet tantalum
150D (19:48) - solid tantalum
Both made by Vishay and still produced today (and have very impressive price).
P.S Nice troubleshooting and repair.
Dude…respect. So few people understand analog electronics nowadays.
I learned so many things from such a short video. Very succinct and informative. Thanks again. Please do more Tektronix videos 😊
Sadly, Tektronix scopes are very pricey, even broken ones I think... Perhaps somebody could donate it.
Wow. A very interesting video and diagnosis. It was great to see a piece of equipment from the 1970s, particularly, as I have never seen anything with sockets for the transistors.
CuriousMarc is 60s and 70s tech galore (some 40s and 50s tech too)
Excellent, excellent excellent!
Simply excellent: analysis, diagnostics, explanation. Thanks for the great work!
These older complex analog devices always blow my mind.
Edit: well done on the repair 👍
I am in the middle of restoring one of these, I love old CRT displays.
Good luck!
I hope a successful repair
What's wrong with yours?
Heck yeah. This should be great!
And it is. Love the old tek equipment. Beautiful!
me too part id,s metal work construction all with part numbers all hi end gear all best quality parts of time shame how things r now with lots of v cheap stuff with little life now poor quality ect how times have changed in this industry
This guy once again silently shows us one of his quotes a few years back.
"If you know where to look for the problem, you can definitely fix it."
- DanyK
It would be great to have you as a neighbor & a friend!
Great job fixing this!👍
The every frame of this video helps me .❤️
I really enjoyed this video. Thanks for the technical explanation and explaining your thoughts on where to start and why. All around a good fix.
Excellent work
"How can we make this unit more expensive?"
"I know, let's build it like a tank, and let's socket everything, including the transistors, and let's gold plate everything else"!
I was in grade 10 high school when this was made.
It's freaking gonna outlive me :(
This stuff was all industrial grade back then, and a storage scope was an extra expensive specialty piece. I forget the exact figures but IIRC the Tek 465 launched with a price of around $10k USD, inflation adjusted.
Congratulations on the repair. You diagnosed the fault by process of illimination, worked out the circuit functionality well, and honed in on the area of circuitry to fault find . I'm impressed.👍✅💯😏
Big like for the laparascopy job. That cat simply reads my mind.
One of the best videos on oscilloscopes I ever watched. Really amazing insight on electric circuit analysis.
Well done. Thank you. Another 40 years of service ahead!
Tek scopes are beautifully engineered. Good on you for saving this one, mate!
Brilliant video - I've not seen a Sony Tektronix badged one before. Mr Carlsons Lab has restored some vintage Tek gear - it's so beautifully constructed and worth a view! Thanks lots for that one.
Wonderful repair of a wonderful old scope!!!
Guys take a look at those internals. What kind of engineering it was back then!! Without nowadays CAD softwares and so on... I was repairing similar Tektronix oscilloscope from that era, it has two time bases, crazy functions. Top notch!! I was literally touched by that drum-engaging gold plated switches scale selector. Well built crazy stuff ment to last and to be repaired quite easily in case of failure. Transistors in sockets and so on.. This will never happen again.
And even without software! ONLY hardware - yippi! ;-)ware - yippi! ;-)
doing the board layout for something like this with literally a pencil and paper must have been crazy
And it will last other 50 years ore more! Exactly the same as a Chinese equipment...😂😂😂😂
I am thinking that who and how they designed the manual so perfectly without modern day softwares in 1975.
@@-yeme- Back in the mid '80s I used to design circuit board. Software was available, but my company was too cheap to buy the computers needed, so I did it all with black tape on mylar. It's really easier than it looks, once you've gotten some experience. In the '90s I wrote software to add locally written functionality to CAD systems at GM, by then, of course, everything was CAD.
Great job troubleshooting. That beautiful old equipment brings back a lot of memories. I was 14 years old and very interested in electronics when this was built. Ham radio and a lot of home-built projects. My father was an electronic technician with Tektronix from 1966 until 1997, and I learned a lot from him, and by studying old Tek equipment. Back in the '80s I used to buy old Tek 'scopes at swap meets, repair them and resell them. Such memories. Back then capacitors were specified in microfarads and picofarads, I don't remember nanofarads being a thing in the US until years later.
Holy shit would love to see you go through those chips and your transistor collection. All of those beautiful old chips would be amazing to see them dumped out. I have a collection similar... I love things like that and it takes years to amass a big collection But you never know when you'll need something
I keep coming back to this video because of your awesome diagnostics and repair work... But every time I remember that I want to see your collection of transistors and chips also!
DGW is one helluva a good electrical engineer. Impressive work.
Heads up mate! Out of so many repair channels I must say your knowledge is superior and so is the presentation. Keep it up and a huge thanks from a retired repair technician.
WOW, what an incredibly smart man you are. I love your videos, so informative. Thanks so much for sharing.
it is a real pleasure watching the testing being done with hobby test equipment 😎 most anybody can fix stuff with expensive testers. i have used this type of Sony scope. nice!
The insides look so beautiful
Wow, this video was like porn!
Proper detective work, good explanations, you showed off your assortment of transistors, you got the oscilloscope working again, and the cat was in it too 😁
Wow, well done! Keep making long and detailed video please!
16:11 I translated the yellow card for you:
Dear Customer,
On the occasion of the repair or inspection of your Tektronix device, the primary power supply parts were checked for safety in accordance with VGB4. A test sticker has been attached to the device.
The VGB4 demands a new check before the end of 6 months.
Your Textronix Service Center
This is great, I have to fix my Tektronix 466 which has this problem to a lesser degree. It's got other problems too though, good to know the cause of the problem you had. Thank you very much!
Great video!
Also running it off DC means you can run it mains isolated 😃
11:49 older US schematics often didn't use nano, for some reason. They usually only list uF (also written as "MFD" or no unit abbreviation is written at all, like here) and pF values.
This is what I was used to, having grown up in the US in the 80's - everything was either µF or pF, never nF, unless I ended up with one of those British electronics magazines like Everyday Practical Electronics. 0.001 - 0.1 µF was how I'd expect capacitances in the nF range to be written. I found nF very confusing when I first encountered it.
some older US literature and schematics even used mmfd (micro-micro-farad) instead of picofarad
I've seen some old tube era schematics where every cap is in uF with no units specified, they'd write out a 22 pF cap as 0.000022.
Amazing device I would love to have one.
The sockets are really cool
If only new products were so serviceable
I'm a student and bought a Tektronix 2430 oscilloscope for 20$. Believe me, I'm the happiest person on earth. But after I went back home, it doesn't work properly. The lines are chaotic. I've tried everything to understand it, read datasheets, research, asked people. But no, I couldn't fix it.
The oscilloscope is such an astronomically complicated device. I thought I have a decent intellect. But now, I feel like an absolute idiot. I learnt many things tho.
You are a very good engineer, I wish I will get better.
You definitely need a scope to fix another scope :)
@@westelaudio943 absolutely!! I went to a repair shop they told me they could fix it. But charging me for 250$!!!!
Rewatch this video a couple of times and learn how he reasons out the repair. Then you will be able to think better about how to repair your 2430. Diagnose the problem on the schematic before dealing with the actual scope.
@@cjay2 yeah I understand what he did. The interesting part is how he quickly finds the components in this complicated circuitry.
That's my problem, I can't easily find the exact components. But I will try again later might just take a day.
With his reasoning, I can now make theories on why my scope is malfunctioning.
Thanks!!
That's a digital oscilloscope so there are many more places for something to go wrong. It could be the analog frontend, the ADCs, the digital system, or the CRT output. I would first see if the text overlays work properly and are stable. If that doesn't work then nothing will. If it was an analog oscilloscope I would say to make sure the range switches are cleaned.
Great explantation - thank you for the video!
Super nicely done. You deserve much more attention than the youtube algorithms are giving you.
Nice repair.
Well done :-D
That must have cost a fortune originally, what a well made oscilliscope.
The sockets with a white seal was a smart idea, no dampness gets in to the connection.
Ive seen sockets used on equipment but not that quality.
Gold everywhere, no tarnish.
Now did you diagnose the fault before the video was made ha ha :-D
To diagnose the fault before video, didn't make him less genius engineer.
@@tiborbogi7457 Don't over react, i was pulling his leg, He has a good sense of humor you know :-D
HI end gear at time very $$$ and long lasting
Incredibly beautiful piece of engineering art.
Thank you for this video. Great analysis and repair.
Nice work, saved the scope. Love the cat!
Beautiful diagrams easy to follow.
Note to myself: Before seeing inside anything: Check capacitors, eletrolytic and tantalum ones. A slow ramping up signal cries for a dead cap
That makes a less interesting video ;)
Superb Job, Daniel! I've got one of these scopes as well and worked on several such units (basically to make a good one out of a few "dogs"). One common problem is burnt-in CRTs. These vintage storage tubes are quite fragile and don't cope with high brightness too well, especially at no or very slow deflection. Yours looks almost pristine!
Another peculiar detail in this instrument is that the PCB that accomodates the vertical attenuator cam switch assembly is made of a polyacrylic (plexiglass) substrate! I don't know why Tektronix chose this material here, the adhesion of the copper/gold traces is way less strong than on FR4 and soldering on this stuff is a nightmare due to its thermoplastic characteristic, maybe Tektronix even used a special low-temp alloy solder?? Could the choice have been made for better dielectric characteristics reasons?
Otherwise, these "museum pieces" hold up surprisingly strong. But especially the "Tek-Sony" instruments of this compact (300) series are often a nightmare to work on, even upon disassembly it makes good sense to follow the service manual (which are fortunately available) since more often than not it isn't completely obvious in what sequence subassemblies are supposed to be removed for easy access to certain places.
Internal de-bonding of the tiny bond wires of vintage metal can transistors happens once in a while. If the base bond came lose in your particular transistor, the observed behaviour gets obvious. To check for such a problem, you may try tapping the can (wit a small metal tool or the like) while the transistor is connected to a test circuit. Or just apply a high(er) voltage across the terminals with a current limiting resistor to see if the (tiny) gap may break down.
Anyway, It was pure joy to watch your repair video and to see another one of these marvels being restored to working condition. Thanks so much for that!
Well-done repair and reasoning throughout.
Its always i big joy to watch your repair videos! Such a genius to analyse and understand such a complicated device from the 1970s with lots of tht-mounted components! I prefer these over modern SMD-parts which are hardly accessible. I have an old analog Hameg 60 Mhz 2 channel oscilloscope which i bought used and just made it work more smoothly mechanically. To find the defective transistors and adjust the right potentiometers is excellent job - hard to find such a genius today! Great respect!
When I transitioned from mainly valve stuff to transistors I tried to buy some transistor sockets but was warned off - a fault just waiting to happen I was advised. That would have been late @1960s. I see they used probably sil. grease to minimise poor contact risk on this premium product.
Gold flash on the sockets and the transistor leads makes perfect connections. However, when vibration is included, sockets are a problem.
Very good analysis, congrats!
Always a pleasure to watch.
Awesome oscilloscope, great repair.
Nice work! Nice oscilloscope, too.
Wow beautifully explained. Thank you.
you are just amazing. A grand master in Electronics!
Amazing repair. Thanks for all your hard work.
One look at the inside of this instrument and I would have immediately panicked. Thanks for taking us through your thought process! Although I now believe that you slowed it down 1000x so someone like I could understand it. 🙂
That was some impressive repair work! Really interesting to watch as well 👍
Marvel of electronics engineering.
Great job! Well done!
Nice repair video 👍
Well done. Ive never seen a Tektronix / Sony scope before
And it is worth noting that the transistor that was used for the repair was manufactured by CEMI, in Poland. Me too.
This is the only 314 I’ve ever seen besides mine that I use every day!
nice video and what a beautifull scope only using a bunch of transistors and 2 ics IN SOCKET! wow never seen this but great scope and vid
Only legends can fix those
Hello, nice that it works again! Did you also manage to repair the Trigger function? We couldn't made the thing trigger, at least it was the reason we threw it out.
The cable was cut 100% because of a non-passed insulation test by the test company which made the test in our laboratory.
I'm not famimiar with all the trigger settings, but I think it worked well in both AC and DC trigger modes. In both cases it was possible to find a position of the trigger knob where it synchonized.
Amazing work. Thank you...
This was great, I do a fair amount of high voltage work on marine systems and to have a oscilloscope that runs on low voltage is perfect. There are still models like this available in my are but I was always nervous about calibration and reparability. This helps a lot ....thanks
Thats old scool. I love it.
I liked the asmr paper trace with a pen.
Great work.
Fantastic video......thank you!
Very cool video, and very cool scope from my birth year 1975 🤣.
Looks like it must've cost a fortune when new.
Great video, I like your explanations even if I mostly know, there were few things new to me in this video.
Make a video about the component tester. What model it is? Also, can you compare it with other models or a dmm?
WORKING COMPLETELY WITHOUT SOFTWARE - G R E A T! ;-)
Greetings, Doc64 - healing broken Commodore 64s
Nice repair!
Interesting transistor failure, if you still have it could you dremel the top and look what's cause the failure of the bonding, may a mechcanical failure like the die un-glued from the case and the bonding broke, or something else ?
31:34 Nice to see polish transistors ;)
its like repairporn. so satisfied.
Oooo, an oscilloscope repair!
I have the same one in my lab bench!
31:36 - old Poland transistors made by CEMI, not bad :)
This was a good, smart repair! :)
Great 👍🏻👍🏻👏🏼👏🏼👏🏼❤️❤️❤️🙏🏻🙏🏻🙏🏻
Mě se líbí tyhle staré osciloskopy s CRT obrazovkou. Hlavně ty od TESLA :D
Cracking video !...cheers.
Thank you it's great video
Tektronix oscilloscopes are meant to be very easy to service for their complexity.
Ha I have the exact same model! Thanks!
Only wow, that was e realy great Job, perfekt.👌👍
Nice repair :-)
I'd be on the lookout for tantalum capacitors, besides electrolyte ones.
Man i would love to find something like this one day but thats probably not happening i would have the beggist chance at some radioamaters gathering i assume.
Anyways the video was really interesting and it is great that you saved this piece of old tech.
I would have replaced all the electrolytic capacitors as a precaution in this unit being they are all over 40 years old and wont be that far behind on leaking and failing themselves. Other than that a great job fixing it.
Hello my brother amazing your all video waw good job
Yeah "Baby". Dats wat Im talkin bout. Very COoL and downright skillful. You are a "Diode of Many Trades", My GF says she loves you :O\
How did you calibrated a probe to that scope? Because I have one as well but I don't know where is a test signal.