Signal Tracer Troubleshooting Repair and Modification

Рет қаралды 209,757

8 жыл бұрын

More electronic troubleshooting adventures! Join Paul in the Lab as he explains "in great detail" the circuitry inside a Heathkit T-3 signal tracer. Then Paul will discover and fix some design flaws. See how the Watt meter (eye tube) and noise tracer functions work.

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@murdoch817 7 жыл бұрын

Mr. Paul, what can I say except you produce the BEST videos I have ever encountered. Camera work A+, knowledge A+, explanations A+. You make other people's productions look like a pre-school finger painting. I have been doing what you do as a hobby for 20+ years and the first video I watched made me feel like I knew nothing. Please never stop, it has become Saturday ritual to watch 2-3 videos. I have learned SO MUCH,, keep up the awesome work. FYI I have been a chip head since age 10. Thank you so much cause I can imagine the gobs of time it takes to make just 1 production. Way to go, thanks again, Doug USA Philadelphia

@MrCarlsonsLab 7 жыл бұрын

Thanks for the kind words Doug! More video's on the way.

@markweber1677 4 жыл бұрын

Couldn't agree with you more mr. Carlson is amazing the genius so glad I found his channel also!

@minkorrh 4 жыл бұрын

Right on. The amount of innate knowledge that just pours out of this channel is second to none. I'm a 'know-nothing' compared to most of you but a 'know-everything' to my friends lol. I have loved electronics since I was a kid but never got the chance to stream through it in a formal education sense so my theory lacks substantially. It's great to learn from people like Mr. Carlson.......especially Mr. Carlson. Explanations, theory, 'hidden secrets' ....you get it all here. Thanks Mr. C!

@lesliestone9166 2 жыл бұрын

@@minkorrh a

@SkyWire88 2 жыл бұрын

I gotta know, Mr. Merlin--------exactly what is a "chip head"? Thanks!

@paulh3846 7 жыл бұрын

Long term technician here. Now 70. You do a great job of explaining as you troubleshoot. I grew up with vacuum tubes and still love them if one can love something like that. I've taught many troubleshooting classes over the years and am always amazed at the looks I've seen from students when I bring a vacuum tube device in for them to diagnose and repair. The "deer in the headlights" types of expressions. You do an excellent job in your presentations and video work. I especially like your thoroughness to make a device work as well as it can, even if some mods are required. Keep the videos coming.

@bensolomon1872 2 жыл бұрын

Paul - I've been continuously practicing electronic troubleshooting for 50+ years and I learn at least of a couple new tools and thoughtful insights - sometimes subtle, but always useful - with every video. And your even, unassuming demeanor and respect for the student are present throughout. Thanks and bravo!

@donaldj.mangold1342 8 жыл бұрын

Hi Paul, Excellent. I would surely expect a bad volume control and either replaced it or doused it with contact cleaner. Your in depth kinowledge of troubleshooting has been very well presented and at my advanced age (81) I can still learn and appreciate the skills of others. Thank you for your excellent presentation and looking forward to more great learning videos. Don

@MrCarlsonsLab 8 жыл бұрын

Hi Don. Age is only a number, and at 81, using a computer and interested in electronics..... That's absolutely great!!!! I'm very glad your enjoying the video's, and thanks for your kind words too!

@geraldwellborn5047 Жыл бұрын

I learned electronics in the mid to late 60's from hanging around a radio & TV repair shop. It was a 1-man shop, so I became his helper. He was an old head at fixing radios and televisions. In fact, other shops would often call on him for help when they came across a tough old dog. I learned a lot from him, and I was very blessed to be his helper. He was much like you Mr. Carlson in his ability to troubleshoot and explain how things worked. I guess that is just one of several reason I enjoy your videos. You give great detail and are very methodical. No doubt the younger folks and even older folks like me learn a considerable amount from your videos. There are very few if any who teach how to troubleshoot vacuum tube circuits today. Thank you.

@jimparr01Utube Жыл бұрын

Thanks a bunch Mr. Carlson. Having been around at the dawn of the transistor age as a teenager but also doing lots of vacuum tube radio and TV repairs after school, I truly appreciate your rigorous and back-checking diagnostic procedures. Lots of relaxing fun watching you do your thing. Hoping to get my hands useful again shortly restoring about 10 ancient (pre- 1960's) radios and radiograms - all vacuum tube stuff. Can't wait! Something to do as retired, 71 year old, electronics design engineer.

@SkyWire88 2 жыл бұрын

Wow! Guess I'm flabbergasted that a resister could cause an internal noise problem like you have found with the Heathkit T-3. But, there it is. Well done.

@dave-d 3 ай бұрын

Class act mate! Finds the spooky resistor and feeds it to the tester as desert. You crack me up sometimes. Love your work. Keep it coming.

@harrystevens3885 7 жыл бұрын

I came on here 1hr 22 mins ago to watch a Meatloaf video but clicked on your channel and again just fantastic,never a wasted word is the way I describe your videos and you pass your knowledge on to other people better then anybody I have ever come across.Fantastic work.

@MrCarlsonsLab 7 жыл бұрын

Thanks for your kind comment Harry!

@festinger3 5 жыл бұрын

Meatloaf is not for listening to, it's for eating. Musical taste is a fickle thing I guess.

@lavejim11 8 жыл бұрын

These 1629 eye tubes intrigue me...need to do a little research on how they work. Love your vintage test equipment vids. Once upon a time, I put together a few Heathkit test equipment kits, but over the years I lost track of them. I want to put together another vintage bench like you are. Thanks for the videos!!

@wesleymatthews137 2 жыл бұрын

Brilliant timing. I was cleaning that pot last night AND my audio is crackling too! Where’s my soldering iron and parts bin!! Man, I love this channel…and this hobby! Thank you.

@MrCarlsonsLab 2 жыл бұрын

Thanks for your kind feedback Wesley!

@chriscunningham6362 5 жыл бұрын

My bench looks as if it came out of the 1940's. I restore vintage tube radios and amps and other vintage electronics using all the test gear from the same era. When I sit down at my bench to work (play) it's as if I've been transported back in time to a 1940's radio repair shop. I find it very gratifying as well as escapist. It's a hobby I've done for nearly 40 years and still love it, as well as accumulating a collection of wonderful old radios. Nothing sounds like tubes, even in AM.

@MrCarlsonsLab 5 жыл бұрын

Thanks for taking the time to write Chris!

@JugSouthgate 4 жыл бұрын

The reason Heathkit used unusual tubes in their 1950s kits (particularly test equipment) is because they were WW2 surplus and Heathkit got them for almost nothing. The 12C8, 12SH7, 12A6 and 1629 were common WW2 surplus that weren't used in "civilian" electronics so there was little demand for them, and Heathkit got amazing bargains on carloads of them. As they used up their supply of WW2 tubes, they gradually changed over to more-common types. The 1629 is a 6E5 with an octal base and 12.6 volt heater. It was used in the SCR-274N (ARC-5) transmitters. EXCELLENT video!

@JennyEverywhere 8 жыл бұрын

Mr. Carlson, I continue to adore your videos. I'm understanding more about these circuits than I ever have before! Wonderful!

@dufusk 8 жыл бұрын

Your level of knowledge and the ease at which you explain your troubleshooting process boggles the mind. Keep up the excellent, excellent work.

@MrCarlsonsLab 8 жыл бұрын

Thank you!

@VintageElectronicsGeek 8 жыл бұрын

I second this statement! Looking forward to the signal tracer! Can you also do a function generator! Thanks!

@jameshicks6753 2 ай бұрын

Take my breath away?? This one of the most educational thing ever! 😮Thanks

@kdegru1080 7 жыл бұрын

I basically was taught electronics as a child by building Heathkits, Eico kits and Knight kits, et al,. I always read over and over again the engineer's circuit description notes as to how the circuit worked until I could begin to comprehend them. This lead to a lifetime career of over 45 years and still continuing as a broadcast tv maintenance technician. Your educational videos are really top notch and so much better than the Jam Handy Organisation videos or those dry government instructional videos I was forced to endure in school. Your theory explanations are geared to practicality and would be most welcome to newbies trying to learn about electronics. To this day I always get a thrill from opening and restoring a piece of antique vacuum tube electronic gear to give it useful life again while at the same time I can relive a very happy childhood in that process.

@MrCarlsonsLab 7 жыл бұрын

Great! Thanks for taking the time to write!

@towerman75 Жыл бұрын

Still amazed at your knowledge and expertise. Keep up the good work, and remember that I am a friend when your species takes over the world.

@randallculp2414 3 жыл бұрын

I wish I had this exceptional man looking over my shoulder as a teacher and I’m in my 60s trying to work on old equipment. Amazing man. Thanks for your helpful and pleasant demeanour.

@michaelj.mansell8235 3 жыл бұрын

I am 65 as well, continuing to work on my hobby (hobby (#5) electronics,) now starting a more concentrated effort towads a major focus on Electronics & Amateur radio 📻. I have dabbled in electronics since approx 1966, I had parent's that were either too trustworthy or totally ignorant towards the dangers of "high voltage" in 📺 's! When I was approx 12 years of age I got to close to the high voltage transformer for the crt and was thrown clear across my bedroom. I didn't learn much, as all I did was get up, brushed out any lingering cob webs, walked back to my exploration adventure of a newly acquired TV set. Since that time l attempted to learn electronics on my own with mixed results! I have shocked myself a few times but never to the Olympic Games level of Manitoba puddle jumping adventures. There is a lot we can learn from this and so many more great teachers one can find on KZfaq. Between all of my great books available, the internet and KZfaq instructional videos, an individual can learn a lot, have fun and help the environment out.

@mrdouble 8 жыл бұрын

My biggest bring home with this video was the noisy resistor. I have read about and performed calculations for resistor noise but nothing to bring it out of the theoretical. Mind blown. Thank you

@BruceNitroxpro 4 жыл бұрын

OK, OK... I'll admit I didn't believe that Heathkit would miss-design a bias level which would present a problem. I was DEAD wrong, as Paul pointed out. I could have fixed the problem, had I correctly spotted the plate voltage disparity. Geeze... it takes someone with a LITTLE more trouble shooting time than mine to spot something which was so obvious to him. Nice job. GREAT job, in fact. .

@stevefoudray487 8 жыл бұрын

My shop looks forward to your videos, we all have different backgrounds and levels of experience. Electronic repair is part of what we do. Suddenly BK, HP, Agilent, Stanford, and even Heathkit is showing up on our benches for fun experiments and things we can do for our customers. Keep up the great videos!

@MrCarlsonsLab 8 жыл бұрын

Glad you guys are enjoying Steve.

@iamhe999 5 жыл бұрын

Excellent trouble shooting, and demonstration of noisey resister..... keep these videos coming, this is your great legacy..

@CharlesM-dp4xe 4 жыл бұрын

OK, it's a little late for comments at this stage but here it goes anyway. I grew up with Heath kits in the boy scouts radio clubs in the 50s and 60s they were considered as fairly valid tools for learning and there certainly were some flaws in engineering. I always wondered if some of those flaws were intentional. Look at it this way ... If you were motivated not to accept everything at a complete and finite face value, you might want to find the seat of an issue and discover its remedy by simple experimental techniques. It would certainly teach you something in the process. Its been 50 to 60 years and I still love doing these things. These videos are very valuable and I am still learning new things every day. Thank you for all you do !

@rib180 7 жыл бұрын

Amazing! I would have said the noise was caused by an old audio gain potentiometer and lived with it. Your design modification stopped the potentiometer crackling noise and stopped unnecessary plate current.

@ZeedijkMike 6 жыл бұрын

Probably the best troubleshooting / repair video I have seen for ages. You are so clear and and easy to understand. I like that even though you are doing - with my knowledge - a quite advanced repair, you still explain the simple steps too. I found the noisy resistor very interesting. I have heard that they exist, but never seen it demonstrate and with such a extreme result.

@beakytwitch7905 Жыл бұрын

Wow, today I learned the purpose of grid leak resistors, about noisy resistors and how to spot 'em, and about the signal tracers too. Much enjoyed watching. Thank you! :-)

@Joejoe-eo6yz 8 жыл бұрын

Paul another great video. I really like the way you describe the problem, explain the theory of the circuit and then show how you find the defective component. I have learned a great deal watching your videos. I hope you have a video showing us how you use this signal tracer to repair and antique radio.Thanks again for another great video.

@THOMMGB 8 жыл бұрын

Thank you very much for very thoroughly showing how all the controls on a signal tracer work. I especially liked the troubleshooting and repair/modification as well. I'd love to see you showing how to actually use a signal tracer in a radio repair. A lot of these units seem to come without probes. If you'd show in a little more detail how to make up a probe, that would be great! Regards, Tom

@MrCarlsonsLab 8 жыл бұрын

Thanks for your input Tom!

@LordOuzin 8 жыл бұрын

I'm not an engineer by trade, actually I'm a paramedic. I love these videos, as I've always had an interest in IC/EE/RF since a young age. My father is an EE by degree and trade. Keep up the great videos, I love them.

@stephenmoore2754 8 жыл бұрын

I should have sent this along earlier. The signal tracer looks like new. What a find! This is another great video. I grew up when tubes were at the end of their golden era, and my formal education was all solid state, but I keep gravitating back to the tube devices. You sure do them up right! Thanks for sharing your knowledge and I am looking forward to more in your series.

@AnalogElectronicsGent 3 ай бұрын

Awesome Video: excellent circuit theory presented and I love the modifications and how you discovered the noisy component (resistor). The demonstration on how to use all of the functions of this signal tracer is admirable.

@SteveGunnfl 8 жыл бұрын

I was brought up in the days of transistors and never really trained in tube technology, so they were somewhat mysterious hot fizzly dangerous high voltage thingies.. videos like this make them much less mysterious and I could understand the schematic - so thank you..

@BillyLapTop 8 жыл бұрын

Wonderful episode. Could not tear myself away from it and watch the neighbors fire works display. Thank you for your great videos OM.

@MrCarlsonsLab 8 жыл бұрын

Thanks Billy!

@edmclaughlin4923 3 жыл бұрын

Paul, I would have never caught that potentiometer problem. I would have been spraying deoxit in the original one until the cows came home. Excellent video Sir. Thank you!

@TheRadioShop 8 жыл бұрын

Paul that was brilliant! I loved the way you explained the circuit and then did the mod to calm the voltage drop. But the noise troubleshooting was just out of this world. Big thumbs up my friend. You out did yourself on this one. I have an Heathkit IT-12. It quit on my last year. Man I miss it. Eye tube went bad. Will enjoy the next video on the SG and the series to follow. Working through a new series myself on the FT-101. I have 5 of them....Keep up the great work my friend.

@MrCarlsonsLab 8 жыл бұрын

Thanks Buddy! Have a great 4th. Our 1st went well up here.

@ActivateMission2ThisTimeline 5 жыл бұрын

You should create some troubleshooting tips and tricks vids for tube, transistor, IC, power supplies and computers. You could pull the great parts of many videos together to create this. You should teach at the tech school or local college. You are the best I've seen in 50 years.

@jwl9286 6 жыл бұрын

Mr. Carlson, this is my second viewing of this video. It's even better the second time around. The biasing description is so clear. The 12av6 in the all American five also has the cathode grounded. I've been studying this grid bias phenomenon and this video explains it so clearly. Thanks, you do a fabulous job.

@MrCarlsonsLab 6 жыл бұрын

You're Welcome!

@alecjahn 8 жыл бұрын

I am so glad that you do these videos. I don't think there's anyone on the 'tube that does similar teardown+repair/mods on interesting equipment like this, let alone your truly impeccable teaching ability and delivery. Once again I thank you for another quality video! I learn so much on every single one, which is priceless to say the least.

@MrCarlsonsLab 8 жыл бұрын

Thanks for your kind comment alecjahn!

@sniperneil53 8 жыл бұрын

Ditto

@freddiemortos8519 8 жыл бұрын

Hi Paul, You're really a very good not only in troubleshooting but teaching as well. You have a very deep understanding about all the circuit you're working on. I really enjoy watching all your videos coz I learned a lot from it. Keep it up. Gobless!!!

@MrCarlsonsLab 8 жыл бұрын

Thanks for your kind words!

@bucyruserie1211 8 жыл бұрын

Hi Paul, I really enjoyed watching you diagnose and repair this Signal Tracer.... You always explain your methodology so that even I understand what and why your doing it (very helpful for improving my own diagnosing skills) .. Great video as always!! Thanks for sharing, Tom

@theonewease 8 жыл бұрын

These videos on vintage test gear are awesome and always with the best presentation and quality! Please keep them coming Paul! Many Thanks!

@ronfrost7587 8 жыл бұрын

I really love watching your videos. They are very informative and the vocal commentary is not rushed but at the same time, the level of information is very deep. Keep up the good work.

@johnfindley1188 3 жыл бұрын

Excellent Job. I just purchased a Heathkit T-3 signal tracer. Thanks for your great explanation of how the unit works and your troubleshooting procedures. John

@parsifal40002 3 жыл бұрын

Mr. Carlson, I really enjoy watching your videos even though I don't understand much , just barely! LOL. I'm fascinated by electronics. But I was not good at mathematics and electrical theory. Still I enjoy watching!! Thank you!!

@MrCarlsonsLab 3 жыл бұрын

You're welcome Steven.

@waynecarlson3736 7 жыл бұрын

Paul great to bring the older equipment back to life. I now have a Jackson model 106 rf signal generator to bring to life again The case is just pristine

@MrCarlsonsLab 7 жыл бұрын

Hey, that's a nice looking signal gen with the white "chicken head" knobs!

@waynecarlson3736 7 жыл бұрын

Yes it does have white chicken heads and looks brand new, not a scratch or mark at all. Bought on ebay and I now feel that I robbed the seller.

@helenbulmer5426 3 жыл бұрын

Paul's unbelievably clever omg I have restored radios and hammond organs for years but know NOTHING compared to Mr carlson. Your videos sir are amazing in every way and I watch your productions day and night. You need a medal for your monumental work!!!

@MrCarlsonsLab 3 жыл бұрын

Thank You for your very kind comment Helen!

@redemptusrenatus5336 8 жыл бұрын

Love these videos. Definitely looking forward to the whole series on troubleshooting and repairing devices using this equipment. Great work and glad that you put in the time not only to do it but to do it well. Thanks for sharing with everybody.

@wildrootsfarm1975 7 жыл бұрын

Thank you for taking the time to put this video together! The troubleshoot was most amazing. I enjoy troubleshooting, but never had seen it done at this depth. I have so much to learn. I look forward to watching more!

@RevelationNowatHand 5 жыл бұрын

I've now watched most of your videos here and I think out of all of them I've enjoyed watching this one most. Of course they've all been really very good and I can honestly say I would have loved to have had this kind of access to your knowledge and instruction back in the days when I worked in electronics repair. Thank you, Paul, for sharing! David

@coffdrops69 8 жыл бұрын

Another fascinating video and a joy to watch. Your thought processes and logical approach to troubleshooting make it easy to understand and follow along, as well as learning a few things along the way. Thank you for devoting the time to these videos and I'm already looking forward to the next one.

@sebokaz 6 жыл бұрын

Thanks for the great video! Amazed with how few subscribers you have, your channel deserves times and times more!

@CharlieTechie 8 жыл бұрын

Well Paul, you did it again. Fantastic video. Learned a lot, picked up more tube theory I had forgotten over the years, and learned more troubleshoot tips. Can't wait for the new series. I know it takes time to put the videos together, and I thank you so much for taking that time and sharing with us.

@ibrahimkocaalioglu 5 ай бұрын

You are amazing. Fixing bad design is marvelous. Active elements should be always properly biased !!!

@MrUbiquitousTech 7 жыл бұрын

Great episode! Really nice job on that tracer! You outdid the factory with your mods. That's going to be a great series, fixing up other equipment using your restored vintage gear!

@rfburns5601 8 жыл бұрын

I thought that the pot had a bad spot, tin whiskers, or leaky coupling cap on the wiper. I wasn't paying close attention when you went through the schematic; I didn't realize the pot was DC coupled. I can't believe the engineers at Heathkit did that! Cool video. Sometimes, I would parallel a suspect noisy resistor with an electrolytic cap to check for noise. That method is not always practical, and can cause damage if you're not careful. The outside techs would use a meter called a "Sidekick" that would put a couple of hundred volts on the cable to check it for noise. I hadn't seen a signal tracer with that function built in. Neat!

@Discretesignals 8 жыл бұрын

I love your videos! I'm a mechanic, but find electronics so exciting. Maybe i missed my calling. I been watching your videos for quite some time, so I subscribed to your channel finally. Thank you for sharing your love of electronics.

@user-uv4xe3cq2y 6 жыл бұрын

Doug of Philadelphia says it well. Thanks for all you make available for us to view and absorb.

@brunofonseca9686 8 жыл бұрын

It's just out of this world your approach on electronics videos. A lot of knowledge. Congrats Mr Carlson.

@injoelsgarage3934 7 жыл бұрын

Mr. Carlson, Thank you for another awesome video, your attention to detail and explanation of trouble shooting steps in this project are outstanding. You have helped me out tremendously, the light has gone on for me, as I now see how useful and import to have a properly working signal tracer is. Noise is bad, and that's why we can test for it. So cool. Thanks again for your time and sharing with us all. Happy holidays to you and yours! Joel

@MrCarlsonsLab 7 жыл бұрын

Thanks Joel! You will really like my next video. It should be up in a day or so. Have a Merry Christmas!

@MikePerigo 7 жыл бұрын

Thanks for another excellent video and for bringing back the memories of Real Electronics with Real Voltages. As an old timer I found it to be the perfect level of detail and explanation of Real Faultfinding.

@larrymccabe7888 8 жыл бұрын

Paul... Another exc video.. Have watched all of yours multiple times. The diagnostic approach is especially valuable.. Love the tube gear as well as the solid state stuff. You hve given me the incentive to repair my Hamfest treasures sitting in the garage Pls keep them coming.. 73's Larry

@robertcalkjr.8325 8 жыл бұрын

Nice job. Thanks Paul. It's nice to see old equipment still working.

@dweishome 7 жыл бұрын

Great course on general trouble shooting Mr Carlson. I just bought a Heathkit T4 tracer, so this should really help me out. Thanks much. I just stumbled on this set of videos. I will be back for more! Dave in Phoenix.

@damianvieira 8 жыл бұрын

Really amazing! Even more amazing is how simple you make troubleshooting and repairing those devices. Thanks A LOT for your time and effort doing this videos. I always learn a lot from you. Cheers from Brazil!

@johncunningham5435 8 жыл бұрын

Excellent Paul; a great demonstration in the modification of the unit and tracking down the noisy resistor that can be difficult to locate in some situations. "Well Done"

@netlogic1ify Жыл бұрын

Wow.. You are really brilliant. You are the best electrician man I ever seen. The knowledge that you have is more like a professor on this branch. You are not only know what you are doing :) but you're also know what mistakes the designers make and know how to fix that. I'm really impressed. You are a good teacher and I'm really glad to be a part of your group. Bravo! You really deserve the positive feedback and the people that adore you :)

@noelranasinghe3 3 жыл бұрын

Gained lot of knowledge today never knew a resistor creates that kind of distortion to a circuit, thanks for sharing your knowledge with us

@MrCarlsonsLab 3 жыл бұрын

Glad to help Noel!

@dnegrichjr 8 жыл бұрын

Impressive! I love that you explained the equipment and it's operational theory and then proceded to troubleshoot while explaining logical steps to isolating each issue. Sir, the video is superior! Great job! Thank you for sharing you knowledge. I learned a lot.

@MrCarlsonsLab 8 жыл бұрын

Thanks!

@richardbrown9522 7 жыл бұрын

Excellent! Really appreciate you showing the full troubleshooting process. More please when you have the time.

@cdrive5757 2 жыл бұрын

Paul, thank you for yet another exceptional video. I'm 76 and my dad was building HeathKits in the 50's, while I was building them starting at about 1967. Back in those days HeathKit offered their products both as Kits and "Factory Wired & Assembled". My memory of those days remember a higher resale value of the factory wired versions. Not surprising because many kit builders had awful wiring and soldering skills. I have a friend and old coworker who's motto is "The bigger the glob, the better the job"! I would tell him I've seen rookie welders with better joints! 😂 Wakodahatchee Chris

@hyperchannel4048 5 жыл бұрын

Every single video is a large collection of knowledge for the practical application of electronics knowledge ! Still keep safety first and stay healthy in the New Year too ! Many thanks for so much tips and informations about electronics !

@Alpha1545 8 жыл бұрын

Outstanding! I forgot how a carbon resistor can get noisy. I heard the current flowing thru the speaker and knew the slight hum was acceptable the way you were demonstrating. My guess was going to be a unsoldered wiring point or cold solder joint. Great find with the resistor. Thanks for the video

@JerryEricsson 3 жыл бұрын

Very cool, I am still watching your old videos because they contain so much knowledge and deserve to be revisited from time to time. I too would have been beating that poor rheostat to death trying to get the crackle out of it! I never realized that a simple resistor could go noisy like that and emulate a bad control! Thanks a million, I am still paying to go for the good stuff, well worth the money, you are the only fellow I have used patreon with, there are others I have considered but their stuff is not up to the high quality and actual college level stuff.

@MrCarlsonsLab 3 жыл бұрын

Thanks for your kind feedback Jerry!

@TRXLab 8 жыл бұрын

super cool restoration, troubleshooting and repair Paul!. Love this old lab gear. Take care 73

@MrCarlsonsLab 8 жыл бұрын

Thanks Peter!

@cybersholt 8 жыл бұрын

Excellent video Mr. Carlson, the quality and depth is superb. Keep up the great work!

@robertjacko1718 8 жыл бұрын

Enjoyed the signal tracer video and in particular your comments such as athe transformer location and the "why" of its orientation and what effect might result were it mounted differently.Bob

@89.8kiwifm9 7 жыл бұрын

Another excellent video, detailed and informative. I'm picking up a lot of useful tips in all of your productions and I'm very grateful that you go into detail and explain what is going on with each stage.

@MrCarlsonsLab 7 жыл бұрын

Thanks for your kind comment!

@GrandsonofKong 8 жыл бұрын

Awesome restoration video..again! Whenever my wife mentions that I might have too much electronic gear..I show her a clip of your lab!!

@larryk4mu240 8 жыл бұрын

Hi Paul, Another great video! This is, and going to be, a great series of videos. Thanks for all the effort you put into each one. Going to be in the mid 90’s Fahrenheit here today so it will be a good day to stay indoors and watch some of your previous videos again. 73

@jwl9286 8 жыл бұрын

Great Video, I just had stop and appaud your statement about the problem not only giving a chance to continue troubleshooting but have fun as well. This is wonderful.

@MrCarlsonsLab 8 жыл бұрын

Thanks!

@DennisMurphey 5 жыл бұрын

yes, well its clear to me you are one smart cookie, the best part is you can explain what you find and why you are doing what you do to make it better. Sharing your gifts is the best part of the videos. Thank You again and again, Great effort and result. D

@DennisMurphey 5 жыл бұрын

If you can make the boards for us, i would love to make your Super Probe and Capacitor tester. I am getting an old Eico 147 you said the probe could be used with it, but had not changed to BNC connector.

@DennisMurphey 5 жыл бұрын

My Eico 147 arrived today but it has NO Tubes inside. Good price but now i need all 5 tubes, Green Eye Too. Are there upgrades to this i should consider too. D

@Giblet535 6 жыл бұрын

Spectacular troubleshooting. A modern day whodunnit starring a huge cast of angry pixies, with Mr. Carlson as The Scientist.

@neillawlor7701 4 жыл бұрын

Brings back lots of memories. ( Tubes ) You are a first class teacher the way you explain circuits etc.

@leesanders6490 8 жыл бұрын

Thanks Paul. These videos are a big help. I'm looking forward the to the series. Great work.

@jimadams2473 8 жыл бұрын

Another excellent video. Very detailed and sequenced. I am humbled at how well you know electronics repair. My success rate is around 50/50 and i won't tackle anything with surface mount components. Keep up the great work!!!! Thanks

@Pwaak 8 жыл бұрын

I greatly appreciate the T3 video and explanation! Looking forward to this series on the equipment and it's usage! Thank You!

@denouch358 8 жыл бұрын

Paul, another great video, thanks. I have an Eico 147A tracer and use it very often. I'm looking forward to your series on using the vintage equipment to troubleshoot tube devices.

@EsotericArctos 4 жыл бұрын

I am watching all your videos from start to finish and I have to sat you explain things better than anyone else on KZfaq. I wonder how far we really have advanced since the 1930's though. Yes, computers are smaller and can run faster, but making things smaller and faster comes at the expense of accuracy and knowledge. More people knew how to handle things properly 90 years ago to what they do now.

@mikesradiorepair 8 жыл бұрын

Great job on tracking down the noise. That can be a bugger some times. Nice to see I'm not the only person that installs modern X1 Y2 safety caps. In a lot of gear especially radios I work on they used standard ceramic caps and I don't have enough fingers and toes to count how many of them I have seen exploded. I always replace them no matter what they look like. Especially across the line caps. Their on 24/7 as long as the equipment is plugged in, hardest working part there is. If you ever run across a Paco Z80 cheap grab it. I love mine. In addition to the variable gain pot it has a switch for multiplier of X1-X10-X100-X1000. The scope/VTVM output is also very handy.

@rolfdieterklein 8 ай бұрын

excellent video, not only repair but also enhanced witg the modification

@coilsmoke2286 7 жыл бұрын

Wow And THANX...! That 'Microphonic' and noisy resistor is a first for me. (Shades of the old carbon microphones) Got problems, hit it, bang on it, wiggle it. I love dumb luck testing when it works. That often does help find faults in things like pinball machines and appliances.This makes me appreciate the value of all low noise passive components too.

@willwasson8113 8 жыл бұрын

Thanks for the excellent as usual video. Looking forward to the rest of the series.

@DonDegidio 8 жыл бұрын

Paul That Heathkit sure brings back some old memories. Very good video. You and the family have a safe 4th. WB3BJU

@stargazer7644 8 жыл бұрын

Lol, not much worry about a safe 4th in Canada.

@MrCarlsonsLab 8 жыл бұрын

Thanks Donald! I did have a safe 1st!

@chakathewolf 8 жыл бұрын

I am really enjoying this series of videos. Looking forward to more.

@bergarteric5713 5 жыл бұрын

Hello Mr I love your pedagogy and you are a very good teacher for me !!! Thanks for all , your time and your knowlege ... please don't stop never !!! long life for you and your wonderful lab Eric from France .

@VintageLabSilvioPinheiro 8 жыл бұрын

Thank you for sharing another great lesson. I would never find that a simple resistor could cause so many problems. 73

@oldschoolSlyfan 7 жыл бұрын

I really appreciate the way you teach and explain. Thank you again.

@jerryuhte1284 2 жыл бұрын

Great info and video , just so happened i finally needed to use the sig tracer , however didnt know it worked ! it and the matching Sig generator was purchased at Dayton Hamfest years ago ! Thanks for all the great work , good luck !

@djfrank59 8 жыл бұрын

Another great video! Since I work on a lot of tube amplifiers, I run across noisy resistors all the time. Some worse than others. I have 2 signal tracers now, I got an extra one to troubleshoot my first one :) Most of the time, I grab a wooden chopstick (compliments of my local Chinese restaurant) and poke resistors until I find the noisy one. However, the poke & tap method doesn't always reveal the noisy resistor. That's where the signal tracer comes in handy. Great video, keep 'em coming! Frank Ferraro--Audio Craft Electronics.