Restoration Inspection - How Well Did They Do?
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- čas přidán 12. 10. 2021
- Let's inspect another technicians restoration! This is a Stromberg Carlson radio receiver from 1949. Grab a coffee, and let's get started! Click the SHOW MORE tab below for links.
To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: / mrcarlsonslab
#learnelectronics #Restoration #MrCarlson - Věda a technologie
![HeathBuilt Voltage Reference Source [Restoration]](http://i.ytimg.com/vi/2LlOGOu8Dlg/mqdefault.jpg)
To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: www.patreon.com/MrCarlsonsLab
I figured you would have aligned that in this video. Question: I didn’t notice, with the chassis pulled, was there dial alignment marks on that brown back plate?
I personally think you should restore it and get it fixed up properly.
I'd like to send you a new solder station from Metcal. If you like to have it please let me know.
19:56 for someone who doesn't want those components to move around, you sure are touching and wiggling each and every one of them a lot
Can you make my families old philo go again. And my dad's ancient 6 vote car battery ran house cabinet am radio. It's from like maybe the 1920 or thirties from rural Montana ranch country where electrical power lines did not exist.
Mr Carlson, After seeing all of your videos I know that you will not let this set leave your bench without bringing it back to factory standards and upgrading it to be a higher safety standard.
That's why I love watching his channel. His videos are basically ASMR for budding radio enthusiasts like me. I have even dozed off watching some of his videos, delighted by the knowledge that the radios he has featured have or will come back in many ways better than they were before.
Yes, please complete the alignment with a video. Although I've done restoration alignments quite a few times now, it's always a privilege to see this work done by a true master - I have so much still to learn and I know the radio will be better than when it left the factory!
I restored this same model radio about 10 years ago! Fantastic! I still have it on my piano. I definitely have to go back and evaluate my work after watching this. Thank you!
I restored this exact radio about 3 years ago with good results but now am tempted to go back in and check some of the resistor values that I may have assumed were ok. One thing I've learned with these old radios after watching your videos is .......never assume .
I have been doing electronic work for 45 years, and recapping is always a good idea. a cap that is leaking D.C. will cause tube destruction. I did check resistor values and replace only the ones that had drifted out of tolerance, the problem with that idea is the radio is back in your hands a year later due to another resistor that "FADED AWAY", so now I replace all resistors that are carbon composition.
@@gregoryclemen1870 what resistors do you use? I prefer metal film ones.
@@christophermarshall5765 , I still use carbon composition resistors, I also use carbon film, and metal film resistors( these resistors will open up like fuses if too much current is passed through them, and look perfectly good)
The "never assume" can also be extended to "never trust the silk screening" on PCBs. Always verify, as you'll inevitably find out the hard way if not, that the silk screening shows the negative lead of some electrolytic cap going one way and when you apply power: POP. Always verify!
These videos are incredible. You were the one who inspired me to start fixing radios, and now I have a zenith clock radio that wakes me up every morning.
You are an excellent teacher. Many You Tube tutorials feature hosts that really know their stuff but can't explain it to others. You obviously "know your stuff" and have the gift of being able to explain it as well. Thank you very much for these videos.
You are most welcome Rick!
Absolutely do the alignment (easy to state that from my kitchen table while eating a bagel and drinking my coffee).
As long it doesn't have old SIEMENS IF filters in there .. I just restored a radio with them and they are a plain PITA.
They don't have any screws, they are just two plastic "straws" inside of each other, you shift the inner one until it is aligned (VERY finicky) and then "weld" them together with a soldering iron. To realign, you are supposed to destroy the inner one (which has the ferrite) by drilling it out where it is welded and then replace it with a new one.
The radios came with a few replacement "alignment straws" (Abgleichhalme), but they are usually long lost. So you have to carefully free the old ones and make do. I wanted to strangle the guy who came up with this ...
Hi Paul - Previous Geezer did a clean jobbie in there, change-out the line cap & peak-up the alignment & dial tracking. Sweet little AC-DC unit - Thanks for the video there. Best regards, Tony in S-Africa...
Do the restore. I appreciate your persistence to accuracy.
Yeah...what KO2FJB said! WB4RHA
Paul, by all means, please do your usual thorough restoration, that is, replace the out of tolerance components, add a fuse, align the radio and restore the case to its former showroom glory. I'm still learning the ropes so all your resto videos are very welcome learning aids for me. Thanks!
Such a fine radio, Paul. Of course we want to see the last miles of the road. i bet you will do it, too ;-) Nobody switches off Freddy Mercury at "We are the champions, my " ;-)
It’s fun to see any restoration videos he makes because you get all the details and always well explained in the process. Irregardless of whether you get it or are just curious, you will learn something. That’s a win win!
It's always amazing what a good antenna can do for any receiving equipment at any frequency.
Just watched Shango066 test out some vintage CB radios. Love see what to happens if you connect a CB to that new antenna!
Paul, as long as either the Customer will pay for the work needed _OR_ you want to make this as more content for your channel, please go all out with tuning/aligning this radio, along with implementing the needed & recommended safety modifications, and refinishing the Bakelite body and straightening the clear plate, along with removing the excess glue. I'm sure that _your_ standards make you want to make it as perfect as you can, but either the Customer or CZcams must pay for your time & efforts.
I never get tired of complete alignment! this radio has a few interesting issues to get resolved but none of them are as interesting as the alignment tracking--always a cool project. Thanks in advance...
Yes Paul give it some goodness, I also recommend anyone to join on the patreon, Paul's even taught me some New tricks, along with different ways of actually doing the job the proper effective way .
Stromberg-Carlson! Never heard of that brand, but it has your name on it so it should be good!😊
Hey Mr Carlson love your work...i have been watching your videos and I learn a lot... Watching you from Trinidad and Tobago 🇹🇹🇹🇹in the Caribbean...
Thanks for watching Bevon!
I love all of your restorations, but I feel like the real interest in this one particular radio, is the fact that it was designed with the help of a friend, and your Grandfather I.E., Carlson. HiHi
Please do the alignment. One of the things I like is the details you explain in a easy simple way for people to understand. Great work.
I for one, will never turn down a alignment video from Mr. Carlson...of course! Also, this is for me the fascinating part of your trade, its the one that I have been researching and gearing up for as a hobby. I will never be in your caliber, but I would love to soak up whatever knowledge that is coming from you!
PERFECT timing Paul! I recently received an RCA Victor 8-x-541 in very good cosmetic condition. Just this week I went through and came up with my parts list and ordered my first round of them. I did not power it up as I found a completely dead B+ supply cap and a bad Detector/AF/AVC tube. As always, you gave me a few things to consider! Looking forward to your sharing more on the Stromberg Carlson and other vintage gear.
Mr Carlson's Sir nice Explain About Radio Repair. Thanking You sir.
You're welcome Nath!
Please realign the set. 65 years ago, when I was working on radios like this, I would tweak the screws to get maximum sound out without knowing what the the right way was. I learn a lot by watching you do it while explaining the reason for the adjustment. Many thanks.
Great one Paul. I love this tech videos. You are great. I was hoping for a complete episode....maybe the next one 😊. Thanks and peace 🌈
Another great carefully described video answering questions I've had since I started fooling with this wonderful avocation in the 1950s and a kid! Thank you again and I'm looking forward to seeing how you "unstretch" the tracking of the dial.
You're very welcome Ken!
Thank you Paul! Like always, I learned a lot.
Paul, thanks for featuring this radio. I have one like it in my collection that needs to be restored, and I appreciated a preview of what work I may be undertaking.
Nice radio Paul, odd that the last tech did a reasonable job with caps and resistors but apparently didn't align it. You know if you want to sleep at night you will fix a few things and align it 😉🙂
LOL, thanks for stopping by Dave!
Restore!!!! I am an artist an architectural artist, I am fascinated not only by the inner workings of electronics but I appreciate your wealth of your knowledge in this area. It all sounds like Gobley goop to me LOL But I find it very interesting and intriguing….Listening to your program I think I know about 1% and I’m being generous of what you’re saying perhaps the rest of it will sink in but still you keep me entertained I enjoy your show
Yes Paul, please do your magic on it. That's a great radio.
I think it would be nice to explain to people, thank you for your help
I know a lot of people want to see the details on fixing this, but personally, I'd like to see you restore more test equipment. Preferable an old oscilloscope, maybe a big tektronix tube scope like a 555, with lots of discussion about the theory of the scope, the awesomeness of tektronix, and the uses of the various plugins.
Yes Definitely want to see more test equipment restorations
Thanks again Paul! I'd say go for it on the restore!
Carlson radio for Mr Carlson.
As I have the same radio .it's a no brainer Mr C lol Regards from over the pond
I used to work at the old Allen-Bradley. I spent 30 years there and started in 1979. I recall when I first started there they still had the old resistor machines that ran day and night. I can recall walking by those machines every now and then. Eventually they moved that part of their operation down to Texas, right at the Mexican boarder.
Thanks for sharing your story Daniel!
@@MrCarlsonsLab thanks. I happened to find your channel a few months back. When I was in high school I had my senior year of electronics cover tube technology. Cool to see someone like you so well versed in fixing old tube equipment. I always thought that tube radios sounded different than the newer transistor or even newer radios. Almost like tube radios sounded warmer (not even talking heat). One thing my one year of tubes in HS allowed me to do is fix the tube radio from my 1957 Thunderbird way back in the mid 80's. The hardest thing I had was finding a DC power supply capable of powering the radio up out of the car. Have you ever tackled an old AM car radio on the channel?
For long-term reliability the capacitors in those IF cans should have really been done. We know that style have chronic SMD and it's just a matter of time
Thanks for your input, and stopping by Shango!
I KNOW THE PAIN( THE TERRIBLE PAIN), what really sucks about it, is getting to them, digging them out( without damaging the coils), and then tacking in var. caps to find out what value was used( not found on print), and then putting in the correct value cap for pri./ sec. sides. well you knew that anyway, I stop in to see what your up to on a regular basis, just like radiotvphononut!!!!!!! have a great day!!!!!
@@gregoryclemen1870 if you carefully remove the wafers you can measure them fairly accurately. Some are impossible to remove without destroying them
@@MrCarlsonsLab Love your channel as well as Shango. What a contrast of him repairing old tv’s that have been in abandoned mining camps for 50+ years with bare essentials to you in your amazing lab/museum of top notch test equipment. Learned a great deal from you both, along with W2aew( Alan Wolke ) and Joe Smith, the master of DMM torture tests and re- engineering ones that didn’t survive to survive 10-12Kv transient spikes. Joe has swayed my purchase choices on many meters I own after watching his tests. So many talented people on here to learn from there isn’t much you can’t accomplish if you pay attention. Unfortunately there are a few hacks too that shouldn’t show people anything to do with lethal voltage.
@@shango066 , thanks for responding back!!!!, the "I.F." transformers that I have problems with are the ones that have the" LARGE RIVOT" in the center of the base, holding the caps together. years ago, when one went bad , I would go to the electronics store and buy new ones, that was 45 years ago!!!!. now "REPAIRING" them is the only way to go, and your repairing something that really was not designed to be repaired!!!!
Absolutely restore !!
I used to have that model radio. Loved it. Wish I still had it.
I always do a full alignment on any radio receiver or transmitter I work on. So long as you don't break tuning slugs (only once) it is pretty non-destructive ;-) Thanks for sharing. So my point is, yes, align it!
Master at work.. fun to watch and informative as well.
very interesting mr carlson thank you
You are very welcome
Paul, please complete the build. I learn so much from your videos!
The job was done reasonably well by the looks, a fuse inline and a properly rated across-line cap should at least be added though. And alignment by the master tech ought to be obligatory because its always a pleasure to watch :-)
It could certainly use your magic touch! I wish I lived closer to you, I'd be one of your best customers!
Yes! We want to see the restoration. Thanks.
Hot damn! After I started watching your videos I started to notice when a tube radio would show up at thrift stores. The second such radio I bought was this model of Stromberg Carlson. I blame you for this. I would love to see this restoration spruced up.
Yes, by all means, please let us enjoy a further restore and fully align this little jewel.
Gotta love the Robertson fasteners.
Thank you for making this video and letting it see me.
In the past, I've seen (and, I'm sure you have too) "restored" radios that were actually a butchered up hack job, with some of them being downright dangerous. In many cases, only enough was done to make the radio play weakly on the strongest local station with the volume wide open. It's for those reasons that I rarely buy restored electronics, unless I know who did the work. Even though there were some things that should have been done to this radio before you got it, I'm glad to see it wasn't a total "hack job."
Thanks for stopping by, and taking the time to write!
Isn't exterior plastic restoration is the most important thing when talking about ancient tech?
@@ligametis for me that comes second, radio 1st
@@thomashowe855 who would still use it unironically? It might be nice as a decoration and then exterior look is the priority. Even non working but beautiful ones are probably worth more than working ones but rough looking.
I am new to this Channel and it looks so foreign if interior is prioritised.
@@ligametis It’s entirely possible to have a low power a.m. transmitter in your home that transmits to a vintage radio. If it looks nice but the radio part doesn’t work then it’s kind of pointless in that case. If all you want is an attractive object, then by all means polish the case and put it in a physical location and call it done. It depends on the point of having the radio, in my world having both the inside and the outside fixed is the best case.
Yes, align this please. Thanks for sharing Paul.
Changed it from Stromberg Carlson to a Carlson's high quality Radio 😃
Yes please do the alignment video always look forward to your videos Mr. Carlson
Tuning across the AM band = me driving at night. :-)
It needs the across the line capacitor replaced with a safety type one and do a full alignment.
Funny thing is that they did use X2 rated 47nF caps as coupling caps ;).
When did the line safety cap get paid more attention? Before the internet brought this to my attention the most acceptable thing to do was to use the correct value in a 1kv mylar cap of good quality. Sprague, Mallory etc. Reasoning is in US line voltage is around 340 v pk to pk. So was best to go to 1 kv. Now that I know of course is to use the right part.
I think that's good enough. Nice job.
i agree, there are many other videos showing alignment, this video in itself was outstanding.
Keep going with this Mr. C.!!!
yup,,, I would enjoy watching the re-alignment of the Stromberg Carlson radio,, :-)
Did you make another vid restoring this radio? Hope so. Will search for it. As a side note...My dad was born in 1921, & he passed in '87. He was an electronics engineer who loved vacuum tube circuits. Among other things, he designed/built EEG & EKG amplifiers for the USN. I remember he designed a very quiet, but powerful SS mic preamp & housed the power supply separately, outside of the preamp. Got watch him restore a couple of Altec mic preamp, one w/ a compressor. He would have loved your channel.
Dear Mr Carlson. When you ask the audience if we would like to see you do something then you can count us in. No need to ask really but I guess you need a headcount. Great video as usual. Steve, Cornwall, UK. ,⚡🔌🧑🔧💡
Yes please restore it again. I have the exact radio.
I remember when i was a boy if you walked into a Salvation Army resale store
you would found lots of old Table Top Tube Radios. I think the old tube radios seem to have a richer
more mellow sound compared to the new transistor models.
Absolutely
Yes Paul, complete alignment : )
Mr. Carlson, I definitely want to see you finish this out. It doesn't feel quite right for that radio to pass through your lab and go back out in the wild in less that "Mr. Carlson's best" condition. :)
Always restore, thanks keep them comming.
😎👍 Yes please, go for a restore.
It's a neat little radio that works well so I think that it deserves an IF tweak.
i have that same radio (the knobs are baklite brown). it works fine. excellent work.my tubes do not have a wire coil around it, like yours.
It might be nice to see this radio perfectly aligned.
Very nice, as always.
Paul, after being a Radio hobbyist, and restorer, for many years, I could not leave the radio as such. It would have a complete alignment and all the little things you found corrected, not only to make it safe, but also to satisfy not only yourself, but the customer.
Yes! Please align. It's 1/2 Mhz off at the low end of the band.
Paul,
That new FLUKE is a man-machine, isn't it? Thanks for the video, I enjoy all of your work. WIll you show us more about your new antenna?
Mr Carlson, appreciate your meticulous work and would definitely want to see the tracking correction. I have completely restored a Philco 42-322 with all new wires, caps, and even rewound the oscillator coil transformer. The radio tracking is way off, and came to a conclusion of mismatched capacitance of the oscillating section. So, hope to see your work.
Hi Paul,
From a service centre point of view, the repair to this radio is fairly satisfactory. The mains suppression capacitor (650 to 1kv d.c working) would have been acceptable prior to fifty years ago but capacitor technology has advance since those days. Like you say, it should be replaced with a XY rated type. However, if you was to perform a few higher level service requirements to this radio, for example, correcting the dial misalignment via the peak method, as well as showing how it can also be accomplished via the sweep method would be appreciated by a good number of viewers. I remember, as an apprentice, making similar alignment errors almost fifty years ago LOL.
Best regards, Phil
I agree you should do your restorations, especially, no, Essentially the safety aspects- the fuse and AC rated capacitor. Thanks for sharing.
Yes fix it again !
It really does deserve it !
Great video! I vote for restoration and realignment.
Stromberg-Carlson? Now it'll be two Carlsons :)
I'd definitely try aligning it, no matter if you make the episode publicly accessible or patron-only.
Oh, and very nice pointers on safety too. From my experience, I mostly had radios with power transformer on my bench, and I usually replaced the power cord with a 3-lead one (in a braid, so it looks really nice) and grounded the chassis. Good thing you have polarized plugs in the US; here in Poland (where CEE7/5 is used) we theoretically have a standard that the left contact should be live and the right one should be neutral, but it can't be counted on (it's not strictly enforced like in the UK), plus there's still millions of sockets with no ground contact where you can put the plug in either way. Same with Germany or the Netherlands - their Schuko (CEE7/3) standard allows the plug to be put in one way or another.
Love your videos!
Thank you!
If the previous tech is watching this, he could be doing lots of face palming, having the master of Electronics looking at his work.
Yes, Paul...Please tweak and peak this fine old Stromberg Carlson radio receiver. Regards!
Hey Mr. Carlson,
I had a neat radio in the 60's I was hoping you might be able to identify.
It was a table/portable transistor radio that was unique because it had push buttons.
Not like you normally see similar to a car radio.
This had three big preset buttons on top that were about 2" on each side.
I think they were chrome. There were three small radial dials on the back
to set the stations for the buttons.
I think it may have been a Grundig or Wollensak but I am not sure.
I remember it had a great sound.
Mr Carlson, I've learnt a world from your videos! I'm just now getting into tube radios. Theoretically at the moment, but I have a couple of projects I'm going to tackle. I guess I'm an intermediate level hobbyist in digital and other low voltage electronics, so I think I know what I'm doing when I know what I'm doing...
You always talk about polarised plugs, but I'd very much appreciate some tips for us who don't have those!
Another thing I'd like to see, if possible, is farm radios. 1.5 or 2 and about 60 or 90V DC. We have such a radio that was bought by my late grandfather when my dad was very young, and we're hoping to get at least some sound out of it.
I'll get it eventually, but it would be good to see a pro do it before I screw up... 😀
just be careful, the voltage potentials can be "LETHAL" , especially on tube radios that have power transformers on them. if you do not have polarised plugs , they are available at any hardware store. most old radios need new power cords anyway, finding a cord with a polarised plug on it is not too difficult to find. when the polarity is reversed on a tube radio, the chasis is "HOT"( 120 v.) the radio will play just fine, but can and will knock you on your "PO PO" ( unless the radio is powered by a power transformer)
@@gregoryclemen1870 What I meant, but didn't state clearly, is that I live in a country in Europe where we don't have polarised sockets. We have the Schuko and the flat Euro connector. Oh, and we have 230 volts!
I guess I was a bit vague in another respect as well. I do know enough about electricity and electronics and protective measures to not kill myself. I know that the chassis *is* hot, the same way a firearm is *always* loaded. The first thing I'll do before tackling these projects is to buy an isolation transformer. And I'm going to measure the voltage on every thing I'm going to, or might, touch. Reading the schematics helps, too, but there could be hidden faults or modifications...
It would be really beneficial to hear a pro expand on these issues. Not just for me, but the general audience as well, I believe. Maybe a special episode covering all the ways tube equipment is going to kill you...?
@@kepanoid , OH WOW!!!!, I had no idea, forgive me for that one. I know about europe being on 230 volts, and I know that the plug configuration is different. I would think the best way to isolate the chassis is to install an isolation transformer on the radio itself( sized for the wattage of the radio) it would not be very big in size, and would provide protection from shock!!!! have a great day!! if you have any questions about radios, feel free to let me know, I will respond back to you!!!!!, I do everything to share my knowledge, I have been doing electronics work for 45 years.
I made the mistake of replacing the mica capacitors on a signal generator. So far I can't calibrate it. I will put in NPO's next see if the results are better. I always enjoy and learn from your videos.
Yeah, they used to handpick some of them to work with the other components. I made the same mistake long ago.
Always interesting.
This makes me want to send you my 70s Technics audio receiver that I bought that was restored.
It came with a rather large bag of old caps and I saw the new ones inside.
But who knows if they did it right.
Seems to work great!!! But seeing your videos I doubt any of this was done besides recapping lol
It will be interesting to see how this unit comes out in the end
Mr. Carlson,
Years ago I learned resistor color code mnemonic that starts “black zero the midnight hour…brown penny one among many…red cherries grow in pairs….?….yellow dog has four legs….” Have you (or anyone) heard of this? I’ve forgotten a few but would like to relearn as it keeps me from counting on my fingers. Thanks from a huge fan!
My physics teacher at school back in the 70's taught us "Bad Boys Ruin Our Young Girls But Virgins Go Without" which was a bit racy for the time, but I confess I have never forgot it!
@@IanSlothieRolfe We learnt the resistor colour code by the this little ditty. Buy Buy Rosie Off You Go Birmingham Via Great Western. And the other one - Better Be Ready Or Your Grid Bias Voltage Goes West.
I have absolutely no doubt that you will go on to restore that thing
I have always enjoyed any of the projects that you chose. And I still believe that you are from the future. As a retired Electrical Engineer with NASA, I worked with many professionals, but never one that knew everything about different aspects of the trade. Mr. Carlson seems to know all aspects, whether it be tube type or SMT, and it just doesn't jive with his age. What's going on ???
There's always something to learn from your videos. Thank you
Yes, please do a complete restoration , and bring back the luster to the bakelite and dial
I'd like to see what it takes to get the dial to track again. Please continue.
Another brilliant teaching video & I thank you. Err..... have you ever considered getting a sidekick named Stromberg?????
Please realign as this always makes instructive viewing.