ฝัง
- เผยแพร่เมื่อ 28 ธ.ค. 2024
- vintage black and white television fm radio assessment for restore
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Thanks!
70years old and still running on original parts. That is build quality 😃😃😃👍 Great work!
Crosley cruiser, 1 year old and fit for the bin.
Shango, This Crosley is a rebadged Dumont RA-103. Stromberg Carlson also sold a rebadged version of this chassis in the TV-10 and TV-12. I believe there were other rebadeges too. I've owned both the Dumont RA-103 doghouse and the SC set. Both had the same parallel carbon comp resistors and they were even noted in the schematic. SC actually painted over all the Dumont transformers with their own branding and part numbers.
The 12JP4 was a pyrex tube with shouldering around the neck, a more rounded transition from side glass to screen, Dumonts funky proprietary HV connector button, and IIRC no ion trap or aluminization (definitely had ion burn)....Together those elements made it look like a pre-WWII CRT design.
Those harnesses should have string binding them together not electrical tape....BTW look for one where mice have eaten the harness...I made one good chassis from 2 where the mice ate the harness (I built up the one that stunk less/was stained less). The mice ate different parts of the harness in each set so I spent a day making 1 good harness out of 2 ruined ones (good times).
Probably the 2 hardest to get commonly failed parts on these Dumont chassis are the B+ relay and the focus pot. IIRC the flyback is basically a a common early RCA fly, and the 12" round CRTs are around $100 if you ask around the TV collecting community (hell I even have a spare 12LP4).
even a fake crosley from over 60 years ago is better than a fake crosley from today!
Yes you are right. The Dumont "Inductuner" gives it away.
Q and ft K y65
I hope the TV's case and chassis are reunited and restored one day. It's a worthy set. I wouldn't bet on it though. 😕
Yeah, once stuff gets separated it never finds its way back. Shame. If the guy just wants the cabinet, he should look for a basket case to take apart.
@@KameraShy This is a 48 with FM! He should definitely chose a different set to do his dumb project and restore this one.
Of course, I kind of understand not wanting a FM radio using 85 watts or a 285 watt B&W TV if you are actually going to use it
Me too!
Shangoo66 what a Kool 1948 crosley 12inch tv fm radio receive
Shangoo66 I wish you a happy THANKSGIVING
I believe the idea was to just conserve the picture tube while using FM by turning off filament to the CRT. Not a power saver, a picture bulb saver. What a well designed set!
I believe your theory is sound. Not sure however if someone was trying to save the Tube or just make parts of it work without popping the main fuse. Things like this were not tossed in the garbage back then. If you can get the radio part to work, it's still good.
Seeing modern broadcast on such an ancient set gave me chills, like some Twilight Zone kid accidentally tuning in to a dystopian future...
Bow to the dystopian it's the only way
When crosley was quality.
Pepperridge Farm Remembers
And the women were straight
Seems a lot more Dumont than Crosley.
@@MrKillswitch88 Joey Biden does not remember ....anything.
70 odd years ago XD
What a waste to use such a set just as case donor for soulless modern tv. This set is in very very nice condition and deserves full restoration. Shame on its owner!
A Chinese POS that'll be dead in 7 years, let alone 70. I hate upcycling/modernization culture.
The TV will be useless unless its modified... it will never get a picture. All Signals, by LAW, in united States are transmitted in Digital HD so unless you modify that set with a digital to analog converter it will never work.
@@ILSRWY4No you just use an external digital to analog converter box hooked up to the antenna leads, cheap as mud and readily available. That's how he was getting a picture on it.
@@ILSRWY4 Could always feed a signal to it like early home computers all had an RF connector to hook to a TV set - IOW, don't have to broadcast a signal to it in order to try and bring the screen back to life
@@ILSRWY4 Use a RF modgulator and a HDMI to composite converter.
Since I haven't seen it come up elsewhere in the comments...that tuner is very probably a Mallory InducTuner. It's a very high quality part, extremely reliable and well made. The FM coverage came simply as a bonus of its continuous tuning design.
You should talk your friend into fixing such a piece of history and just build something for a display
He definitely should NOT do what he is planning to do.
Beautiful set! Restore, not butcher up!!
It must be a shock to the set for it to be restored to an era where the content of Tv programming has become so bad. If Tvs could comprehend the content they would shut themselves off in disgust.
TV is so much better now it's not even funny. We're in what's widely considered the golden age of television
@@onometre when TV is a thing of the past ?
@@onometre lol, TV is rubbish. Absolute rubbish. Try reading a book...If you can read...If you are under 40 it is doubtful....
Someone should do a Brave Little Toaster style parody of Shango. It would be hilarious, all of his equipment would be ranting about polotics when he wasn't looking.
@@seanobrien7169 thank you for the laugh. just remember, I'll be here long after you're gone
YESS another Shango repair video and its my day off of work! I love your videos they are so soothing for the soul. I eagerly await each upload. It is like a nice treat after a long days worth of hard work. Keep up the awesome work my man!
Conductance: 1) the reciprocal of resistance, measured in Mhos. 2) the ability to pass sh*tloads of current before exploding in a giant fireball visible from Alpha Centauri. Or, at least China.
mhos was the former name it is siemens now 👍
Hell yeah. A long video!
As someone that has been working professionally with electronic repairs for 30 years myself and being edjucated in repairing CRT TV´s (not tube but transitor sets) but never having worked with repairing TV but other things i am super impressived that it worked so well after so few repairs, even the linearity was great.
The black and white cat adds a human interest to this exciting repair video!
Excellent build quality of that chassis. It was amazing how good the horiz and vertical linearity was even with no adjusting. The emission quality of the 12KP4 was excellent too. Definitely a great restore candidate. Thumbs up on the video.
Watching you diagnose and resurrect this set was worth every single minute dude. Just awesome. Thanks.
That rotary selector switch on the front...
Is the fastener that holds it in place called the Radio TV Phono Nut?
Blimey, that was a challenge and worth every minute. Being able to bring back to life such a vintage set whilst keeping a hands-off approach is a serious measure of your abilities and award-winning :) All the best, Beamer.
As to the resistors in parallel, I've seen it too on old amplifiers and radios. It would show a single resistor on the schematic.
My late friend and electro-mentor explained to me the manufacturers would occasionally purchase components in bulk and if they had extra resistors of a given value and could be paralleled to give the desired value they would do it to expedite or save some $.
Resistors are the most flexible components as far as configuring for proper resistance and wattage.
Those look like 2w resistors. My guess is they needed the higher wattage, using off the shelf resistors instead of ordering larger ones.
TV was exploding during the time period this set was made and manufacturers were going through a TON of components. It was definitely cost/time saving, or maybe they couldn't source the correct resistor as parts shortages were common.
@@classiccomputers6211
I agree. 👍 As the war wound down it took awhile for industry to catch up to demand. I think with war surplus there were train loads of electronic components that never got used, so the TV and radio companies bought up what they could and just used them. They probably payed a few cents per pound and they just made them work.
@@Iconoclasher For sure. You definitely run across some crazy stuff in sets of that era. Bob Andersen even mentioned running into West German and Japanese components in some of the old 40s and 50s Admiral TVs - I've never come across this myself but its certainly plausible!
Being a post-war set, they probably had a lot of surplus components left over from military needs. Thus why they paralleled resistors. Additionally, it was cheaper than getting actual 500ohm resistors.
Interesting theory. Also, paralleling resistors add to better heat dissipation or better accuracy.
I do that with certain designs. But that's just me.
Great video, enjoyed every second of it. I don't think I will ever have the privilege of working on a set this old, but watching your content allows me to experience what it would be like... thank you for taking the time in making these videos. :)
Used to have a few oldie moldies, wish I had just one of them now. 20 years ago I had a Sparton with mirror in the lid and the picture tube ( keep it politically correct ) would light up. If I had it today I bet with help from the internet I could have made it run.
All I have now is an old tube amplifier and my Philco 1934 model B that I had when I was 5 years old and I am afraid to run either one anymore till I do capacitor change. They're all original.
Just Amazing getting something out of this
You never cease to amaze me, man!
Nicely done sir. Been watching you a lot, hopefully I'll eventually learn something and be able to get my 1947 RCA Victor cabinet working again.
4:35- That's the mud dauber nest, the most important part of any TV set
Wow! What a great set! Well deserving a restoration and putting back into service. I'd love to find one. A TV with a magic eye tuning tube. A first for me. Thanks for the great video!
I think an old Dumont that I had for a short time had a tuning eye.
Had lot of old radios with tuning eye tubes.
A 70-whatever year old set with probably at least half the capacitors being leaky, and you (as usual) get it to work. Amazing! The one thing missing in the video was what you did at 1:17:42 to get the picture to work.
Moved the ion trap magnet. Maybe that becomes clear at the very end of the video IDK
Never know, I might get a moments rest and time to watch the rest of the video one day! Usually manage to make time for these longer videos as they're really enjoyable, but realising it's been 2 months to get 41 minutes into the video this time just underlines how crazy things are right now lol. Anyways, got to go out yet again now (nearly 9.30pm here) maybe get to watch some more later on before bed... Appreciate all you share man, can't thank you enough.
Be careful switching supposedly compatable tubes. As I recall from my youth about 50 years ago I had a radio that needed some 6K6 tubes and I had a bunch of 6V6 and I could use them but I had to switch around a couple wires. Same type tube but wired different.
Not positive on numbers but you know what I mean.
I made it work whatever they were.
I love the styling of that set. It’s a clean look.
I used to own the Stromberg Carlson version of that set.
I think it was called a TV 12,, had the matching stand...
This is one of your best videos, and highlights the tremendous find. The quality of this tv, and the marvelous engineering design of it circuitry is stunning as exampled by the picture and the FM audio quality. Wished that eye tube could have been replaced. I wonder where that glowed on the front panel, as we only saw it laying about the chassis. If I was a collector of vintage televisions, this would be a must have set for a collection and to restore. Too bad you had to give it back to your friend. :( Thank you for sharing this!!!
Many decades ago, I remember as a little kid watching "Kukla, Fran and Ollie" on a TV set in the family living room quite similar to this one!
Kukla, Fran and Ollie was the vintage of this set, first broadcast in 1947.
I believe the tuner on this is a slug tuned set, like the old Zenith's from the same time period.
I just recently restored a 1950 Meck Philharmonic model 8200 that the person I got it from found it in an old farmhouse that the roof had collapsed over 20 years ago, and all I did to get it going was replaced the capacitors and out of tolerance resistors and a 1B3 tube and the original solid walnut cabinet was still in good shape yet.
Amazing! Great skills in figuring this out.
That’s mind blowing… 72 year old parts and it works. Wow!
Love this channel. No nonsense, great content, thanks mate! 👍👍
6V6 tube is equivalent to 6П6С (6P6S). 6L6 is the equivalent to the 6П3С (6P3S). All of those have the same pinout just the different power. With the one you put in, easily can burn the output transformer.
Correct. A 6L6 tube, especially a 6L6GC, is too strong for a 6V6 circuit. A 6V6 does work well in a 6K6 or 6J6 circuit, though. The plate voltage isn’t much different, but gain is higher.
@Veljko Batinic why the tubes are glowing blue at 1:36:00. I am curious about that. What is happening inside them?
@@mianahmad5918 The blue or purple glow means the tube is gassy. This condition will eventually reduce the tube's performance. If the plates glow red, it means the current is running to high, and the plate will eventually melt away.
@@dougbrowning82 Hang on a sec, that blue glow is on the inside wall of the glass envelope only. Those are electrons hitting the glass and making it fluoresce. Lots of power tubes do that and it is perfectly normal. A gassy tube will have the whole hollow space in the tube light up in a sort of pinkish violet color, that comes from the electrons hitting the air molecules inside.
@@blitzroehre1807 I never really thought much of it, but I was always told it was a bad sign.
Excellent Job Just Love The Money Shots you do with the tv’s It’s so cool to see them working in all there glory
A shango video on my birthday is the best present!
Tell your friend to go to the nearest GW store and get a 12" color tv there. and leave that tv alone for crying outloud..
Really appreciate your videos Shango!
In a non related note LA oldies is on KKGO HD-2/ maybe they’ll be back on 1260 at some point.
It's amazing how few parts some of these sets need to get going again!
That fly breaking in two is the greatest moment of my weekend so far.
To a delicate crunch!
I always enjoy your uploads Shango. Keep up the good work👍
I love seeing inside these old sets, this is what I was working on growing up. You aren't kidding about parts not being cheap anymore!
Worth restoring for sure, nice video.
great job ! congrats !!!
Wow it has channel 1! I should think that would have been the last model year that would have had it. That’s super cool!
Shangoday is the best day of the week.
Oh man shango066's hilarious! Love the channel, love tubes, amateur tube guitar amp builder and love old tube technology. This channel rocks!
Your videos are informative and enlightening.
This is one of the craziest videos I've EVER seen. You are a genius!
It's crazy how I now can watch an electronics diagnostics channel and laugh like a madman at the offhand comments. Just love that Shango.
I rebuilt the same model back in 2005 still works good I had crt rebuilt by Hawkeye before he closed down.
Now my Saturday morning can begin.
What an amazing old set! Will modern electronics perform that well in 80 years?
Nope
Makes you wonder what was the first tv show or radio they tuned into when this was new. How cool to see it come to life.
And just how many neighbors gathered in that living room to watch it.
Wow! 72 years old and you got it working. Hats off to you.
Picture quality and schematic complexity are amazing. Cheers! S
Sad the owner wants to put modern electronics in the inside and not use the set as an original. He should just have a lookalike prop made. Not difficult to do, most people wouldn't know the difference.
I agree.. it might sound a bit 'hippy' of me to say, but the layout of those components is a fine art. Some fine analog engineering.
That is one cool set! It is the same age my wife was when she passed away last year. I was a kid compared to her being 70 years old. I can recall some old sets when I was young but none quite like that. I had a couple of 5 inch portable sets back in the mid 70's one I bought in Japan the other a Panasonic that was colored olive drab, it was great because I could pack it up in Radio Teletype van and nobody was any wiser that it was not regulation gear unless they were very familiar with the rig, I was never called on it. The RTT rig had to have 110 volts so in the field I ran it off a 10KW generator 2 on a trailer that I pulled behind the rig. The rest of HQ used to run lines to my generators to light up their tents where they played war in the desert around Fort Bliss Texas. I used to set my little TV on a small shelf in the shelter and run a wire to the secondary antenna which I never used because we never used duplex send receive mode although we were wired for it in the rigs. Being the NCO in charge of my section, I pretty much lived in the little rig, it was warm, well lit and had a very comfortable chair. It was great to set back in my nice warm unit and watch TV while the rest of the unit played war games. Since I furnished the unit secure communications the rig need to be locked all the time and messages to be transmitted came in through a slot in the door nobody bothered me other then some of the guys from commo
Crosley used to make nice stuff. That big power transformer shows they spared no expense. I have a Magnavox of same vintage in a plastic case. It has NO power transformer with the filaments in series and the 8 inch picture bulb is not magnetic deflection.
Great vid. I guess if I had to pick a favorite part it would be either when you blew up the tube, or put your finger through the speaker.
I'm certainly in awe of your repair technique. I would've never thought to use the 'slam the volume at the highest possible level and watch 75 year old speaker rip itself apart'. Amazing. Genius level really.
It was really only the general lack of sustained loud high pitched noises that was disappointing.
I'm really waiting with baited breath for a part 2. THANKS.
My assessment of the set is… “hell yeah, bring it on. I can’t wait to start ripping out paper-wax capacitors!” 🤣😆
Wow..never saw a speaker break apart as it was playing...all your videos are interesting and informative with a bit of good dry humor!
Great 👍 living room centerpiece. I hope 🤞 this TV 📺 can be spared for somebody’s living room, restored or not. I actually like 👍 this TV 📺 just the way it is. Your friend, Jeff.
Oh wow, I think this is the first TV set that you worked on that has the old U.S. Channel One ! en.wikipedia.org/wiki/Channel_1_(North_American_TV)
So you know, I got a targeted HHS ad telling me about the Covid vaccine being safe and effective after the video was over which I found much more funny than I should have.
But the covid vaccine IS safe and effective. What mis information propaganda are you listening to?
@@herbertsusmann986 I am not making a statement about the safety and effectiveness of the vaccine. I personally have had both doses of Pfizer. I just know that he mentioned in the video about TH-cam taking down videos about vaccine misinformation and the first and only time I ever get a targeted ad about it was after his video.
I like all Shango066 videos, but FINALLY a TV video again!
Neither the 12JP4 or 12JL4 CRT are in my 1947 RCA tube manual, but there's a 7JP4 CRT listed that is electrostatic deflection. What a difference a year made. Really nice score. You are right, too that you have to be diligent if you want to find vintage electronics. I see them often enough on craigslust, and I'm not in CA or Chicagoland.
Amazing. I love those vintage electronics. Thanks for sharing.
Likely a split carrier set. They have a seperate IF chain for sound and picture. Either one can drift so sound and pix will not tune together. Later intercarrier sets don't have that problem Good video post.
The IF chain, having a bandwidth of several Mhz, isn't vulnerable to drift, unlike the sound. If the centerpoint of the sound IF strip is off, it can be 'walked' carefully by ear back into proper register with the pic (this applies to split sound sets, not intercarrier).
That tv looks pretty clean!
that is a pretty cool looking microwave oven.
"Sounds like we may have another Nissan in the neighborhood" LOL
Incidentally, how long did that horn last ? It wasn't mentioned at the end of that video.
Sad to see that house you sent me abandoned.
@@shango066 There are many abandoned farm houses here. It was nice for once to see the stuff still inside wasn't smashed by vandals. Did you ever see a TV like that DuMont ?
Crosley. The name goes on, the quality goes nowhere
*now
Dumont made that.
@@eringatewood5062 When Du Mont was Du Mont. They lost their shirts trying to create a third TV network in the 1950s and ended up being bought out by Emerson.
what an exquisite television
would have liked to have seen it with the case on but it was a great video and I couldn't believe how well it was starting to work! :)
Amazing. Much of it is way over my head but still great entertainment. 👍
Shango, Your candor in saying you don’t know has restored my faith in humanity, at least some of humanity.
Whenever you hear "19" as the video starts, you know it's going to be great.
Dear Shang066, An amazing picture for a small TV. Nice job.
All this videos make me feel enjoying my year of tv set mechanic in cuba 1967 fixing all old american tv without spare parts boiling into wax the leaking condensator to fix it up
That is basically a Dumont RA-103. Classic design, very robust. I have fully restored one. Just needed most caps replaced. R's probably fine.
Looks like the speaker connector is designed for a field coil speaker. It may of had the speaker replaced at sometime with a permanent magnet speaker. Either that or both were options.
@Brendan White why the tubes are glowing blue at 1:36:00. I am curious about that. What is happening inside those?
@@mianahmad5918 Not sure. Probably to do with the type of gas that is inside it. Some regulators do that, or it may be a tube that is slightly gassy.
@Shango066, the poster of this video, could probably answer you better as he knows exactly where that tube is in the circuit :)
@Brendan White thank you for your response.
Until Shango does a face reveal I’m going to just assume he looks like actor Michael J. Pollard cause he definitely sounds like him.
That's never going to happen. A quick Google search and knowledge of all things that shango does in life will net you some pictures of what he looks like. your welcome....
That was an amazing resurrection of a 72 year old TV.
Thats an amazing picture quality. Great video ❤👍
16:00 hey I’m just guessing because when I got into electronics, everything was pretty much solid state when I started messing with electronics in the early 70s. Is that relay possibly switching the high-voltage when you go from TV to radio? I’m just guessing again, I have no idea what I’m talking about when it comes to stuff of this old or tube stuff in general
The relay keeps the b+ off until the 6AL5 delay diode warms up, so you don't have power going to cold tubes. On some vintage tube amplifiers the power switch has a standby and run position that does the same thing manually. You start by turning the switch to standby, let the tubes warm up, then switch over to run. This was supposed to extend the life of the tubes. Many TVs from the 1960s even kept the heaters on the whole time the set was plugged in. But this actually had the opposite effect, prematurely baking the cathodes off.
The B+ delay is to save the filter caps from overvoltage till all the tubes are warmed up and conducting, pulling the B+ down to nominal. Remember, the 5U4 rectifier with its bare filaments, comes on 'almost' instantly like a light bulb. Whereas the other tubes have indirectly-heated cathodes which take a while to heat up.
That has been an awesome video, to resurrect a 1948 TV. To see the TV as they would have seen the picture on that set in 1948, is awesome
Amazing it's running so well! Must be a low hour set.
Came for the Content, Stayed for the Commentary!!
That TV must have cost a fortune back in 1948
According to an old ad I have saved off the 9-407M was $445.00 in February 1949. The presumably otherwise identical 10 inch 9-403M was $319.95.
@@eDoc2020 That's like 5000$ today. I'm sure it was considered as a smaller fortune back than.
@kevin barker I've heard that 1947 was the year when TV really started to become a thing, that's when there was a TV station in most major cities. In terms of adoption TV in 1948 was probably similar to what UHD was like in 2015. It seems in 1947 there were around 45 thousand TVs in the US, increasing to around a million by the end of 1949.
So by 1948 you could probably find a TV demonstration at your local radio shop or department store that everybody could admire, but only the wealthy would actually buy.
@@janosnagyj.9540 Keep in mind this was an expensive big-screen TV. The more pedestrian 7 inch sets all sold for under $200. Still expensive but something a regular family could save up for.
@@eDoc2020 Post WWII, only NBC and Dumont were broadcasting a sporadic schedule of programs. NBC some evenings and Dumont other evenings. Only cities on the east coast of the U.S., New York, Philadelphia, Washington D.C., Baltimore, Boston and Schenectady had stations. In 1948, all four television networks, NBC, DuMont, CBS and ABC, put out a full schedule of evening programs.
For those who forgot, back in 1949 Channel 1 was reallocated to use in radio communication for police & fire radios.
I love getting up, putting the smooth jazz station on the ol’ AstroSonic and watching and relaxing.
It's strange seeing laptops and other modern gadgets shown on a set that was sold when computers were vacuum tube based giants that filled warehouse type rooms and were little more than programmable calculators.
Movie-length Shango and a '40s CRT.
I don’t know electronics, but I sold Beltron as well as Sencore and B&K. Our favorite and the favorite among guys buying and selling TVs was the Beltron. The Beltron guy used to tell me that they restored on grid 2 rather than grid 1, which the competition had to do because of their patent. He said it was critical to use the correct restoring lights and it seemed like the number was 10S250, IIRC. Your old one has the preferred meters compared to the new one you got which were not as dependable. I also like your color coded meters. A lot more of them had black meters, but otherwise the same as your colored ones. 8080A was the last model number and an improvement over the prior model 2972 (no idea why the weird numbers). Many 2972s were updated to 8080A. The guy that did repairs and updating was in his 80s and lived in South San Francisco.
I would have never guessed the tuning capacitor was a "screw type". Then again, I would have wondered why it didn't bottom out on one end. Very interesting and well over my head. I'm going to take the amateur license exam for the Technician class and be Grandfathered with the General class license I let expire a few decades ago. Most of the Hams are quite familiar with electronics and know much much more than I ever will. I've started buying radios and equipment to get started from scratch. All I'm allowed to do for now is listen. I've just purchased a new Icom IC7300 transceiver and I'm amazed at what it can do. Thanks for the video!