Zenith 24MC32 Color Roundie Chassis Resurrection on Jig
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- čas přidán 9. 02. 2024
- This on is in bad shape lets bring it back from the dead and bring it back to life. horizontal sweep repair, vertical sweep repair, color alignment
/ shango066 - Zábava
Naked chassis in a box! Tubes missing. No CRT. FEW people anywhere in the world could make a color TV out of this pile. That's the sort of drama I love.
I come for the resurrections, I stay for the ShangoSarcasm©.
i come for the repair, but endure, sometimes with teeth grated, the sarcasm.
shango needs to get out of LA. i'v known a couple guys like him there.
"Don't try this at home kids!" Is EXACTLY what my parents gave me to 'play with' as a child. A tube TV set. Reminds me of the old: "why don't you go out and play in traffic." .....
Yep, I was also playing with running B/W tube TVs since I was 10, maybe even at 8. Hot chassis, no isolation transformer. And I somehow survived. I only recall a few bigger shocks. Fortunately the models I had all used the same chassis with a single Si diode as half wave rectifier, so the chassis was tied to one pole of the mains, and not to the negative side of the full wave rectified mains. This way if I pugged in the plug the right way, the chassis was on neutral potential. I always done that, and wore well insulated shoes.
@@mrnmrn1 yup...
somehow God let us live
I guess your folks didn't realize the dangers.
Good job it wasn't a pre-WW2 set with mains-derived EHT !! Those were known as the "Widow Makers" ...
1:28:28 "I should run for president." Shango for president!
Or better yet, send him my way! I have a faulty prime minister that needs replaced.
i'd vote for him over trump, but that isnt really saying much
He's not old enough yet . You've got to be at least in your upper seventies before you're old enough to run . 🤪
@Highpoint211 Yeah,got to wait until senility kicks in before you're qualified. Nothing but the best!
Can't beat a two hour trip with Shango. Looking forward to the 50 year's worth of videos.
I love that we see good days and bad days and mistakes. Working on equipment challenges everyone, and this is how it goes.
It's a true story.
Just got home from knee replacement surgery. Luckily I'm in time for Shango:)
Wow, Shango sat on this video for six months. His persistence on these repairs is some kind of super power. This is the only electronic repair video channel that causes outbursts of laughter.
I've been sitting here with my coffee getting cold thinking "where is shango, he's late, did they finally get him?" but fortunately it was just the extra upload time for a feature length epic.
We live vicariously thru Shango. I saw the hickory thumbnail and laughed out L. 😂
Funny how THEY are incompetent running the nation but THEY have incredible skills at ruining everything we like.
Probably on California's criminal most wanted list.
I'm surprised the thought police didn't try to re-educate him yet. xD
Yep, Big Brother is always watching. It’s a wonder he wasn’t re-eduma-cated.
Those 1960s era Zeniths were problems constantly, boost circuit cause so many regulation issues.
But, they were fun to work on..!!
My wife, late brother-in-law, and myself worked for Howard Sams. I had trouble with 1B3 tube failure. Cheers
I'm a simple man, I see shango I click
This by far is one of the best videos ever, long but sure really learned a lot and very encouraging to me as when you get into trouble you never give up and admit mistakes and move on and continue trouble shooting. Can thank you enough as your one of the last knowledgeable repairman alive. Big super thanks you're the best. Love your channel.
Jealous resistors,singing horizontal output tubes,deadly medications,treacherous chassis and toilet paper ads! This video is action packed!
Boxful of random parts. Shango : "We'll be doing a resurrection, maybe not a restoration"
Bloody hell a shango 2 hour special, thats my night time entertainment sorted, excellent stuff mate.
Top tip:
Wrap your tubes in clingfilm, it will stop any moisture getting in the pins.
Some might say you need to get out more, I watched the whole thing too.
I’m giving up CZcams for one of my Lenten sacrifices (starts Ash Wednesday, the 14th). I was realizing this morning that the channel I’ll miss the most is Shango. 😊
Ah Zenith color set. My first girl friends family had one, it was my first time viewing a color set, she invited me over on a Sunday for Sunday dinner with her mom and sister (Dad was in Vietnam) then watching the Wonderful World of Color by Disney. I still get a twitch in that spot where such things activate when thinking of the beautiful little blond girl with an ever so tantalizing body. (No, we never did the dance with 2 backs, but I did it with her older sister a few months later) Man that color, it was amazing, I will never forget the fireworks on the opening...
I gotta say,Shango records and includes the weirdest cool noises that I've ever heard from an electronics workbench.Those electrons are going beserk in that tube.
Nice quote from Hogan’s Heroes “I know nothing”.
That's a slogan worthy of the presidency! A slogan the people can rally behind.
I watched right to the very end. At times I got aggravated with how many things went awry. You are my Hero!
That 60's-era chassis color TV chassis was presenting Shango with *multiple* hurdles. _"At Zenith, the quality goes in before the name goes on."_ (On local channel 10, CBS' 60 Minutes was on the air when I was a kid, as they first aired in 1968. My favorite investigative reporter was Mike Wallace. He was very good at digging up dirt.)
I have done black and white sets, but you have just about convinced me that a color set rebuild may not be in my future. Thank you again for the video!
Dan
I honestly love that you keep the mistakes in... we all make mistakes and it helps that we see mistakes others make.
I troubleshoot more of my own self induced issues than natural failures. The normal failures are easy compared to mine.
Nice work and info!
Years ago, dad ran an electronics lab at one of our local universities and he built a high voltage RF generator for a physics experiment. When demonstrating it, he pointed out where the dangerous part of the circuit was, just then an arc punched a hole in the nail on his index finger and burnt the skin underneath. It comes as no surprise that in his EE course, one of the lecturers had the name R.F. Burns and looked like he was suffering from some.
We had a Zenith roundie as our first color set. An uncle died and we ended up with it because we were the closest relative. My dad hated it because it needed a lot of service calls compared to the Zenith B/W set. It would look pretty good for a couple of months until it got so bad you had to get the tech back to adjust/repair something.
Story. I had a 19" Zenith B&W same vintage. Changed the intigrators, feed back caps in & cathode cap
in vert. Set was vert blinking like yours. Went nuts, I wanted to fix as it was almost NIB. Turned
out when I put the cathode cap in 6" from the can was the reason. Got an OEM can & fixed it.
LFOD !
Nice long diagnostic video. Been looking forward to one of these for a while. Interesting set of symptoms.
Brings back memories of when I use to be a TV repairman back in the 1970's. Oh those hand wired Zeniths, I hated the solder connections!
This will be my weekend watch for sure since I have a Zenith Roundie. Only wish Shango were closer to Minnesota. He could get my Zenith fixed up.
Official Shango for President, I was surprised how much the resistors value changed with heat.
I’d vote for Shango!
Thanks for the info regarding a Zenith chassis. I, like you, dealt a lot with RCA's. Awesome job you did making this go!! Major kudos!!! 👏
OK it's time to pull the plug on CZcams! No content creator can beat this 2+ hour Shango001 blockbuster upload! Take care!
It would definitely be an interesting experiment to put some of the old components that attract moisture into one of those freeze drying machines for food.
Now that's an interesting idea
thank you for not smoking my friend.
Burst gate needs good Hoz to grab the burst signal at the right time. No burst & color killer activates.
LFOD !
Clinky dinkler Mc Mono boiler, thats new....cheers.
CB linear amplifiers didn't run the tubes as sharp-cutoff pentodes; they ran them as cathode-fed, grounded-grid triodes. I was in that business for awhile decades ago. There is a lot I could tell you about it if you want to take the time to talk about it. To answer your question, it's not hard to find old amateur radio literature with grounded-grid sweep tube amp designs where the harmonics were 30 dB below the fundamental prior to output filtering being added. On a scope that's a perfect sine wave. By the middle 70's the larger CB radio amp manufacturers were buying large lots of tubes designed specifically for them directly from GE. The ones I'm familiar with are the 8950 and M-2057. A quick search for "8950 tube" and "M-2057" tube will lead you to data sheets. The dates on those data sheets are 1975 and 1976. By then the CB linear amplifier market was driving power pentode tube production more than television. I'd argue that if there was ever any significant sweep tube surplus it was created by bad orders made by dying CB linear amplifier manufacturers.
1:35:40 Well, Tony Bennett died July 21st, 2023. So that's when this was recorded.
I'm surprised as much that you do recall about these items with as many people that just drop stuff off for you. Incredible.
I loved this video! It's like everything that really happens and more! I remember reading all the service stories in radio TV magazine and this is a thousand times better. I'm impressed at how a flyback and other components dry out while in service. When I worked for the power company we used to pull a vacuum on a transformer to get the moisture out. I wonder if a flyback or other components could be placed in a light vacuum and slightly heated if that might dry them more!
@0:16 - Only you sir can look at a box of this provenance and discern the model and chassis that it is as well as the year and it's historical significance. That is what, in my limited experience, I would term a "master." You're good. Very good. That's why I am prepared to sit down to over 2 hours of your dry wit and superior troubleshooting ability.
Gotta love that DEI in government. You just know it's working as it's supposed to. Some would say, the best it's ever worked.
6:55 Watching Shango066 and apparently he’s being heard counting tubes on my TV from outside the room I’m sitting in. Then I hear a comment from outside the room, “24! 24 tubes! Ah ah ah ah ah!”. 😆
This is a blast! 🎉 I love watching Shango weave thru a STACK of SERIOUS issues..... and I even learn a bit.
Superb entertaining and educational video! Thanks for this gift and all the other gifts we receive every Sat.
Your perseverance is remarkable.
You're amazing with your intuition.
This is one of your greats, alongside the “very difficult to fix Sony Trinitron.” Love it and I’ve learned a lot!
Testequipment .. well, I'm really glad he said equipment and not "equipment" 😁
Looks pretty 😍 hopeless 😞 with this, but you’ll get this little TV 📺 back into operation. We need more roundies to watch TV 📺 on. Great 😌 resurrection on them, Mr. Shango066!! Your friend, Jeff!!
Shango you are 100% CORRECT ABOUT THE LAME OFFICIALS. It's a shame that these old TV sets have to wake up and show the new Sadom and Ghamorrah these leaders are helping to support.
I watched the whole video, always do. Very interesting.. thanks! 👍
I’m a tree hugger and your spot on about 60 Minutes.
What are you talking about?
Yeah 60 Minutes isn’t like it use to be. Back in the day the journalists actually went far & beyond to give you a decent story, putting their lives on the line to give us a great Sunday night viewing. I remember every Sunday night at 7:30, 60 Minutes would be on tv when I was growing up.
I haven't watched it since Andy Rooney left. Their clips are now showing up on my YT feed. TV audience probably declining.
I haven't watched network television in at least a year and haven't missed it at all. All the shows are reality crap or talking head fake news anymore. Investigative journalism died with the Obama administration when he allowed propaganda back on TV. Can't have the legitimacy of one's citizenship and eligibility for office questioned by the media. What we have now is "make it up as you go along" journalism. Make up fake stories about your political rivals on Monday, milk the headlines all week, then quietly redact the story Friday evening and by Monday everyone has moved on but only remember the headlines from the previous week.
That bouncing reminds me of motorboating in an audio amp, where inadequate supply filtering provides a positive feedback path through the power rail.
Yep, I watched the whole thing. thanks
your commentary on lame stream media is as interesting as your antique repair documentaries ..good work mate
i have watched it from beginning till end. thank you, i learned that a TV can make nice Images while its broken :D
I love the bouncing picture. That should be a feature on all TV's.
A good watch as always, Mr Shango066.
I use 6P4S in my Dentron GLA1000. Grids are tied on them grounded grid. These tubes are fantastic for the frugal ham. Have 4 sets of them spare. Amp is modified all tubes are balanced out. Lots of info on the net to modify this linear. Amp with 50 watts drive puts out over 550 pep on ssb. Bet it is great for TV's. KM6BYW.
Sharp cutoff actually means the tube is linear. As opposed to remote cutoff which has the control grid wound with varying pitch so the cutoff is less sharp, which allows for gain control, but makes the tube more non-linear.
Oh yeah we wanna see this thing run for good!
12:52 And oh man! I was a kid in the 80's my friends and I used to find tons of vacuum tube TV's. The time when people were throwing away many working TV's due to them being vacuum tube stuff. I actually kept a couple of black and white 12" ones that worked!
We used to break open the TV's from dumpsters and used to pull all the vacuum tubes and dumb friends and I used to throw them at each other. We were aiming for the feet though. Not that that makes much of a difference. We must have busted hundreds and hundreds of vacuum tubes. Ah! Stupid old days.
There was a park in my area and a part ran under the street and so there was area under the bridge. Unscrupulous people would toss all kinds junk like old TVs there for some odd reason. It was the 70s, it was perfectly acceptable to throw away a CRT TV. In any event, one day there was a TV under there and my friends and I wanted to see an implosion and so we threw bricks at it. That thing did not break for nothing! I think we even smashed soda bottles against it.
@@tarstarkuszOh yeah we'd think it was easy but one time I threw an entire car suspention at a small color set with all the strenght I had and the only thing that broke was the shadow mask inside 😂
Last years archived video has me searching the internet for hurricane Hillary Clinton
She was roaming the high seas looking to belt Monica and Bill for their filandering 25-30 years ago. 🤣
@@minty_Joe Right on right on✋✋
Just one of those days
Best quote from the video, pointing at a wired web of parts: "Now... this cap looks important...".
Another great video 😊
Like some of the other commenters here, I was also tinkering with TVs from an early age. Didn't discover how painful EHT was until in the service trade. I THOUGHT I'd properly discharged that CRT.
3 inch blue-green spark meets index finger. My whole arm hurt like a good 'un for the next half hour ...
Great video, Shango. I loved every minute of it. You got that box of bits working well.
BTW, listen to the officials ! (lol).
Yeah we had stuff like 'Panorama' and 'News Night' that exercised fundamental journalism....cheers.
You are Great!
Did one of your friends drop it off there just to see if you ever realize that they placed it there?
I immediately knew the V out plate feedback integrator was bad when I saw the vertical stopping and starting. A set I got from another collector who couldn't figure it out had that. I think he got it in working order from another collector who used unlabeled low voltage micas that shorted...Took me a while to find it, but once you've seen that bizarre behavior you learn what it means...It's even helped me troubleshoot vertical in other makes.
Bad day? Bad month? BAD CHASSIS!!! No soup for you! ;)
At least the worthless incompetent leadership is multi cultural which is the most important thing...
Enjoyed the resto video on the zenith. I sure can relate to being in a state of mind when one's focus is off and it's better to get away from the project for awhile.
Build a TV. Excellent.
Chassis in a box.
"I AM MAD AS HELL AND I'M NOT GONNA TAKE IT ANYMORE!" ME TOO! "OBEY"?
The catclaw electrician!
Busting out the popcorn for this one
Random parts turned into TV!Shango only do
Best movie I’ve watched all week next to that bizarre Tucker-Putin interview the other day. At least your Zenith movie made sense to me:)
I have to correct you on one point... Don't ever call the idiots "Leaders" They are not leaders, they representatives.
Czech Republic?...My ancestoral people. Maybe, I can get a discount, comrade shango!
Nice basket case Color TV officially resurrected :D
Really appreciate 🙏 please.
Seeing these old tube sets reminds me of my dad watching golf on TV, back in the day .. he didn’t even play golf.
Well hmm, that seems “par” .. who plays recreational tackle football anymore?
It's very relaxing! Golf and tennis were favorites of the two shop owner who I worked for briefly as my first real job.
Dang, I would have imagined you’d have a large collection of germanium diodes, likely Russian. Because of you I ordered a large collection of Russian germanium diodes and transistors, about 500 diodes in total and a 1000 transistors in total, of course a huge array of different devices.
Damn its loaded with those ELSHITCO caps, a lot of this could very well be that high voltage, it seems to be fluctuating badly, i can hear it leaking everywhere. Moist dust is causing partial shorts everywhere. i would switch it off and run a hairdryer over it for a good 20 minutes.
Here in the UK we had a program similar to your old version of 60 minutes, it was called "the cooke report" damn he cracked down on criminals hard live on tv, it was excellent.
I have that same Jackson tube tester I've had it for years now the sockets are wearing out I really got to rebuild it
Great👍
"..like we're good friends..." 😂 Zenith being hard to fix ......me personally believe they use VOO DOO in some of their circut designs..
An amazing resurrection ,long but necessary. Hope you learned from it gang.
Sounds like the bad fluorescent tube starter audio effect in 1982 Ridley Scott's Blade Runner (and many other worse movies). Brass decreases induction (aluminum cores are also used for the same purpose in old HF trasmitters), and ferrite increases it. Many of the people repairing/restoring radios use a self-made tuning tool consisting of a plastic tube, often from an emptied ball pen or versatile pencils with a brass core stuck in one end and a ferrite core in the other end (ex. soviets in particular while retuning old OIRT FM to the western CCIR standard band).
25:40 "If these wires touch any of your test..." for a moment I thought he was gonna say testicles. I bet you could kiss them goodbye too when that happens.
Test...
That was my thought too😂
Молодец! что запустил этот гоб комплект....
I love zeniths only if we can find a tube and cabinet to put that chassis in
I wonder if dipping tube pins in a wax / grease prior to storage, would halt corrosion or oxidation of the pins, and preventing leaked and going to air ? Just a thought.
Nyuck plus
The final rant was marvelous.
Need a better picture tube? Otherwise absolutely impressive resurrection
Happy whatever time o day bro
😂 what a starting point