@ 3:23 , Instead of "Breakfast with the Arts" , many , like me, enjoy "Breakfast with Resurrections" ( and how appropriate on Easter weekend as well) on this channel. "Rauland was originally a "Vacuum Bulb radio manufacturer" , established by Einar Rauland in 1919, and was subsequently procured by Zenith in 1948. They stuck the "Rauland" name on the CRT, and light detector tube plant in Melrose park, which I drove by on my way to work, until it's demise in 2000, where the plant, and property were auctioned off. The property that it sat on, @ 1985 Anson Ave, is now subdivided and is a business park complex.
Hey, I had this TV in my bedroom around 1972. It cost $50 at the Salvation Army. There is a #47 pilot light behind the little channel window that projects the channel number. A very sturdy and bright TV when newer.
For '61 they moved the window mask behind the dial for a slicker look, and on the sets with remote control, there was nothing but a round window with the channel projected from a rotating cone inside. The only problem with that was that if the bulb burned out, you had no hope of seeing the channel number.
I had a slightly newer version of that set, a 19"" rectangular with a 90 degree, big neck jug, and 3DG4 rectifier (first and only 3DG4 I ever seen in a set). Same cabinet, same layout otherwise. Built like a tank, never once needed an ounce of service. Lasted many years, and finally gave it to a widow lady who used it many more years with no service. Dunno what became of it after her passing. Sure would be nice to see yours fully restored.
I for one happen to enjoy the sound of non mechanical birds in the background whilst tube TVs crackle to life... underlined with a layer of Shango laying down facts.
The aviation noises - personally, I like them. I listen often with good headphones. Your camera mic seems to pick up sound very well. The aircraft noises add a spacial ambiance which is pleasing to my ear.
They frighten me. They are private pilots. I knew a guy in college who took private pilot. He passed. But was so uncoordinated he couldn't drive a car into a garage without scraping the side and breaking off the side mirror.
I had one just like this - or very, very close - in 1971. Found it by a dumpster when I was in college. Dead or problems. I forget. Pulled the tubes, took them to the drug store, found a bad tube and bought the replacement. Lasted about a month. Dead again or same problems. Figured there was something else going on and was way out of my expertise to deal with it. (Accounting major) I was at least savvy enough to figure that something else was going on to be croaking the tubes. Back to the dumpster. With a little more nicotine residue added for good measure.
I used to have this set. I used it through the 1980s. When I had it, it operated perfectly. I don't know whatever happened to it. The window in the channel selector knob would show the channel number. The would be a light bulb behind the window.
Gibson used those Sprauge “Black Beauty” aka “Bumble Bee” capacitors in their guitars such as the Les Paul’s in the late 50’s until 1960. The vintage guitar guys want those old drifted capacitors because as you said they affect the tone control circuit. Supposedly Sprauge stopped producing the “bumble bees” in 1960,and afterwards went to black capacitors with the values in red on them. Gibson also used Astron capacitors in 1960.
as said in the video , if theres no dc across the caps in use purely for passive tone correction, i dont see any need to replace them. (or waxy caps). similarly in active circuitry if only across cathode bias resistors with only a few volts across them,
Love how you can actually predict what'll be frigated up the most just by analyzing the b+ swirly copper spaghett first man. Just in awe. I need a reorder.. u know what that is? lol nice work.
Shango, in Zenith radio and monochrome TV chassis numbers the letter is the year. So an E vs an F in the chassis number means your looking at the previous year schematic for that market class of TV. Many Zeniths of that era had a shutoff dot even when the CRT was good, just a design quirk.
This is a great memory for me. Growing up we had the exact set at our kitchen table. It had many many hours on it by the time it was replaced with a small Zenith color set. I hated when the dial lamp would burn out, then had to guess which of the 5 VHF channels I was watching back then. Occasionally the contacts in the tuner had to be cleaned too. My dad would only buy Zenith TVs. He was capable of repairing them too but the Zeniths’ rarely failed. Thanks for sharing that “portable” 😂 TV. Yeah portable if you had a small hoist.
The "tin whiskers" are interesting if that's what they are. I wonder if tin whiskers are more prone to happen near high voltages? Some folks have commented on asbestos but why would anyone protect a metal panel with asbestos anyway. The flyback cage was (I think) mostly there to shield users from the x-rays that the tube EHT rectifier emitted.
I have a soft spot for these metal cabinet B/W TVs from this era. We had a turquoise Philco at a summer cottage that lasted a long time. I know my dad didn't want to buy anything real expensive in case somebody broke in during the off-season. This place was 40-50 miles from a transmitter but it was watchable on the single antenna. I think it lasted until the early 80s when it was given to a church for a yard sale. Pretty good for a Philco, but back then we didn't know that Philco was junk, just that it was cheap.
We had one like this when I was a small child, the revolving channel window was a great playtoy. Ours had an all metal case with a metal on/off/volume knob. At times it could be very "exciting" especially if you had the electric plug turned around wrong.
Ours was a 19" on a tall, tippy metal stand and with the power transformer, those things were heavy. If it had ever fallen, it could easily have killed a kid sitting under it.
OK, here's a crazy story from those times. My mother saw a "color TV screen cover" at the dime store, it was a transparent plastic sheet that had blue at the top, a mixture of colors in the middle, and brown on the bottom. You were supposed to tape it to the front of your B&W TV and watch TV through it, so you could pretend you had a color TV. It made watching cartoons on Saturday morning more fun. Back in those days, it did not take much to entertain a child. I don't remember seeing a color TV until 1970, they were just too expensive, no one could afford one.
The "bumblebee tone" can be most likely attributed to dielectric loss and dielectric hysteresis, If you put some capacitors on a curve tracer, they don't have a straight line, most obvious on ceramic caps where it's very non-linear.
Is that the Z5U type of dielectric? I remember back then when 0.47uF capacitors were the size of C cells, until I saw an orange square disc capacitor that was 0.47uF (at 25 volts). Amazing. Only much later I learned that the dielectric made them non-linear and microphonic as well.
4:00 That tube is so bugeyed for something in a portable B&W set. It almost looks like a 90 degree tube instead of the 110 degree tubes that Zenith used from '61 on with that slimline portable style that mostly disappeared when color sets took over.
Oh, it's a 16" or 17" CRT; that's probably why it looks so pudgy. I had almost forgotten that 17" TVs were a thing. I never owned one, but if I had, I'd have felt a bit cheated knowing that a 19" would only have cost a few more dollars. Though, I suppose, on the average, a smaller CRT with the same chassis is likely to be less trouble prone.
I acquired almost the exact same set about 8 months ago, tiny bit different same chassis and it has vertical issues I need to replace the bumblebee capacitors, I think that's what's wrong with mine.
I know it would be a hassle but it would be cool to see how the cathode winding failed on the flyback. As far as the picture tube it’s a Zenith. I would only replace if someone would offer a forever home.
Just for the fun of it, as you are not very interested in the set. Could you try to rejuv the crt with the beltron? Maybe there is not any life left on the crt... but it could be interesting to see what the different modes of the crt tester on a case like this can do though it wont last for too long.
I have a radio that one of the bumblebee caps exploded in. made a pretty nasty smell when it did, but kept playing at reduced volume in the time it took me to unplug it. I think it might have been the cap that connected to the chassis if I remember right...
Thanks again for a good quality video you do ,j attend tjrs les video de hamfest filmé par vous c est come si ont y etais je ne sais pas si c est bien exprimé en francais!! Merci encore
I believe most of the portables switched from metal to plastic at the same time they eliminated the mains transformer, since the shock hazard was much less serious with plastic. Then, after about 10 years, they mandated flame-retardants in plastic and "wood byproduct" cabinets to stop the sets from burning people's houses down. I still remember my neighbor's 1964 RCA console sitting out in the rain with a hole burned through the top; their next set was a metal-cased portable on a wooden stand.
I can easily picture somebody banging on that TV with their fist to get the picture to lock. And they probably managed it. Banging on it probably "fixed" the open coil, for a short time. As for fixing it properly, if you can get a replacement CRT then maybe. Despite all its problems, it's really trying to work.
I’m currently working on a beautiful low hour 14N26 that’s experiencing some of the same problems. I got it from a tv repairman’s estate and picked up as many parts as I could fit in my car. Let me see if I have a flyback for your set.
The 14N Zenith chassis was basically in production for over 12 years without any major changes. In that period of time, Zenith sold more than 12 million of that chassis. Extremely dependable. Zenith Quality; built to last.
i would like to see you take a picture tube like that and rejuvenate it several times to see how good you can get it and if the picture tube burns out video over. do this after resurrection.
I’d pass on this one for a complete job. Though I would like to see a quick attempt at rejuvenation of the CRT using your best, (or all) rejuvenators. I’m also a decent size electronic simpleton just learning. I understand what a CRT brightener does but what’s the technical explanation for how it works? Great stuff you do for us.
All a brighter does is increase the filament voltage using a step-up transformer. This temporarily increases the cathode emissions until more of the cathode material wears away, or the heater gives out.
The "brighteners" I remember from ages ago were nothing more than a transformer that jacked up the filament supply by a few volts, causing it to run hotter & slightly elevate screen brightness, at the expense of using up the remaining cathode emitter material very quickly. It was a last-ditch palliative measure that might delay total CRT croakage for a week or a month. If you opened up a color set - especially the later ones with skinny CRT necks - and saw one of those already dangling from the socket wiring, it was like testing positive for pancreatic cancer. "Sorry, sir, but there's nothing else we can do except make funeral arrangements." "Rejuvenator" devices seemed to operate on mostly witchcraft. The only one I ever saw that occasionally did some good was made by a company called Beltron. It had two very different operational modes, "restore" and "rejuvenate," the latter of which would make sparks fly inside the neck, as if it was punishing the electron gun into submission. Someone once explained that it removed accumulated inert material from the cathode surface by "boiling" it, thus restoring its emissive properties to some degree.
Thanks for your reply. I knew the brighteners were last ditch efforts to burn out a CRT that was done anyway but didn’t know the method. Shocking a CRT temporarily to revive it does sound plausible though if the inner materials just have some contamination. Similar to shocking a car battery and boiling it to knock sulfur off the lead plates and allowing the acid to again have good contact with the lead. Thanks for your vivid descriptions.
@Al’s Guitars Problem is that you can "strip" the cathode of the material, which makes it an efficient emitter of electrons. Plus, it typically doesn't last.
When the cathode is open, the cathode voltage will rise until the grid-cathode voltage is so negative that the tube goes into cutoff, and no more current will flow.
You gotta have add the nicotine glue to the packard bell to have a real idea. i see it on old computers, tar really makes the dust stick much more quickly and solidly
Zenith bought Rauland in the early 50's for a constant source of CRT's. They were used along with Zenith jugs over the years. I think Zenith kept them indipendent for some reason. Never seen any rhyme or reason what brand you would get in a new set. Also they have different EIA ## Zenith is 343, Rauland 1101. DRH.... would probably know. LFOD !
those mains input plugs/'cheater cord' things werent really a thing here in the UK, except curiously by the UK division of Philco, until Thorn bought them out!
That must be the Zenith "motion Tv" model.. But it sure does display that diagonal line in sharp detail. The little weighted channel indicator window thingy is cool. Got Keppra?
2:28 I'm amazed that anyone would not have a cord for that; any old Norelco shaver cord or one from an old boombox will fit, though you might have to cut a notch between the holes to widen them a bit. On the other hand, if you've kept a set like that going for 60 years, you probably don't need the protection of the interlock.
When the picture is dim less current is drawn which means it takes longer for the high voltage charge on the CRT to get used up. It's not really a sign of a weak CRT, a strong CRT with the brightness turned down will do the same.
The jug looks usable to me. Maybe the spot-killer circuit has quit working..? When those old beasts with the boat-anchor power supply transformer were turned off, the deflection circuits shut down before the residual charge on the anode bled off with the cathode still warm and emitting, and to compensate, the gun was supposed to be forced into zero-conduction grid bias so that the undeflected beam wouldn't "burn" the phosphor. There's probably a tiny blemish in the middle of the screen if you look at it closely. Not sure, but I vaguely recall that model with the funky channel selector backlight had a separate face shield and jug, as opposed to later ones where the two layers of glass were bonded like a car windshield. Which makes them more restorable than the latter, since the two pieces could be disassembled and cleaned (with extreme caution, since an un-bonded CRT implosion can be quite nasty).
That looks like the TV this old man in Houston tried to sell at an old auction house. With the lights out the picture was good. This nice old lady purchased the set against my advice. Needless to say, she brought back. I opened the back of it, and it had a string of brightener on it. Three to be exact.
I remember we had a RCA new Vista..it had 12 channels..the U was channel 39...I remember seeing KCST San Diego NBC when going up in L A...in the 1970s...I remember how i tried to figure out how to change the UHF station?..... very weird!😮
About those black beautys in guitars - they were used in 50s Gibson guitars, notably the Les Paul model. They are used as tone capacitors, for passive high roll off, to make sound of guitar more dark, mutfled, imagine classic jazz guitar tone. They also need to be specific walue not just any and I’m not sure the same ones were used in TVs.
Grey dust vs brown dust.... My experience is the brown dust is cigarette smoke and grey dust is clothes fuzz or other... Growing up in a smoking house, the dust was brown. I don't smoke so all the dust in my own house is grey....
Every set we give up on is one less set in the world... Don't get me wrong, sometimes you have to let them go. but if it's reasonably savable it should be saved. Probably at this point only you would know that. I'd love to see it work again.
SHANGO I HAVE A 16D25 WITH A STRONG CRT BUT VERTICAL DEFLECTION ISSUE. IT WOULD PROBABLY COST A FORTUNE TO SHIP IT TO YOU. TOO BAD WE WEREN'T NEIGHBORS , WE COULD HAVE EOL PARTIES
I'm wondering if that flyback coil grounding the cathode is some sort of negative feedback setup. As to what to do with the telly. Up to you but if you don't have much love for the thing give it the send off it deserves with a Decollete EOL.
@@pcno2832 The last closed several years ago. All the equipment was sent to the early television museum in Columbus Ohio. But as far as I know they've never been successful at rebuilding a tube.
I remember dragging old tv's home that looked like this or worse inside. I'd tear them down just because and soon learned that was a bad idea because of the filth. My mom also put the kibosh on that. They stunk like cigarettes too
Don't you just love that flawless Zenith 6BN6 Buzzomatic sound, a true master piece of engineering. Come on Dan Fix The Thing Please!!! Sorry I got to shoot, I need go check my décolletage.🤪
For some odd reason, I don't believe the Zenith would buzz right out of the box. That would indicate something has changed since new. A misadjusted AGC will cause buzz; an alignment may be in order; adjust the buzz control, quadrature coil, etc. A design engineering flaw, although quite touchy, would generally not pass the quality or performance standard of this Zenith receiver. Nor would it meet the Zenith standard.
The feds are talking about banning all filamentary light bulbs in the coming months. So if you want to lay in a supply for your dim bulb tester I'd start doing it now. Although toward the band date you might get some tremendous deals on Bob's as they're trying to get rid of the current stock.
Massive upcoming lawsuits. I have how followed this since Trump became president, but the regulations from then were overturned. Before then, I collected massive supply of "incandescent" bulbs. Now, I prefer LED but still have my collection. Will Biden's Gestapo confiscate them?
I think you should fix it for the fun of it, Id like to see you at least try to fix the open coil on the flyback and see if you can at least get a stable picture
@ 3:23 , Instead of "Breakfast with the Arts" , many , like me, enjoy "Breakfast with Resurrections" ( and how appropriate on Easter weekend as well) on this channel. "Rauland was originally a "Vacuum Bulb radio manufacturer" , established by Einar Rauland in 1919, and was subsequently procured by Zenith in 1948. They stuck the "Rauland" name on the CRT, and light detector tube plant in Melrose park, which I drove by on my way to work, until it's demise in 2000, where the plant, and property were auctioned off. The property that it sat on, @ 1985 Anson Ave, is now subdivided and is a business park complex.
Good play on the R word
Keep the birds. They add a nice ambience.
Gotta love when the back of the tv is brighter than the front
Hey, I had this TV in my bedroom around 1972. It cost $50 at the Salvation Army. There is a #47 pilot light behind the little channel window that projects the channel number. A very sturdy and bright TV when newer.
For '61 they moved the window mask behind the dial for a slicker look, and on the sets with remote control, there was nothing but a round window with the channel projected from a rotating cone inside. The only problem with that was that if the bulb burned out, you had no hope of seeing the channel number.
I had a slightly newer version of that set, a 19"" rectangular with a 90 degree, big neck jug, and 3DG4 rectifier (first and only 3DG4 I ever seen in a set). Same cabinet, same layout otherwise. Built like a tank, never once needed an ounce of service. Lasted many years, and finally gave it to a widow lady who used it many more years with no service. Dunno what became of it after her passing. Sure would be nice to see yours fully restored.
I for one happen to enjoy the sound of non mechanical birds in the background whilst tube TVs crackle to life... underlined with a layer of Shango laying down facts.
The aviation noises - personally, I like them. I listen often with good headphones. Your camera mic seems to pick up sound very well. The aircraft noises add a spacial ambiance which is pleasing to my ear.
i love the airplane 0w0
@Eric Ruud BAMbulance...
They frighten me. They are private pilots. I knew a guy in college who took private pilot. He passed. But was so uncoordinated he couldn't drive a car into a garage without scraping the side and breaking off the side mirror.
Or the occasional bamblublance and the guy driving around with no muffler on his car.
@@jimw7ry Yeah, WTF is up with Shango referring to them as "blam-bulance"! I hold first responders, particularly in fire and medical, in high regard.
Thanks
Thanks!
Loved the birds chirping.
I had one just like this - or very, very close - in 1971. Found it by a dumpster when I was in college. Dead or problems. I forget. Pulled the tubes, took them to the drug store, found a bad tube and bought the replacement. Lasted about a month. Dead again or same problems. Figured there was something else going on and was way out of my expertise to deal with it. (Accounting major) I was at least savvy enough to figure that something else was going on to be croaking the tubes. Back to the dumpster. With a little more nicotine residue added for good measure.
I used to have this set. I used it through the 1980s. When I had it, it operated perfectly. I don't know whatever happened to it. The window in the channel selector knob would show the channel number. The would be a light bulb behind the window.
Wow, dig them whiskers
I love your videos, shango!
They're actually strangely relaxing.
Gibson used those Sprauge “Black Beauty” aka “Bumble Bee” capacitors in their guitars such as the Les Paul’s in the late 50’s until 1960. The vintage guitar guys want those old drifted capacitors because as you said they affect the tone control circuit. Supposedly Sprauge stopped producing the “bumble bees” in 1960,and afterwards went to black capacitors with the values in red on them. Gibson also used Astron capacitors in 1960.
as said in the video , if theres no dc across the caps in use purely for passive tone correction, i dont see any need to replace them. (or waxy caps). similarly in active circuitry if only across cathode bias resistors with only a few volts across them,
Yeah but guitar player’s only want .047uf Bumble Bee capacitors.
@@Route66Wanderer fake 'em, get some yellow tubulars and paint black, then paint the colour rings on 😜
If those are so special, why doesn't somebody reproduce them?
@@KameraShy theyre not special, just like most 'audiophile' stuff 😉
I vote for resurrection. Zenith. Bulbous tube era.
Love how you can actually predict what'll be frigated up the most just by analyzing the b+ swirly copper spaghett first man. Just in awe. I need a reorder.. u know what that is? lol nice work.
To funny, I love this channel so much!
I love how the airpane, just rolls off the tongue... as if the airpane was in the circuit. Makes me laugh every time. Thank you.
I think it is spelled, " Airpain". LOL
I always enjoy the birds, they are part of the experience.
Shango, in Zenith radio and monochrome TV chassis numbers the letter is the year. So an E vs an F in the chassis number means your looking at the previous year schematic for that market class of TV.
Many Zeniths of that era had a shutoff dot even when the CRT was good, just a design quirk.
This is a great memory for me. Growing up we had the exact set at our kitchen table. It had many many hours on it by the time it was replaced with a small Zenith color set. I hated when the dial lamp would burn out, then had to guess which of the 5 VHF channels I was watching back then. Occasionally the contacts in the tuner had to be cleaned too. My dad would only buy Zenith TVs. He was capable of repairing them too but the Zeniths’ rarely failed. Thanks for sharing that “portable” 😂 TV. Yeah portable if you had a small hoist.
We had a wooden cabinet zenith with that same dial...I loved spinning it when I was little. I think it was back-lit with numbers cutout
The "tin whiskers" are interesting if that's what they are. I wonder if tin whiskers are more prone to happen near high voltages?
Some folks have commented on asbestos but why would anyone protect a metal panel with asbestos anyway. The flyback cage was (I think) mostly there to shield users from the x-rays that the tube EHT rectifier emitted.
Good morning all!!!
It's an original CRT. Some of the later sets had CRT's that said "Zenith - Rauland Division".
I have a soft spot for these metal cabinet B/W TVs from this era. We had a turquoise Philco at a summer cottage that lasted a long time. I know my dad didn't want to buy anything real expensive in case somebody broke in during the off-season. This place was 40-50 miles from a transmitter but it was watchable on the single antenna. I think it lasted until the early 80s when it was given to a church for a yard sale. Pretty good for a Philco, but back then we didn't know that Philco was junk, just that it was cheap.
God Bless and Happy Easter, Christ has risen (on Monday)
I would definitely consider this a full resurrection. I mean you woke it back up with what was there. Nothing to spit at sir!
I still have the remote version of this set with a good crt - have to figure out a way to get it out west for you one day.
We had one like this when I was a small child, the revolving channel window was a great playtoy. Ours had an all metal case with a metal on/off/volume knob. At times it could be very "exciting" especially if you had the electric plug turned around wrong.
I had one like it when I was 13. It had a bad CRT. I found a replacement for it at the flea market for five dollars. The CRT was like new.
Ours was a 19" on a tall, tippy metal stand and with the power transformer, those things were heavy. If it had ever fallen, it could easily have killed a kid sitting under it.
OK, here's a crazy story from those times. My mother saw a "color TV screen cover" at the dime store, it was a transparent plastic sheet that had blue at the top, a mixture of colors in the middle, and brown on the bottom. You were supposed to tape it to the front of your B&W TV and watch TV through it, so you could pretend you had a color TV. It made watching cartoons on Saturday morning more fun. Back in those days, it did not take much to entertain a child. I don't remember seeing a color TV until 1970, they were just too expensive, no one could afford one.
Solved ,the voice of Columbo great work, great vlog 8:57
I completely lost it between all the Tweety birds chirping in the trees, and then the marble man starts talking about TV repair! LOL 😆
Epic Fuzz and baked, brings back memories...
The "bumblebee tone" can be most likely attributed to dielectric loss and dielectric hysteresis, If you put some capacitors on a curve tracer, they don't have a straight line, most obvious on ceramic caps where it's very non-linear.
Is that the Z5U type of dielectric? I remember back then when 0.47uF capacitors were the size of C cells, until I saw an orange square disc capacitor that was 0.47uF (at 25 volts). Amazing. Only much later I learned that the dielectric made them non-linear and microphonic as well.
4:00 That tube is so bugeyed for something in a portable B&W set. It almost looks like a 90 degree tube instead of the 110 degree tubes that Zenith used from '61 on with that slimline portable style that mostly disappeared when color sets took over.
Engineering gets us very close. But looking at the evolution of all CRT classes, nothing surpasses the value of field experience.
Oh, it's a 16" or 17" CRT; that's probably why it looks so pudgy. I had almost forgotten that 17" TVs were a thing. I never owned one, but if I had, I'd have felt a bit cheated knowing that a 19" would only have cost a few more dollars. Though, I suppose, on the average, a smaller CRT with the same chassis is likely to be less trouble prone.
I had a TV back in the 70s as a kid that left that dot in the middle for like 10 or more seconds after turning it off.
17:04 that reverberation sounds like a spooky noise from afterlife world. It is also spooky because there's no vertical and horizontal sounds))
I like it!
It would be interesting to see if that flyback coil could be rewound to achieve phase lock. Not too bothered about fixing all the other problems.
I agree, I think he has the parts and a CRT. But if no client is lined up to buy the TV after is repair then NO.
I acquired almost the exact same set about 8 months ago, tiny bit different same chassis and it has vertical issues I need to replace the bumblebee capacitors, I think that's what's wrong with mine.
Sango
You don't have to apologize. Say thank you very much for the rain. It is not obvious
I know it would be a hassle but it would be cool to see how the cathode winding failed on the flyback. As far as the picture tube it’s a Zenith. I would only replace if someone would offer a forever home.
That stuff in the EHT cage kind of reminded me of Asbestos Fibres and it was certainly full of like years of baked in dust as well.
Just for the fun of it, as you are not very interested in the set. Could you try to rejuv the crt with the beltron? Maybe there is not any life left on the crt... but it could be interesting to see what the different modes of the crt tester on a case like this can do though it wont last for too long.
I have a radio that one of the bumblebee caps exploded in. made a pretty nasty smell when it did, but kept playing at reduced volume in the time it took me to unplug it. I think it might have been the cap that connected to the chassis if I remember right...
Thanks again for a good quality video you do ,j attend tjrs les video de hamfest filmé par vous c est come si ont y etais je ne sais pas si c est bien exprimé en francais!! Merci encore
I completely lost it once you coughed and started doing your Paul Mall cigarette voice.
Interesting! The only metal case tv I remember us having was a 1967 Philco-Ford color Tv (tubes) on legs. The rest was either wood or plastic.
I believe most of the portables switched from metal to plastic at the same time they eliminated the mains transformer, since the shock hazard was much less serious with plastic. Then, after about 10 years, they mandated flame-retardants in plastic and "wood byproduct" cabinets to stop the sets from burning people's houses down. I still remember my neighbor's 1964 RCA console sitting out in the rain with a hole burned through the top; their next set was a metal-cased portable on a wooden stand.
We had a 1964 Zenith all metal. 19" on s roller stand. Still kicking myself for letting it go in the mid 70's. Wanted color when it went dark.
1:35 That's a huge transformer for that small Tee-Vee.
Probably draws 250watts
How times have changed.
I can easily picture somebody banging on that TV with their fist to get the picture to lock. And they probably managed it. Banging on it probably "fixed" the open coil, for a short time.
As for fixing it properly, if you can get a replacement CRT then maybe. Despite all its problems, it's really trying to work.
I’m currently working on a beautiful low hour 14N26 that’s experiencing some of the same problems. I got it from a tv repairman’s estate and picked up as many parts as I could fit in my car. Let me see if I have a flyback for your set.
The 14N Zenith chassis was basically in production for over 12 years without any major changes. In that period of time, Zenith sold more than 12 million of that chassis. Extremely dependable. Zenith Quality; built to last.
i would like to see you take a picture tube like that and rejuvenate it several times to see how good you can get it and if the picture tube burns out video over. do this after resurrection.
Perfection~!
On a set like this I always check the declotay voltage first
On the Lopty, does most of the power for the focus/Hv rectifier filament come from the forwrad cycle or the flyback.
They use it on guitar tone controls I believe
Dude you're breathing in the funk of 60 years of dust accumulation. There's 1960s and '70s smog in there too😅
i love those rolling side ways problems, sync seperator maybe ?? no horz lock
I’d pass on this one for a complete job. Though I would like to see a quick attempt at rejuvenation of the CRT using your best, (or all) rejuvenators. I’m also a decent size electronic simpleton just learning. I understand what a CRT brightener does but what’s the technical explanation for how it works? Great stuff you do for us.
All a brighter does is increase the filament voltage using a step-up transformer. This temporarily increases the cathode emissions until more of the cathode material wears away, or the heater gives out.
Got it. Thank you for the reply.
The "brighteners" I remember from ages ago were nothing more than a transformer that jacked up the filament supply by a few volts, causing it to run hotter & slightly elevate screen brightness, at the expense of using up the remaining cathode emitter material very quickly. It was a last-ditch palliative measure that might delay total CRT croakage for a week or a month. If you opened up a color set - especially the later ones with skinny CRT necks - and saw one of those already dangling from the socket wiring, it was like testing positive for pancreatic cancer. "Sorry, sir, but there's nothing else we can do except make funeral arrangements."
"Rejuvenator" devices seemed to operate on mostly witchcraft. The only one I ever saw that occasionally did some good was made by a company called Beltron. It had two very different operational modes, "restore" and "rejuvenate," the latter of which would make sparks fly inside the neck, as if it was punishing the electron gun into submission. Someone once explained that it removed accumulated inert material from the cathode surface by "boiling" it, thus restoring its emissive properties to some degree.
Thanks for your reply. I knew the brighteners were last ditch efforts to burn out a CRT that was done anyway but didn’t know the method. Shocking a CRT temporarily to revive it does sound plausible though if the inner materials just have some contamination. Similar to shocking a car battery and boiling it to knock sulfur off the lead plates and allowing the acid to again have good contact with the lead. Thanks for your vivid descriptions.
@Al’s Guitars Problem is that you can "strip" the cathode of the material, which makes it an efficient emitter of electrons. Plus, it typically doesn't last.
When the cathode is open, the cathode voltage will rise until the grid-cathode voltage is so negative that the tube goes into cutoff, and no more current will flow.
I like the vintage & the model. Too bad it is a bit rough.... I wonder if a better CRT and bezel from another would fit?
You gotta have add the nicotine glue to the packard bell to have a real idea. i see it on old computers, tar really makes the dust stick much more quickly and solidly
Zenith bought Rauland in the early 50's for a constant source of CRT's. They were
used along with Zenith jugs over the years. I think Zenith kept them indipendent
for some reason. Never seen any rhyme or reason what brand you would get in a new set.
Also they have different EIA ## Zenith is 343, Rauland 1101.
DRH.... would probably know.
LFOD !
Is there a list somewhere of EIA numbers? How do you read them?
those mains input plugs/'cheater cord' things werent really a thing here in the UK, except curiously by the UK division of Philco, until Thorn bought them out!
That must be the Zenith "motion Tv" model.. But it sure does display that diagonal line in sharp detail. The little weighted channel indicator window thingy is cool. Got Keppra?
2:28 I'm amazed that anyone would not have a cord for that; any old Norelco shaver cord or one from an old boombox will fit, though you might have to cut a notch between the holes to widen them a bit. On the other hand, if you've kept a set like that going for 60 years, you probably don't need the protection of the interlock.
Vintage cheater cords going for a lot of money.
Hahahaha that cigarette voice!! 😅😅😅
That voice you put on after sneezing reminded me of Roz from monsters inc
I bet Three Pack A Day Bertha watched her stories on daytime TV in a smoky haze on that set for years.
Yeah , bring it back to life . What else do have to do !
Explanation for why a weak CRT does the Doctor Strange Eyeball when power is cut?
I am curious also.....
When the picture is dim less current is drawn which means it takes longer for the high voltage charge on the CRT to get used up. It's not really a sign of a weak CRT, a strong CRT with the brightness turned down will do the same.
The old slower discharge trick!
Wonder if the home channel also has "Gunt Erase" ! 😂
The jug looks usable to me. Maybe the spot-killer circuit has quit working..? When those old beasts with the boat-anchor power supply transformer were turned off, the deflection circuits shut down before the residual charge on the anode bled off with the cathode still warm and emitting, and to compensate, the gun was supposed to be forced into zero-conduction grid bias so that the undeflected beam wouldn't "burn" the phosphor. There's probably a tiny blemish in the middle of the screen if you look at it closely. Not sure, but I vaguely recall that model with the funky channel selector backlight had a separate face shield and jug, as opposed to later ones where the two layers of glass were bonded like a car windshield. Which makes them more restorable than the latter, since the two pieces could be disassembled and cleaned (with extreme caution, since an un-bonded CRT implosion can be quite nasty).
That looks like the TV this old man in Houston tried to sell at an old auction house. With the lights out the picture was good. This nice old lady purchased the set against my advice. Needless to say, she brought back. I opened the back of it, and it had a string of brightener on it. Three to be exact.
Watching your vid gave me such a violent seizure that people started tying paint cans to me!!!!
I remember we had a RCA new Vista..it had 12 channels..the U was channel 39...I remember seeing KCST San Diego NBC when going up in L A...in the 1970s...I remember how i tried to figure out how to change the UHF station?..... very weird!😮
About those black beautys in guitars - they were used in 50s Gibson guitars, notably the Les Paul model. They are used as tone capacitors, for passive high roll off, to make sound of guitar more dark, mutfled, imagine classic jazz guitar tone. They also need to be specific walue not just any and I’m not sure the same ones were used in TVs.
That TV is the scratch and dent model.
Those valve's sure do glow bright. Go on fix it you know you really want to😊.
My Grandma had one kinda like that one channel knob was different, But they were built like tanks.
Grey dust vs brown dust.... My experience is the brown dust is cigarette smoke and grey dust is clothes fuzz or other... Growing up in a smoking house, the dust was brown. I don't smoke so all the dust in my own house is grey....
That thing looks like it was run for 40 years nonstop in Grandpa's basement while he smoked cigars and never once dusted or vacuumed the place.
...art piece~!
A brightener on a zenith?
shango.....make a half assed attempt..........flyback and Lock ONLY!
Go for it.
Every set we give up on is one less set in the world... Don't get me wrong, sometimes you have to let them go. but if it's reasonably savable it should be saved. Probably at this point only you would know that. I'd love to see it work again.
SHANGO I HAVE A 16D25 WITH A STRONG CRT BUT VERTICAL DEFLECTION ISSUE. IT WOULD PROBABLY COST A FORTUNE TO SHIP IT TO YOU. TOO BAD WE WEREN'T NEIGHBORS , WE COULD HAVE EOL PARTIES
CAPS LOCK?!?
I'm wondering if that flyback coil grounding the cathode is some sort of negative feedback setup. As to what to do with the telly. Up to you but if you don't have much love for the thing give it the send off it deserves with a Decollete EOL.
Top demais irmão, gosto muito.
FYI, guitar pickups generate millivolts of AC, frequency depends on strings plucked.
41:12 The "gentleperson" says, "There's just more options with a top and a bottom."
🤔
While it would be a great learning experience to repair this one, I'd suggest that money may well be spent on a better set.
Since that CRT is so weak it might be a candidate for a rejuv. Certainly got nothing to lose
Aren't there people here and there who rebuild them? It wouldn't be that hard with a B&W tube.
@@pcno2832 Not currently.
@@pcno2832 The last closed several years ago. All the equipment was sent to the early television museum in Columbus Ohio. But as far as I know they've never been successful at rebuilding a tube.
Oh yeah...the 38:00 part rulzz.
I remember dragging old tv's home that looked like this or worse inside. I'd tear them down just because and soon learned that was a bad idea because of the filth. My mom also put the kibosh on that. They stunk like cigarettes too
very greasy too
Don't you just love that flawless Zenith 6BN6 Buzzomatic sound, a true master piece of engineering. Come on Dan Fix The Thing Please!!! Sorry I got to shoot, I need go check my décolletage.🤪
For some odd reason, I don't believe the Zenith would buzz right out of the box. That would indicate something has changed since new. A misadjusted AGC will cause buzz; an alignment may be in order; adjust the buzz control, quadrature coil, etc. A design engineering flaw, although quite touchy, would generally not pass the quality or performance standard of this Zenith receiver. Nor would it meet the Zenith standard.
The feds are talking about banning all filamentary light bulbs in the coming months. So if you want to lay in a supply for your dim bulb tester I'd start doing it now. Although toward the band date you might get some tremendous deals on Bob's as they're trying to get rid of the current stock.
Massive upcoming lawsuits. I have how followed this since Trump became president, but the regulations from then were overturned. Before then, I collected massive supply of "incandescent" bulbs. Now, I prefer LED but still have my collection. Will Biden's Gestapo confiscate them?
I wish i had a 110v lamp. It would make a great inline fuse for my antique radio stuff
Is your décolletage down with Rybelsus?
I think you should fix it for the fun of it, Id like to see you at least try to fix the open coil on the flyback and see if you can at least get a stable picture