I'm a big fan of the shango066 method of repair which specifically avoids "shotgunning parts until it works". I appreciate him taking the time to share his expertise with us, especially the detail he goes into concerning his thought process as he explores the circuit to find the failure(s).
After close inspection, it's *very important* to obtain an operating baseline of any vintage electronics that needs to be repaired. Indiscriminately throwing caps at it doesn't necessarily solve the problem. I *would* however inspect the electrolytic caps in the power-supply circuit before power-on, though.
A million dollar quote from shango066 "Conventional wisdom is also often stupidity." Master tech, explorer, life coach... is there anything this man can't do? I mean besides tolerate fools of course.
Your diagnose and trouble-shooting process as apposed to just throwing parts at it type repairs are awesome Shango. Learn so much more and im sure it's why so many people like these type of videos on your channel.
I express my deep gratitude for your creation of this video, as someone who is 17 and trying to get into vintage electronics and having a few sets of which when I eventually get to repairing them have this issue.
Shango, as always what a great informative video!!! I have seen many TV's fail from this working in people's houses doing cable, and it was always shocking to see how many folks would throw a TV away for it (Even some "higher quality" plastic crap) - Sadly nobody wants to take the time to have something serviced, and have something last. The nation of throw it away when it breaks is why servicemen aren't valued anymore.
kirbyyasha So true. A very throw away world we live in as people have more money then sense & would rather go out & buy new, instead of repairing the old! I still use a old CRT tv in my house daily. Because it's old doesn't mean it should be thrown out because it's not a HD flatscreen! When it eventually dies as the CRT is starting to show it's age, I'll retire it.
Another great video, Shango!! I like these sets as well. Had one in there early 1970s when I was cutting my teeth in electronics repair. That one had LV issues. Eventually the CRT faded out.
Thanks for the video. Growing up as a kid I had run across TVs with the same trouble. I would say I had about three TVs with the same trouble. You have answered a fifty year old question. Thank you.
Another wonderful video! Vertical circuits are very interesting. Love seeing the TV come to life again. You are so amazing not only in what you know but in tackling difficult projects. You're 3k miles away and I always look forward to your insight. Looks like I'm never going to make it to LA so if you want to produce a video of the Hollywood sign I'll bet it would be fabulous. I already enjoy your road trips! Thanks
But vertical circuit in this TV is not designed very smart. Multivibrator workes across both tubes - triode + pentode. There were better designed vertical circuits, where triode itself worked as multivibrator + sawtooth generator and pentode only as power amplifier with S correction. This design had less problems with vertical linearity and it was easier to repair.
Looks a whole lot better from where you started. What's funny now that now everyone looks like "Eraserhead" or "Herman Munster". When I do repairs, I always check "new"components before using them. By the way, I love "Sencore" stuff! I have a few pieces and they are simple, reliable, and accurate! Great vid!
However they are designed or what the problem I enjoy you going though the repair process. Face it, when you decide you are going to fix a circuit consider it fixed. When I serviced TV's, vertical failures were among the most difficult to fix. You add things to the description of what you are doing the text books don't. Also love how you warn against placing a meter on the Horizontal or the Vertical plate and the method of doing the testing safely.
Nice Vintage Set capacitors in the shape of a form of a capsule never seen that before I like how you go over and explain things and find the cause of the issue and get it working✌✌🤘
This failure mode is still good for one thing, playing the Mission Impossible theme! Well hey, the vertical sounds like the Noisy Cricket! Nice! Thanks for the interesting diagnosis video!
TheFurriestOne after watching this video, I now know what that buzzing cricket noise is. I use to own a old wooden chassis 70's PYE set that had the separate UHF & VHF dials on the front & it was my bedroom tv. Could hear that noise while it was on, sadly it died 4 years ago from a weak CRT.
Yup! Sorry to hear it died, but there's only so many hundreds of hours a set can provide before something goes out. Fortunately there are thousands out there in the world, in various levels of functional.
Who would have thought? All vintage old caps and a nice pretty orange one in there. One would think right away, the orange one can't be at fault, it looks new! NOT! Amazing that was the one holding up the circuit.
Vertical deflection failure is so common because of gravity... duh... It's more stressed than the horizontal. If you were lifting and lowering a beam 50 or 60 times a second you'd wear out pretty quick too.
Godfrey Poon I tend to think horizontal problems are a lot MORE common, but the problem is, when you lose horizontal, you also lose high voltage for the raster. Then you have to verify the function of both the horizontal and flyback. And make sure the picture tube isn't totally dead.
This is all i need to complete my monday nights entertainment excellent video shango, also isnt it strange though, i never actually watch television. In english sets all those controls are inside on a PCB
In 60s V-hold and V-size were not part of "advanced setup". Tubes emission fall down when they are used long time. So it was necessary to adjust V-hold and V-size time to time as tubes degraded. Czechoslovak (Tesla) tube TVs had V-size, V-linearity and V-hold accesible on back cover (50s and early 60s models also had H-hold (line frequency) accesible). Early transistor TVs had only V-hold.
Mil spec VTVMs are awesome. I still have a ME-26 D/U I'm restoring and getting working again. Now I'm trying to make a probe tip for the A/C probe since it's missing. According to literature I read somewhere that the bandwidth for these things is almost 1Ghz. Crazy...
i got a 1978 panasonic quintrix that belonged to my grandfather. someone bent the vertical adjustment and desoldered one joint and now it has the same problem.
It's interesting that there was a failure of the replacement cap in the feedback loop between the grid and plate of the 10CW5 tube. Those orange gum-drop capacitors almost never go bad like that, as they are usually quite reliable.
The 10cw5 really would work perfectly as an audio output tube. In fact it was used as that. 10cw5 would be the LL86, Philips used the el86 in a row of otl amplifiers with 800ohm speakers. Other tubes often used for audio that are the same as the 10cw5 /LL86 except for the heaters were the UL and PL84
Amazing - I never saw an orange drop short like that. I wonder if it was defective from the factory, and the repairman didn’t realize it and just gave up. The set was not worth fixing by the late seventies.
You got it working, but I'm a little skeptical about the failure mode. Orange Drops are some of the most robust capacitors ever made---the only time they fail is from voltage spike or extreme overcurrent. I'm thinking that the original cap replacement worked for a little while, until something shorted it out.
I have a Magnavox small screen B&W television, same era, 68 with television deflection issues. I do have the schematic. My question, how can I measure voltage, I do not have that type of voltage meter? Can the transformer be ohm tested for open coil?
maybe you might be the only one who can help me. I have an old black and white WEBER brand tv that has the exact same horizontal line problem that suddenly appeared where it was playing. Unfortunately I couldn't find the electronic diagram anywhere. It has 12 tubes. With a visual diagnosis I believe the problem is a PCL84 Tube that looks bad. But I'm not sure it's for the vertical scan. There is also a PCL82 Tube but I think it is for the audio output. I would really appreciate it if you could help me.
Amazing something almost 50 years old can have a single capacitor swap and still be used to to watch tv. It's not perfect but it's usable enough for modern garbage tv programming.
Hmmm, you have Fox 11 & we have Fox 8 here on Foxtel. Similar shows too, I think & we also have Fox News & CNN. Also we get Daystar which I did notice once in one of your videos on your Direct tv.
I have a few of those oil-filled 1600v Elna electrolytics lying around.. maybe I should test them? BTW have you ever seen TDK tubular ceramic capacitors? I have an old TEN/Kobe Kogyo 5-tube "drugstore radio" (actually one of the better built ones) which is full of them. I thought they were hollow thin-film resistors at first but they turned out to be ceramic capacitors.
Find it funny when i read its always the caps so people run out replace every single cap and find the faults still the same. I guess what ever you read on the internet is true then lol
Interesting. Anybody else see what looked like Jerry mouse in the center of the bottom of the screen when he turned it to crosshatch and dots. It looked like the image was burned into it or was it part of the signal being set to the TV from the machince?
Wow, the end of the video, so apropos. Images of protest and civil rights movements is often associated with vintage tvs. So it looks like a vintage news clip, then you hear Trump's name. Shango066 is asking, "Have we really progressed as a society, or have things remained the same?" You deep man, you dropping social commentaries disguised as tv troubleshooting. 😁
![[DRAGON BALL LEGENDS REVEALS ＆ STUFF] LEGENDS FESTIVAL 2024 Special Edition Part 2](http://i.ytimg.com/vi/af0phKxitX8/mqdefault.jpg)
You are the master in fault diagnoses in TV's and radios. Keep those excellent video's coming.
Indeed, bow down to your master, you pathetic little man.
I'm a big fan of the shango066 method of repair which specifically avoids "shotgunning parts until it works". I appreciate him taking the time to share his expertise with us, especially the detail he goes into concerning his thought process as he explores the circuit to find the failure(s).
After close inspection, it's *very important* to obtain an operating baseline of any vintage electronics that needs to be repaired. Indiscriminately throwing caps at it doesn't necessarily solve the problem. I *would* however inspect the electrolytic caps in the power-supply circuit before power-on, though.
A million dollar quote from shango066 "Conventional wisdom is also often stupidity." Master tech, explorer, life coach... is there anything this man can't do? I mean besides tolerate fools of course.
Your diagnose and trouble-shooting process as apposed to just throwing parts at it type repairs are awesome Shango. Learn so much more and im sure it's why so many people like these type of videos on your channel.
I express my deep gratitude for your creation of this video, as someone who is 17 and trying to get into vintage electronics and having a few sets of which when I eventually get to repairing them have this issue.
Shango, as always what a great informative video!!! I have seen many TV's fail from this working in people's houses doing cable, and it was always shocking to see how many folks would throw a TV away for it (Even some "higher quality" plastic crap) - Sadly nobody wants to take the time to have something serviced, and have something last. The nation of throw it away when it breaks is why servicemen aren't valued anymore.
kirbyyasha So true. A very throw away world we live in as people have more money then sense & would rather go out & buy new, instead of repairing the old! I still use a old CRT tv in my house daily. Because it's old doesn't mean it should be thrown out because it's not a HD flatscreen! When it eventually dies as the CRT is starting to show it's age, I'll retire it.
"Look at his forhead. That is definitely a capacitor problem."
I guarantee Shango was the only one who tuned into the teen choice awards with a tube-type black & white set that evening lol.
You should do more of these educational videos, I liked very much, specially the multimeter
Another great video. Love these longer going ones.
Another great video, Shango!! I like these sets as well. Had one in there early 1970s when I was cutting my teeth in electronics repair. That one had LV issues. Eventually the CRT faded out.
Thanks for the video. Growing up as a kid I had run across TVs with the same trouble. I would say I had about three TVs with the same trouble. You have answered a fifty year old question. Thank you.
Another wonderful video! Vertical circuits are very interesting. Love seeing the TV come to life again. You are so amazing not only in what you know but in tackling difficult projects. You're 3k miles away and I always look forward to your insight. Looks like I'm never going to make it to LA so if you want to produce a video of the Hollywood sign I'll bet it would be fabulous. I already enjoy your road trips! Thanks
But vertical circuit in this TV is not designed very smart. Multivibrator workes across both tubes - triode + pentode. There were better designed vertical circuits, where triode itself worked as multivibrator + sawtooth generator and pentode only as power amplifier with S correction. This design had less problems with vertical linearity and it was easier to repair.
Thanks for making your videos. I always enjoy them, even if I don't get around to commenting on them.
Amazing that Sprague poly orange drop was dead shorted like that. You almost never see that.
-waz up brad lol now its time 4 ur nxt video hahaha. have a great day
haha. Hi Ken. Just uploaded one playing with a thermal imaging camera.
Nice troubleshooting. Nailed the failure right away.
Looks a whole lot better from where you started. What's funny now that now everyone looks like "Eraserhead" or "Herman Munster". When I do repairs, I always check "new"components before using them. By the way, I love "Sencore" stuff! I have a few pieces and they are simple, reliable, and accurate! Great vid!
Love your Old School Testers...
Great video, as usual. Love that thermionic glow of all those vacuum bottles....
just very intersting video because are extreme old tv almost 50 years thanks for making this videos i enjoy watch them keep doing
I don't think I've ever seen one of those Sprague capacitors short and it just proves that anything can happen.
well they will fail if they are being fed the wrong power due to other parts failing.
radiotvphononut would be nice if you posted more repair Video's I learn so much from you and shango
Synthematix, that was my thought as well. Orange Drops are extremely reliable---something shorted it out.
However they are designed or what the problem I enjoy you going though the repair process. Face it, when you decide you are going to fix a circuit consider it fixed. When I serviced TV's, vertical failures were among the most difficult to fix. You add things to the description of what you are doing the text books don't. Also love how you warn against placing a meter on the Horizontal or the Vertical plate and the method of doing the testing safely.
Nice Vintage Set capacitors in the shape of a form of a capsule never seen that before I like how you go over and explain things and find the cause of the issue and get it working✌✌🤘
This failure mode is still good for one thing, playing the Mission Impossible theme!
Well hey, the vertical sounds like the Noisy Cricket! Nice!
Thanks for the interesting diagnosis video!
TheFurriestOne after watching this video, I now know what that buzzing cricket noise is. I use to own a old wooden chassis 70's PYE set that had the separate UHF & VHF dials on the front & it was my bedroom tv. Could hear that noise while it was on, sadly it died 4 years ago from a weak CRT.
Yup! Sorry to hear it died, but there's only so many hundreds of hours a set can provide before something goes out. Fortunately there are thousands out there in the world, in various levels of functional.
TheFurriestOne Yeah it was sad when it died as I had it since I was little & still had it well into my adulthood too but it had a good life.
That's an impressive run, they don't make 'em like that anymore!
Great video, thanks for not replacing all the caps
Congrats on the 25K you surely earned it.
Who would have thought? All vintage old caps and a nice pretty orange one in there. One would think right away, the orange one can't be at fault, it looks new! NOT! Amazing that was the one holding up the circuit.
Vertical deflection failure is so common because of gravity... duh... It's more stressed than the horizontal.
If you were lifting and lowering a beam 50 or 60 times a second you'd wear out pretty quick too.
So if you turn your TV on its side, it will last longer? What does an electron bream weigh?
Godfrey Poon
I tend to think horizontal problems are a lot MORE common, but the problem is, when you lose horizontal, you also lose high voltage for the raster. Then you have to verify the function of both the horizontal and flyback. And make sure the picture tube isn't totally dead.
You rotate it periodically to keep the electron dispersion even.
Godfrey Poon lol
Sears product number starting with 562 = Toshiba built set.
thanks for the videos, shango066. You're a real ole' troubleshooting electron gun slinger.
You are the best.
Another great video.
All the best
This is all i need to complete my monday nights entertainment excellent video shango, also isnt it strange though, i never actually watch television. In english sets all those controls are inside on a PCB
Are they really inside in 60s and 70s models?
In english sets yep, all the advanced setup adjustments are inside on a designated pcb
In 60s V-hold and V-size were not part of "advanced setup". Tubes emission fall down when they are used long time. So it was necessary to adjust V-hold and V-size time to time as tubes degraded.
Czechoslovak (Tesla) tube TVs had V-size, V-linearity and V-hold accesible on back cover (50s and early 60s models also had H-hold (line frequency) accesible). Early transistor TVs had only V-hold.
Cool, now I have a direction to go for fixing my CRT oscilloscope that has a similar problem.
Mil spec VTVMs are awesome. I still have a ME-26 D/U I'm restoring and getting working again. Now I'm trying to make a probe tip for the A/C probe since it's missing. According to literature I read somewhere that the bandwidth for these things is almost 1Ghz. Crazy...
Great video!!! Really comprehensive.
i got a 1978 panasonic quintrix that belonged to my grandfather. someone bent the vertical adjustment and desoldered one joint and now it has the same problem.
It's interesting that there was a failure of the replacement cap in the feedback loop between the grid and plate of the 10CW5 tube. Those orange gum-drop capacitors almost never go bad like that, as they are usually quite reliable.
Chet Pomeroy
I think those, and the "brown drop" caps were early plastic film caps.
The 10cw5 really would work perfectly as an audio output tube. In fact it was used as that. 10cw5 would be the LL86, Philips used the el86 in a row of otl amplifiers with 800ohm speakers. Other tubes often used for audio that are the same as the 10cw5 /LL86 except for the heaters were the UL and PL84
Great video! Could you do one on troubleshooting the horizontal oscillator and loss of HV?
Funny little tv. Those scratches? on the screen would get annoying after awhile. It's a shame they are on there as it's a cool little set.
I almost thought my crt was dirty until i realized that
Federico Ramirez I kept cleaning the screen on my iPhone thinking it was dirty. LOL
shango
nice job like always
:-)
Amazing - I never saw an orange drop short like that. I wonder if it was defective from the factory, and the repairman didn’t realize it and just gave up. The set was not worth fixing by the late seventies.
love the tv/radio videos
You got it working, but I'm a little skeptical about the failure mode. Orange Drops are some of the most robust capacitors ever made---the only time they fail is from voltage spike or extreme overcurrent. I'm thinking that the original cap replacement worked for a little while, until something shorted it out.
Excellent video!!
Great vid..very insightful
very interesting Shango...thank's!
Usually when that tube gets hot and you have poor deflection. its a short to the .0022 or something similar
great diagnosis video!
beautiful set!
Definitely, a "Bodge Resistor" replacement!
I have a Magnavox small screen B&W television, same era, 68 with television deflection issues. I do have the schematic. My question, how can I measure voltage, I do not have that type of voltage meter? Can the transformer be ohm tested for open coil?
maybe you might be the only one who can help me. I have an old black and white WEBER brand tv that has the exact same horizontal line problem that suddenly appeared where it was playing. Unfortunately I couldn't find the electronic diagram anywhere. It has 12 tubes. With a visual diagnosis I believe the problem is a PCL84 Tube that looks bad. But I'm not sure it's for the vertical scan. There is also a PCL82 Tube but I think it is for the audio output. I would really appreciate it if you could help me.
Very helpful thank you!
I am just curious, how are you able to test the capacitors "In Circuit" they don't have to be removed to test fully?
nice job my freind
Amazing something almost 50 years old can have a single capacitor swap and still be used to to watch tv. It's not perfect but it's usable enough for modern garbage tv programming.
What model Is that pioneer behind the TV?
Hmmm, you have Fox 11 & we have Fox 8 here on Foxtel. Similar shows too, I think & we also have Fox News & CNN.
Also we get Daystar which I did notice once in one of your videos on your Direct tv.
And a Bodge cap?
please tell me how can u finde Accessories for dmage things
43:10 Lookin' good!!!
43:34 how do you get rid of this garbage from the tv?
So how much would something like this sell for?
"Percussion maintenance" :)
I died 😂
your the best
6:36 what's with the baby doll by the TV
Good job! 👍🎃👻
Thank you!
I thought you couldn't test caps for leakage in-circuit. At least if you expect a correct reading.
Rca ctc 15 16 and on always seem to have the worst vertical cercuts
I have a few of those oil-filled 1600v Elna electrolytics lying around.. maybe I should test them?
BTW have you ever seen TDK tubular ceramic capacitors? I have an old TEN/Kobe Kogyo 5-tube "drugstore radio" (actually one of the better built ones) which is full of them. I thought they were hollow thin-film resistors at first but they turned out to be ceramic capacitors.
43:10 but the trump looks perfect on this tv....
If you're trying to adjust their brightness... You'll have to wait a few thousand more years.
39:13 nothing but the best. :D
👍
Find it funny when i read its always the caps so people run out replace every single cap and find the faults still the same. I guess what ever you read on the internet is true then lol
Hi Shango 066 from phoenix Arizona the desert
Interesting. Anybody else see what looked like Jerry mouse in the center of the bottom of the screen when he turned it to crosshatch and dots. It looked like the image was burned into it or was it part of the signal being set to the TV from the machince?
scratches on the glass I think
Will the circle be unbroken? Only if the capacitors are good! 🤣
that tv more 40 years
You cant red plate a vertical output circuit with loss of oscillator its not an A class amplifier
Hi love your videos. do you no. look like your meter is not o out. keep vid coming.
I dont know, in almost all your videos a total recaps seems worth it. why not to loose time and go directly with that?
In the case of this poor old set, not worth it. Too much time, too much expense. Unfortunately. Anyway, troubleshooting this way is more fun.
so that you can learn.....
Maybe next time you can show Hee Haw rather than the teen awards? :)
but then when u actually have a 16/9 tv the bars are still there.
Wow, the end of the video, so apropos. Images of protest and civil rights movements is often associated with vintage tvs. So it looks like a vintage news clip, then you hear Trump's name. Shango066 is asking, "Have we really progressed as a society, or have things remained the same?" You deep man, you dropping social commentaries disguised as tv troubleshooting. 😁
Great repair,but nothing but junk to watch.
If i watch the tube am i therefore a boob😞
@6:36 ......Bejesus....out of you.
don't know how you live there