Yunost R603 soviet TV teardown and restoration 3

I finally managed to fix this vintage soviet TV set - Yunost R603 (Юность Р603) from 1981. I replaced some faulty paper capacitors that changed their capacitance very significantly. I tried to replace the germanium horizontal output transistor using a modern one, but it didn't work, so I used a new old stock one. Then I explain how does the horizontal synchronization and the horizontal output circuitry work, including the S-correction capacitor and the linearity coil with permanent magnets. I generate a test television signal and modulate it using a simple 1-transistor modulator. I show some oscilloscope waveforms.
Episode 1:
kzbin.info/www/bejne/mKTJlYhnYrWbaZY
Episode 2:
kzbin.info/www/bejne/oGirc3mwg991fqs
My DIY Atmel oscilloscope:
danyk.cz/avr_osc_en.html
My DIY TV modulator/transmitter:
danyk.cz/tvvys_en.html
Please support me on Patreon:
www.patreon.com/DiodeGoneWild
My Instagram:
savage_danyk

[@ngc253]

I love how you simplify everything! Finally, someone to explain things without his audience falling asleep.

[@confusedredditor1660]

reply where

[@pebasics]

What's going on here?

[@confusedredditor1660]

@@ngc253 general Kenobi

[@nevellgreenough404]

Fantastic description of the linearity corrections in the H & V circuits!

[@tvishmaychoudhary69]

I waited for this restoration I really liked this series!

[@regulareverydaynormalguy6479]

Hello danyk ! I'm a big fan of your KZbin channel and website. Can you please make a video about yourself to tell which education you've got and which jobs you was working. I'm just finished electrical engineering studies and looking for a job in the power electronics field. Your videos are really helpful and enjoyable to watch, and I'm sure if you will share your story it will inspire a lot of young engineers. Thanks a lot !

[@worroSfOretsevraH]

You should definitely do more CRT TV theory videos like this!

[@WagTsX]

my gosh, so many technology into these CRT stuff, always make me think of how much experimentation and error the first tv had in order to become usable and commercially available. Also loved your tray of capacitors 4:24 and transistors 7:08, that may explain what you did in your formerly free time

[@1pcfred]

TVs evolved over time. The first sets had very small tubes. So over time as the TVs became more powerful I guess they could figure out what they needed to do in order to increase performance. It was an iterative process.

[@godfreypoon5148]

Like most things, it's merely a collection of smaller simple things.

[@SeanBZA]

@@1pcfred True, monochrome sets are very simple, as the standard put the most complex parts in the transmission side. Inverted video, so the noise would show up mostly as black and not peak white, and simple oscillators that were phase locked to the transmitter, and slow capture rate to make noise not show as jitter. Also sound on a defined subcarrier, so recovery was easier, and far enough away to both not get sound on vision with loud sound, and no vision on sound buzz with fast changing scenes. Well in the most part, but the early ones, with no ceramic filters or SAW filters, you always had a compromise, but it worked well enough, with just a single LC trap in the right places. Telefunken experimented with getting the tube count down, putting multiple stages, complete with the resistors and mica capacitors, into the same glass vacuum envelope, but they ran into issues with this, low pressure meant lots of arcing, and they were hard to manufacture. But they did make sets that were only 2 or 3 tubes total, with one doing the RF, IF and sound all in a single glass envelope, and the others doing the rest of the set. But they gave up, too expensive to manufacture, and too high a reject rate.

[@1pcfred]

@@SeanBZA they say black and white is a sharper picture. I don't miss old CRTs. HD LCD is definitely an improvement.

[@1pcfred]

@@godfreypoon5148 there's a lot of cleverness going on in those smaller things. That choke with magnets I'd have never come up with something like that.

[@Alchemetica]

Your explanation of how things work is excellent. This TV repair was most interesting. Thank you for the video.

[@DrHouse-zs9eb]

19:46 very cool budget-slomo! I already thought "how can he afford such an expensive camera?" :D

[@ozzymandius666]

How did he do it?

[@AndreCotrim616]

@@ozzymandius666 He explains it in the video - exploiting the aliasing phenomenon, armed with a 50 fps camera with very high shutter speed (1/16,000 s - that's faster than one scanline of the TV which takes 1/15,625 s) and with the knowledge that the 50 fps in the camera doesn't exactly match the 50 fps on the TV. What we see in the video is the slight difference in frequency between the camera and the TV, as in each frame the camera catches the electron beam of the TV in a slightly different position.

[@Dangr1238]

Niiiiiiceee

[@MiguelBaalm]

Heyyy! I found this early on your "CRT tube devices playlist". Easter egg time! =D

[@Conservator.]

Haha, you hacked DGW’s system.

[@RicoElectrico]

16:47 Apparently DiodeGoneWild is such an electronics god that he can build RF circuits on a crappy breadboard and it still works. He didn't get the memo not to do so ;)

[@theschnilser7962]

I know of a small German YT channel who commonly does so, too. Besides, I like to build them right in mid-air, just soldering the components together, without a board or anything.

[@stanimir4197]

Here 24GHz sine wave oscillator on a breadboard (his DMM tests like 15kV transients are even more interesting):: kzbin.info/www/bejne/r4OchaqbjMtmrZo

[@theschnilser7962]

@@stanimir4197 Yeah that's nice and all, but I basically consider everything above like 100 MHz being witchcraft. You know what I mean?

[@vaclavtrpisovsky]

@@theschnilser7962 >above like 100 MHz So FM radio in Japan is all reasonable, but half of the international range is witchcraft? /s

[@stanimir4197]

@@theschnilser7962 no disagreement on the witchcraft part. Although Mr. Diode's version didn't reach 100MHz... so it's ok?

[@SeanBZA]

Room enough to build your Atmel scope into the case though, as you should have enough spare current in the power supply to do the 100mA it needs. Remove tuner, make it fixed tuning, and you will have room to put the switches into the hole, or simply remove tuner altogether and build a buffer, to provide the inversion and voltage gain, to drive the video and deflection circuits. At least you will get a higher bandwidth on the display, sharper edges as there are no tuned circuits to slow them down.

[@antibrevity]

Loved the thorough series on this TV. Thanks.

[@krahaborowski]

you are able to present more information in a (relatively) short video, than my memory is able to hold in total!

[@CheapCheerful]

My new favorite channel. Hello to the Czech Republic from Australia :) You guys built my car, and it's awesome!

[@leeselectronicwidgets]

Thanks for this great series, more please!

[@edgeeffect]

Oooh.... video(s) about TV modulators and signal generators would be FANTASTIC.

[@Span4erSpark]

That was incredible and educational! Thank you! A video about the humidifier would be great! I had one myself, the cheap version with a one-sided PCB even without soldermask. Humidity often gives short sircuit and it stops working, as it happened to mine.

[@kemalkurt5257]

It is fascinating how those crt tv's have such complicated circuitry.

[@andygozzo72]

that one does look complex, looks all discrete, but many used ICs to reduce part count

[@iz8dwf]

great idea to use the brightness pot for on/off switch! Best "no spot" circuit ever! :)

[@Starter61]

Excellent video, made me miss old black and white CRTs !

[@abdultech9890]

Awesome, Great job and great explanations, I wish to see a real video on that CRT TV to remember the old days and to see how the picture will look like.

[@hugoegon8148]

Very good explained, thanks.

[@TheSalemSaberhagen]

Obdivuji tě, že věnuješ tolik času zprovoznění takového starého střepu. Ale každá práce, když se povede, tak potěší. 👍

[@Pirelli.]

😯 19:44 That was exactly my thought 😊 28:07 And a big hug for your DOG 🥰 Thank you Dany and stay safe!!!

[@klydolph2]

I once talked to a repairman who said getting 240V mains through the fingers was an almost daily routine. But he once got shocked from a TV HV. He said he had to sit down and breathe for 15 min then.

[@msansjr]

Once I did not discharge the tube completely (there was arcing but I did not fully touch the terminal) and I can attest that it is a mule kick. My arm became numb for a few minutes.

[@uwepolifka4583]

Nice. And the next project is to build an analog TV Transmitter for testing old TV...

[@anoimo9013]

anazing explanation of complex subjects

[@MiguelBaalm]

Very nice video!

[@wdujsub7902]

Black magic . These old analog devices always Blow my mind

[@cuf_]

7:51 thats how you know that he is experienced, he is sticking his hands into that running high voltage power supply with no doubts!

[@godfreypoon5148]

3:37 Their symbol for their capacitor is a shorted capacitor... A good omen, surely.

[@RobotN001]

or one turn inductance in resonance circuit )))

[@elyeryan8838]

Its a logo of some capacitor factory

[@ilSySTeMli]

Awesome video ,Please do make a video about analog tv signal generators (its a very convoluted topic) it would be awesome to see more details of your atmel oscilloscope too ,tnx

[@DanielStingBR]

O lot of knowledge, niiice!

[@rudhierd]

He smart about electronic theory .. good job

[@mfbfreak]

In general, paper capacitors increase in capacitance over time. I have never seen them decrease (though perhaps that's a failure mode if it is metalized, self healing paper rather than the 'normal' roll of paper and aluminium foil). The increase in capacitance and leakage is because traces of acid in the paper, slowly break down the paper, making it thinner.

[@thisone1697]

Agree.

[@user-zq7cg6ud6j]

В следствии деградации диэлектрика диэлектрическая проницаемость среды увеличивается, следовательно и ёмкость увеличивается.

[@michvod]

Yes, usually the leaky capacitors will show much higher capacitance. I recently measured some from the 1960s and they showed 4uF instead of 0.25uF. I read on some forum that you can "heal" the leaky paper capacitors by boiling them in hot wax for an hour, but this was meant for caps that were in metal boxes that you could remove the innards and boil it, not the sealed ones like in this video.

[@michvod]

Another quirk, the USSR actually produced paper in oil capacitors that were hermetically sealed. They are in ceramic tubes with metal ends. I have few of them and they are still 100% perfect with no leakage even at 1KV, despite rated at only 600V and have datecodes of 1964 and 1965.

[@nicklaich]

I heard they burn out part of foil when electrical breakdown happens, and still work.

[@naturesstressrelievers9824]

i like this channel, techy.. super informative about electronics, I'm researching about my dell charger..on your other video about chargers.

[@lmwlmw4468]

Great video.

[@kowaldrums]

Idea for next video ? Comparsion between black & color TV circuits :)

[@cameron20020]

this is so cool!

[@stoyandimitrov9352]

Wish I had this video when attending the television classes back in the university

[@martinlintzgy1361]

Love the accent. That scope looks pretty ancient...

[@keiiko]

There is actually still analog TV broadcasting in exUPC (newly Vodafon) cable tv in Prague, Brno and other locations (or were), just a few channels form ČT, Nova, Prima and Barrandov. I checked it a year ago, so Vodafon migh've turned it off. Also there is this Litovel area that have (had) still big analog TV list due to technical reasons. Some info I noted in 2019: "V roce 2018 začalo postupné rušní analogového vyílání. Analogová nabídka MINI obsahuje cca 15 tv kanálů, kmitočty a jejich skladba se mírně liší dle lokality, vysílá se v pásmu VHF a UHF. V některých lokalitách, kde není dostupná nabídka digitální televize, je nabídka analogové televize širší, o nabídku A-Klasik. Kromě TV kanálů jsou v síti UPC šířena i analogová rádia v pásmu FM. 25.9.2019 bylo oznámeno zrušení monoskopu."

[@astrazenica7783]

It receives some radio! Mad.

[@isoslow]

What about making a better analog TV modulator and explaining it's blocks?

[@widyahong]

even with breadboard you have nice component placement, some day maybe you will make video about programming atmel avr without arduino ide :)

[@milanlazic6640]

Please, Diode, could you explain complete schematic and how Crt tv works

[@elecrticityelectronics8591]

We would like to see some modern russian electronic circuits and components. .... TV sets, PSU .etc Thanks. As usual, nice vid.

[@valdisblack1541]

Source code in assembler?! Maniac.

[@andreasproteus1465]

This is my favourite electronics vlog. My second favourite is shango066. I hate that Australian with the shriek voice who is always pushing product.

[@JohnnyX50]

I would love to see you build a test pattern generator for an RF input to an old analogue tv. I have an old 24inch Hitachi colour TV that I would love to use as maybe a prop in my room where I want my computer, so to be able to send the TV signals would be awesome. It also has the remote and is TeleText FastText enabled to use the 'red green yellow blue' buttons. Something that could inject the required code into an RF signal so you could use/make custom Teletext pages would be even more awesome. I cant find anything on google but I bet you could whip something up in minutes :D I imagine an RF signal with a picture of your favourite fire extinguisher on screen then when you press 'Text' on the remote, Page 100 would have your logo and info displayed and maybe a crude KZbin logo in the middle and text asking to subscribe. No idea how Teletext worked but Im sure you could figure it out :) Much love, JP x

[@kyle8952]

I'd love a video on TV modulators. Your simple design has no sound... Would be interesting to see you go through all the steps to suppress left sideband, harmonics, make audio sub-carrier, impedance match the stages etc

[@stanleywhiteman6450]

Спасибо

[@FrancisLitanofficialJAPINOY]

TV channels 4 and 5 are also overlapped with FM radio (85.25+91.75 Mhz, 93.25+99.75 MHz). TV channel 3 same as Chinese TV channel 4 and US TV channel 5 (77.25 MHz video, PAL/SECAM-D/K system sound carrier of 83.75 MHz, 81.75 MHz for system NTSC-M, PAL-M, PAL-N.

[@NeonSciFi]

If you want to test it, come to Bosnia, there is still analogue television broadcasting ;)

[@filipgugo5296]

Bosna obecana zemlja

[@skyoreece9805]

What happens if you can't get a jerainium transistor, and have to use a modern one, how would you go about that thx

[@jefftheanimal]

Valeu!

[@astrazenica7783]

The Jack Russell looks just like my old dog 😢. Tikka was crazy but I miss her

[@techtinkerin]

Cool vid! Maby you could use it with VCR or old computer like commodore 64, spectrum etc😊❤️

[@dellodel9502]

Can we convert a CRT TV to a DSO (OSCILLOSCOPE)?. OR How to controle the horizental and vertical cursor ? Thanks .

[@nikiamz6501]

Everything in made in USSR is made to last forever!

[@ProdigalPorcupine]

Except communism...

[@volleswerkfullorganpower249]

More video how tv work! 🙂

[@gacherumburu9958]

👍👍

[@Leon-ts1nl]

28:43 That would be so cool :)

[@thisone1697]

👍

[@banellone]

Hi mr. Gone Wild :p, I repaired same tv set earlier and was looking for some kind of device to make so it turns this tv into low-end oscilloscope. I found points where I could feed composite video (I made actually AV input). This little device of yours is just what I was searching for. It would be great to make propper video on how to turn tv into low-end oscilloscope, not rubbish like playing with audio amplifier on deflection coils. If you could answer me at least is it possible to program atmega88 with arduino uno platform? Thanks. Have a nice day.

[@Mladjasmilic]

Please buy DVB-T2 receiver with modulator. New are about 30€ , in Serbia at least

[@celsoneves2368]

Good!.

[@edgeeffect]

It would be good to have a video about which capacitors to use and why? When a polypropylene is better than a polyester and why to use mica not ceramic..............

[@Torogol85]

Yeeeeessss, this is a great happy ending!

[@PP-xy9bg]

I remembar the TESLA company, that made chips and components. I think they had integrated power amp chips.

[@theschnilser7962]

Yes, apparently they did. I have one here, an MDA model of some sort, I don't remember the number.

[@LucasPereiradaSilva]

This is pure black magic.

[@Stoney3K]

Isn't the horizontal oscillator circuit not just a simple phase-locked loop?

[@that_duck_over_there]

8:36 unless it is a smart TV/games console/PC/etc.

[@The_Hanter]

Video o RF modulátorech by mě velice potěšilo 🙂

[@stalkerfromvoronezh4493]

Next episode - let's adjust picture.

[@dimitarnikolov3527]

Maybe you can restore an old game console or a VHS player and use it test CRTs

[@thisone1697]

I'm sure that piece of sh..t does not support PAL/SECAM/NTSC )))

[@theschnilser7962]

@@thisone1697 Some VHS players and old game consoles have an RF output.

[@jkobain]

So was this one originally designed to work from car batteries as well?

[@widyahong]

why with wet hand if you touch the screen after screen turn on and turn off its shock me very2 hard :( , with dry hand its like static discharge to my hand.

[@SeanBZA]

Skin resistance, with dry skin the charge built up on the glass slowly is discharged through your skin resistance, around 100k, with around 50pF charged to 10-25kV from the electron beam hitting the other side. Wet skin around 100R or less, so the same charge is now going to go through 1000 times faster, giving you a shock.

[@mjouwbuis]

Even replacing a silicon transistor with a random other silicon transistor in a horizontal output stage is often problematic. The transistors are quite specialised and often driven hard but not into saturation or are forced out of saturation by a negative pulse. Too little or too much drive results in high losses.

[@pheremen]

4:01 This seems to be made in East Germany.

[@ikehsamuelifeanyi4925]

Where can I download the circuit diagram you're using in English.

[@king_wing34]

7:52 oof, i would never touch anything in a high volatge tv when its on...

[@thisone1697]

Right decision! Stay alive - don't touch that! )))

[@ShaLun42]

This gave me some ElectroBOOM vibes

[@eDoc2020]

It's not a high voltage TV, it's only 12v. Everything will be safe to touch inside except for some of the deflection circuitry. That happens to be exactly what he is touching, but I figure he knows it is safe. On most modern TVs the flyback primary is on the transistor collector, which is often connected to the heatsink. So if you touch one of those you could get a shock. I've been working on an _old_ TV which runs on around 400v. I'm a bit more careful playing around in that than I would be in a 12v unit.

[@ShaLun42]

@@eDoc2020 But for CRT to operate properly, you need several kilovolts on anode. Up to 25 kV if I correctly remember. Also high voltage on the other outputs of flyback transformer.

[@eDoc2020]

@@ShaLun42 True, but the real high voltage output is well identified and well insulated. Obviously touching random things in an unknown set is a bad idea but our host seems well-versed in this one's operation. Heck, the antique TV I'm working on runs at ~400v total B+ and I still poke around a bit in it when powered.

[@douro20]

Did you study electronics when you were in Australia?

[@pchaayeshanaik1922]

i hacked a old BUSH B/W television to use composite signal just by seeing which ic is the signal ic then seeing its data sheet i soldered it in a horrible way of course ; > love from India

[@tiborbogi7457]

Is there anything that DGW don't know about electronics ??? ;-)

[@Conservator.]

21:54 By the tone of your voice I somehow suspect that you are talking out of experience. 😉

[@WagTsX]

I was always worried even about getting closer to powered-up CRTs exposed in an electronics repair shop I used to do some jobs at 15 years ago... I helped the older experienced guys into getting service manuals and stuff like that, but never ever touched those scary anode cables.

[@azariayehezkel9064]

can hook atari commodore pong game nes dendy all console with rf modulator

[@stevek1139]

Please make a teardown of a music center

[@willrobbinson1]

here in au only digital and is mostly crapp no longer watch free to air due to broadcast garbage

[@jkobain]

Wait, the speaker stopped using the word «subsctructing» and switched to using «subtracting» instead? Where is our old good DGW?!

[@jean-francoiscaron5706]

The capacitor icon on the Soviet capacitors look like cartoon mushroom clouds.

[@georgen.8027]

The pillow says "Happiness" in Chinese

[@iceberg789]

plwase make a crt service tutorial for us, diode sir.

[@zts9383]

Potenšiomítr.

[@pi6706]

They certainly managed to make the screens very flat on their CRTs for their time

[@tvishmaychoudhary69]

Early yay!

[@RobotN001]

0:25 but maximum voltage !?

[@vaclavtrpisovsky]

Yes, the max voltage falling is the main problem of capacitors that deteriorated this way. It is easier for them to arc over and become shorted.

[@lifeai1889]

3 different oscilloscope is involved in this video Ur cat think it's too complex

[@BobT36]

LOL those trays full of bits.

[@keithking1985]

GOD, DANYK, ALL THE OLD CAN TRANSISTORS YOU HAVE. I'D BET SOME OF YOUR PATRONS WOULD LOVE SOME OF THEM. IF EVER YOU NEED TO DE-CLUTTERING YOU SHOULD GIVE SOME OF THEM AWAY IN A COMPETITION, (OF COURSE YOU SHOULD JUST GIVE SOME TO YOUR PATRONS FOR FREE) BUT HAVE A COMPETITION WHERE WHO EVER COMES UP WITH THE BEST COMMENT OR JUST SOMETHING AS SIMPLE SAYING IN A COMMENT "GIVE ME A TRANSISTOR" TO ENTER. AND PICK OUT OF A HAT! ANNOUNCE THE WINNERS AND IF THEIR WILLING TO PAY THE SHIPPING FEE (WITCH YOU'D BE SURPRISED HOW MANY WOULD PAY) THE BINGO. OF COURSE I BET YOU HAVE SOME REALLY REAR ONE'S IN YOUR COLLECTION TOO. (HOPE YOU CONSIDER MY IDEA SOMETIME IN THE FUTURE) ITS A GOOD WAY TO DE-CLUTTER.😀