1979 Sony Trinitron KV2142 No High Voltage Dead TV Repair

In this video I learn the importance of the flyback u bolt and conclude this is a common failure on Vintage Trinitron sets that appears to wreak havoc on the high voltage. solid state color television diagnosis and repair
/ shango066

[@shango066]

I've discovered the broken bolts appear to be a pattern problem in this era Sony sets that throws the flyback tuning off killing the driving components. This video is several months old but no less relevant or educational or entertainment for those who need their Saturday morning he's forever playing near blenders usually Oroville flourish lamp

[@repairitdontreplaceit]

i think they break at the weekest point(where the thread ends) and possibly its down to thermal expantion and contraction over 30 odd years

[@d.c.hammond130]

HIGHLY educational. Advanced training.

[@bigalsmallengines]

Working on these sets can be like stepping in the ring with Andre The Giant. Cheers to you buddy! 🍻 -Al

[@northhankspin]

👍

[@shawnstthomas4811]

If you get up on Facebook vintage tv forum, I've got a couple Trinnys that show delamination and and PVA rot like mold. I know you picked up a couple of those KV 1722 S. I've got 2 of the same that both have PVA rot starting I've got a 15" that's really bad really bad.. Interesting that PVA rot and delamination are hitting these as well.. Also what seems to be breaking the U bolts I believe are heat cycles (I believe) anyway. Weakest part is the bend. Wrong temper on material. Etc..

[@linuspoindexter106]

Shango-isms: 2:00 Speechless; 8:30 Manhood; 10:15 Airplane; 14:25 9 Rings; 20:10 Fireworks; 20:25 No satisfaction; 20:50 Attack of the Flies; 32:43 Stray cat news break; 37:35 Good advice; 50:00 EOL?; 52:10 Dual Trinitrons; 59:50 More Kitty news; 1:02:20 Pucker factor; 1:05:15 ???; 1:07:04 Oops!; 1:13:40 TeeVee!: 1:14:10 Watching TeeVee!

[@ivok9846]

20:13 [gunshot] that was nice [proceeds like nothing happened] lol 36:10 no need to call suicide hotline...

[@nisserot]

19:14: Okay, NTE315. It's a 3 ohm resistor. Cremated.

[@ionsimion8792]

Let's not forget about the most important part wich is the mighty DOOOH at 1:13:05 !

[@ivok9846]

@@ionsimion8792 he beats (most of) stand-up comedy with so few words...

[@jwhite1016aol]

10:40 FIRE!!!

[@grlg2]

Hi Shango, what a sweet kitty. Thanks for having a kind heart and feeding her.

[@Acein3055]

You are good person taking care of stray handicapped cats. You are also a good troubleshooter coming from a retired electrical engineer and a former 70's and 80's TV bench tech.

[@gabotron94]

Rescuing old, handicapped electronics and giving them proper love isn't much different

[@wrnchhead76]

I'm sorry to hear about your gray kitty. He was a good cat. I lost a 2 month old kitten last year and I'm a grizzled old mechanic, but it was a hard time.

[@genethemachine7169]

Oh boy! Finally a set from my childhood! My great-grandad had one of these in the front sunroom.

[@charlesstauffer9831]

Sorry for the loss of your cat. It's always hard to loose a pet. Another interesting and informative video.

[@ChrisR]

I know it's slightly off-topic but thanks for feeding the stray cats. As the old biblical saying goes "Whatever you do unto the least of these....."

[@Seiskid]

Obviously a while back now, but sorry to hear about the other cat. He was a survivor. Really enjoyed this one. The interconnected complexity of these sets is something else. Really impressed you were able to fix this one. Those easily blown up HOTs would have defeated me. Using two zenors in parallel has its own issues. There's always slight variably and one will often end up doing more work than the other. Not that it matters, because later in the video we learnt in normal use they don't actually conduct anyway. And you didn't end up using this board.

[@drjmansplace5174]

Sorry to hear about the loss of your other cat. Far as the bad set goes, who knows what happened to it. Sounds good. Good picture.

[@SoddingaboutSi]

Taka a real man to show his mistakes and explain what he has done wrong.

[@filthylucreonyoutube]

From an engieering perspective, your careful analysis and reporting of routine component failure is fascinating. Whether it's tin whiskers on combo pots, failure rate of capacitors of different composition, red composite panels becoming conductive or random bolt breakage, it's just amazing to get a half-century degradation report on mass produced electronics!

[@geoffjohnson7383]

Just another Saturday morning drinking my coffee and watching Shango! its nice to get away from all the everyday chaos and watch something entertaining. I work on and repair Industrial electronic equipment everyday and even watching you, I find some of the simple things I forgot about when it comes to diagnosing equipment. Of course old age wouldnt have anything to do with it......Thanks

[@geoffjohnson7383]

@@JESUSCHRYSLER5512 That does happen on occasion LOL

[@Rev22-21]

Just after Shango Raw Hide comes on MeTV. Excellent Segway.

[@sabbath7081]

Too bad about the gray and white cat, I guess he finally carbon tracked too far. Videos are fantastic and addictive they've taught me a lot in the past few months got my old television running better than it ever has and I've owned it for about 27 years 72 space command 100 19 in color. Changed all the tubes most of them were bad or almost bad, checked cathode current and high voltage both are acceptable it should work for me until it starts blowing capacitors and resistors, hopefully by then I'll be educated enough by your videos to even attempt anything like that.

[@acefeeley9007]

Sorry to hear about your kitty. I enjoyed his appearances in your videos, especially when he leaves an ant riddled bird carcass for you to enjoy. He loved you.

[@bird271828]

This TV was a state-of-the-art back in its time. I wish I could go back to 1979.

[@joe6096]

High gas prices, out of control inflation, trouble with Russia, incompetent democrat in the White House....... hey it IS 1979!

[@angrydove4067]

Oh don't I wish that I could too.

[@acatisfinetoo3018]

Yes simplier times in s lot of ways...a lot less technology, but what they had back then was built to last and be repairable. Hence way there are still crts around from 50+ years ago...

[@martinda7446]

Awww the cat is so sweet. Very sorry to hear about the little grey fellah. Hope he comes back as a TV repair man.

[@agostinodibella9939]

Great video for watching on a snowy day! I really enjoy seeing you troubleshoot these vintage TV’s with all their faults. Your sometimes comical style keeps you interested in the journey!

[@iasciateognisperanza3267]

My father bought this very model package that came together with a separate Betamax unit. They used to sell both at a discounted price. That was in 1979. We’d never seen those colors before. They were perfect! My father (RIP) always said that LCDs were no match to the beauty of analog Trinitrons, especially this model. He didnt like the sound of CDs either. Now I’m understanding why. I used to record:”Midnight Special” and “Dallas” using our Betamax. My older brother , though, was caught with an XXX rated tape. Oh Boy , my Mom wanted to get rid of that “useless” box right away. Wonderful memories….

[@queuerious]

A great demonstration of perseverance and troubleshooting. Thanks Shango for the video!

[@martinda7446]

At 52 mins, this has been the best Shano066 so far ever. Brilliant fun.

[@ultraproject2619]

The tape between the transformer core halfs isnt isolation, its to introduce an air gap, said gap decreases the inductance of the windings and increases the magnetic flux density that the core can handle. In other words they can use less core material and less copper wire. If the drive current is too low that could be the gap is too little causing too high inductance.

[@Robbyinsaintpete]

I love your videos, and watch them all! I hope you make more really long ones like this, it helped me get to sleep the other night. I only mean that in the very nicest way! I went back the next day and watched the parts I missed.

[@tsevetgestoorde]

Your videos are really great, but the tv videos are so satisfying to watch. Thanks again. Those Sony's are something special.

[@djsherz]

I learn a lot from this channel. Today I learned not to attempt to mess with old Trinitrons! Hats off to you for getting it going though, I'd have lost my temper and binned it once the replacement board smoked..

[@teacfan1080]

This video was highly exfoliating, to say the least! Those Trinitrons are a trip to work on but in the end you get rewarded. I used to have a 27" Sony and it had a great picture. You gotta love modern day tee vee where you can learn how spraying chemicals on your face can bring out your inner vibrancy.

[@connormason7907]

Wait until you get a face full of contact cleaner. Vibrant as ever

[@TheSafthecktor]

Youre about more than electronic repairs. You see everything as it is. And live life with curiosity. You live life the best way ever! Ty shango and pls excuse my bad english

[@nigelsears7191]

we always stared them on a variac , 9 times out ten a big bucket of caps and a bucket of sand to put the flames out they were great sets , we had about 4 of the early kv1810ub ins took as a loan set for customers just big enough to please them and not quite to heavy to lug around , over the years as the lamps went south on them we started replacing replacing the sets with the later version the kv1820 , they were even more sensitive to blowing up the scr and at the time the copy ones were absolute junk so it was always best to use genuine sony ones

[@melockavich9596]

I love it when you work on sonys thay drove me nuts in the 80s its nice to find out how they work.

[@mullahviking]

Cute cats, expert television repair, political commentary and dermatological fever fantasies. Masterfully put together. Thanks Shango

[@Nick2011881]

RIP Shango's cat, we will miss you! (name: unknown, born: unknown, death: 2022)

[@frankreiserm.s.8039]

You were very thorough at explaining the schematic and you spent a lot of time on it. The HOT is always bad in CRT TV's. Thanks. Frank

[@stevencarlson5422]

No wonder the country is gone to shit, love your comments keep up the fun content thanks shango066

[@Nodrog269]

Hi bro just learning about electrical circuits, even though I don't have a clue what your going on about, I love the way you talk circuits, explaining what you're doing and why. It just makes sense I feel safe about electrical circuits the way you work,the knowledge and confidence you have shines through, THANK_YOU so much for that please please continue doing what you do... old school is true school. Andy uk

[@kkteutsch6416]

Some 45 years I had a Sharp C2006 here in brazil and the ressemblence with another brands tv sets and this Sony front panel are really impressive...

[@matthiase.1747]

RIP grey-white cat

[@channelsixtysix066]

You don't normally equate a television and a shattered M6 bolt. A television innards is not the sort of environment you would expect to see that.

[@Pwaak]

Incredible educational journey! Thank You!

[@lmull3]

Watching you exfoliate a TV is a great way to start the weekend

[@ricardosalesdemello4130]

yeah! shango knows old friend of WAR! I love your videos, you are a great TV & other sound technician

[@gammaleader96]

Thanks for this exfoliating video. I like the ones that turn out to have a cascading failure, they make for very interesting videos.

[@jeffscomp]

Nice job on that and sad for the other kitty. Lol @ a force to be reckoned with 😄

[@JasonTHutchinson]

Sony Trinitron TVs had the best picture on the market. We had a couple different ones growing up. We had one just like this, and a newer one. The second one was from the mid 80s, and was very expensive at the time. I believe we paid around $600 for it. It must have been a rare model because I have never found another one just like it.

[@eDoc2020]

My family had a KV-1918 which also must be pretty rare. I could only find one or two pictures of one online.

[@aldeirmota1302]

Cara eu nao falo inglês más, apenas observando eu achei maior barato esse aprendizado com voce amigo valew.💪👊 Um salve aqui de Brasil Manaus Amazonas🔰🇧🇷

[@0tt0z]

Great video! Working on tv's is better than anything on tv.

[@emmarandom9609]

Aw man, sorry to hear about your grey & white boy. The black n white looks a lot like a stray who used to come here for a feed (albeit a boy). I remember one video, you were explaining something and all of a sudden just lost your tongue mid-flow & it turned out you'd just noticed a gift one of the cats had bestowed upon you. Cats soothe the soul & their offering of gifts is a good measure of a person's goodness for want of a better word.

[@emmarandom9609]

I don't like my skin full of dehydration.

[@emmarandom9609]

Could not agree more with your closing statement.

[@ujassadh7640]

पुराने जमाने के बॉक्स टीवी देख कर पुराने दिनों की याद आ जाती है,

[@vintageradios7790]

Another great informational educational informative video as usual. Keep up the good work I really enjoy it

[@AaaAaa-ly3on]

This little beauty produced the best picture of all TV-sets on this channel! IMHO

[@electricboyo]

Shango: “I wonder if the picture bulb is good?” 😎

[@andershammer9307]

Its amazing how finely tuned the flybacks are in these sets but its annoying how it blows out the SCR when no longer tuned. I have a bunch of 70's and 80's Sony TVs and right now they all work. I did have to repair some of them. I remember years ago when I was repairing these a lot of them had dead CRTs. Its true that you must never rejuvenate Sony CRTs but you can do a remove shorts which may bring them back.

[@lucasrem1870]

He is only crying about the ads on TV? He is not able to make a movie here, how you repair it.... MAD!

[@arienhaddock8392]

I successfully rejuvenated the modern trinitron crt's, the video is usually blanked when the crt goes weak because the jungle circuit cant bias the CRT. The era im talking about is sony late 1990s-2006. Also on projection tubes from this time they liked to have intermittent shorts, tap the neck and watch the color flash and the neck light up inside. Generally for shorted tubes I do the isolated filament trick, wrap a few turns of wire around the flyback and disconnect the filament circuit from the fly. Now the old tubes from this time I don't think its a good idea, strange gun, i tried it years ago on a known weak tube it finshed it off. When sony went to the 3 gun inline gun like everyone else had for years I havent had any issues zapping them, they usually lasted 6 months to a year.....depending on how much they used it.

[@TheGuitologist]

Thanks for this video. It reminded me I need to exfoliate.

[@scotttait2197]

Sorry to hear about the gray & white cat ... my two are 22 this year

[@carmeloterrana3385]

Lei è un bravissimo tecnico.

[@kareno8634]

What would we do without those "Graveyard" Friends? Thanks to you both. Sorry about your Cat. He was happy, we did hear him Purr.

[@tectalabyss]

Hi Shango0. Always a good Saturday when you post. Went from tee shirt weather to Snow and high winds,here in the upper east. All my best.

[@Rev22-21]

We went from 70-80's then to upper 20s with a windchill in the teens. Next week we return to early spring. Texas

[@chachavessel]

Condolences for your loss, the kitty will live in reruns.

[@frankowalker4662]

Sorry to hear about the cat passing.

[@kano8474]

Hey SHANGO!! thanks for the video. Good break from watching the world fall apart.

[@ionsimion8792]

1:13:05 DOOOOH! Nice video,as always.

[@knifeswitch5973]

“Deep into the night” with Shango

[@richardguzman1491]

Got it brand new in 79 it lasted for decades, never a problem

[@d.c.hammond130]

"Someone has been in here." How to know what they broke, replaced, or removed? The SHANGO HOUR suspense thickens! 😁

[@Rev22-21]

Indeed. Indeed.

[@johnchildress6717]

Shango I was thinking that this set was not going to work.I should have known better.Good job.I made a comment to a Predicta like that Philco used the cheapest components they could get and was told they were fine.His remark.I believe what you said about them.

[@MattExzy]

r.i.p gray cat. Gray cat went EOL.

[@lauram5905]

Sorry to hear about old Grey going EOL, the female cat may have worms, but also strays and stressed un-fixed females tend to eat an unexpected amount. If someone got her fixed she’d be three times the size and eating the same

[@d.c.hammond130]

Stray cats almost always suffer intestinal parasites. Not just mainstream worms. Also toxins exposure. Outdoors is considerably more stress, but they can get by decently if fed.

[@dontknowbrian]

That was another great video you made! I watched it as my main Saturday night flick. You are one stubborn guy regarding repairing the trinitron or as I thought “ turdatron but you proved me wrong! Great viewing!

[@billsheppard9368]

I have a 2000 Trinitron with a jillion hours on it. The jug had gone completely flat about 3 years ago. The CRT heaters run off a flyback winding with a series resistor of about 2.7 ohms. It's on the CRT socket board. Jumpered the resistor so the heaters run hotter. Emission came back to like new, perfect grey scale and beautiful pic to this day. That series resistor seems to be common practice across many brands with flyback-derived heater supply.

[@TrevorsBench]

Yup, this is my experience with Sony TVs. Fix one thing only to find out it grenaded 3 more things somewhere else. Fix those then something else blows. I hated working on Sony TVs

[@andygozzo72]

'chain reaction' failure, similar can happen in zx spectrum computers, with lower ram chips, dc-dc converter coil, and its driver transistor ... one bad one can take out the others, replace one of them if bad and if other two bad can kill the new part!

[@d.c.hammond130]

Rolling Failures

[@MrPlytiger]

Love these videos

[@robertdams4078]

I love the electronic humor when you roach somthing! I laughed more than once! Interesting video, however, and appreciate the effort to repair this set!!

[@volvo09]

Great video, great repair. Thanks for messing with the old flyback too, I was curious if it was JUST the bolt, and what difference that made.

[@thebiggerbyte5991]

Cats and TVs, Perfect for me.

[@JerryEricsson]

My daughter is a cat person. After my good wife passed away a couple of years ago, my daughter moved in to take care of the crippled up man who is her father. With her came a couple of cats! Now about a week after my good wife died another cat person, who rehomes strays brought her a little white kitten with a black spot on his head. One ear was damaged by a cruel dog who picked him up by the ear and nearly tore it off. Now that little guy decided I was his person and has cared for me at all hours, day and night since. The little guy who would fit in the palm of my hand when he came is now over 18 pounds and has all the markings and attitude of the Turkish Van cat. Can't prove he is, and when we questioned some in the van cat talk group they exclaim that NOBODY could come bay a pure breed Van cat as a Stray, they are to valuable for anyone to allow them to hit the streets, even in a large city in the Oil Patch of North Dakota. So what ever he is, he cares for me, keeps me warm, day and night, he is just becoming a pest like those damn black flies that hang around you and you just can't get rid of them. (I think I must be becoming a cat person?)

[@Radiowild]

Nice revival of a quality set. Sorry to hear about the gray kitty.

[@acoustic61]

I gotta say, you're great at reviving old TV's and junk! I wouldn't have the patience to do it. I didn't even have the patience to watch the entire video and skipped to the good parts.

[@johnfranklin5277]

Sorry, I got 2 sentences into your reply, but didn't have the PAATIENCE to finish it.

[@JerryEricsson]

Back in 74 I went into a store (GLOBE Shopping City) in El Paso Texas and purchased a model TV A bit smaller then that but had the same touch tuning. I was Stationed out at Fort Bliss. We used the TV from then on (it was our first COLOR and our first NEW TV) through my tour with the 3rd Cav then stationed at Bliss, through my tour with The Old Guard in Fort Myer (I lived off base in Arlington Va.) (Mayflower moved it from TX to VA) then in 1977 I was transferred to Minnesota as a recruiter, the TV was moved by Allied Van Lines to Cottonwood MN. and it served us Till I separated from the US Army in December 1977, it was moved by Allied to my home in Lemmon SD. When I settled in with my job as a police officer, we saved up a bit and purchased a bigger set in 1979 and I gave the set to my sister who used it until the flat screens came down to an affordable price in 2012. The set was never serviced, and suffered those moves without breaking. I would say I got my money out of it! They were great sets and the color was unsurpassable even today with the flat screen sets, and mine is fairly expensive JVC set.

[@norcal715]

As soon as I saw the thumbnail I thought, that's a SG613 set. I hope it's not bad. Changed many of them in the early and mid 80s. Those sets had an awesome picture for the time.

[@nicksower6064]

Exfoliating. Eye serum is not just for breakfast any more. Good video - - - Loved it . . . loved the cat, too. Peace out.

[@ModelMotorworks]

This Trinitron was a force to be reckoned with

[@erikdenhouter]

And in the end together we all watch TV... Respect.

[@f.k.b.16]

My grandma and grandpa had this TV on their farm when I was about 5 or so! I know it sounds funny but I want to just push the channel buttons. I swear I can remember how those buttons feel in my head. When you opened the door on the front in this video, I remembered what that looked like too! My dad used to work on tvs... Well, he built a Heathkit tv and tried to fix them for people he knew or when ours died. I want to say I even remember the inside of the tv because I remember it losing vertical hold when I was like 10 or so and he took it apart.

[@Thomas62611]

Hi love your videos

[@marka1986]

I had a TV shop when these were not retro. When the SCR and regululator were shorted, knew I was in for a ride. Fixed a few but eventually the price was too high. Later on didn't even continue if the Scr was shorted. I'm in a metro area and would refer customers to the local Sony service center.

[@tedrobinson372]

It is amazing how the game of Whackamole parallels fixing this set.

[@jayster.k.wiseguy]

Man, that was harsh, would have given up, many times~ wowee, sir~quite impressive~

[@rickjohnson1632]

I’ve been watching Shango66 for 4 or 5 years anyhow. I actually found him watching his old mine exploring vids. I smoked weed, burned alot of brain acreage tripping on lsd , alcohol , rock&roll and all kinds of other shit kids my age did back in the late 60s. Watching Shango do tv repair I just “ zone out” and maybe have a few lsd flashbacks thinking “ this guy is deep”. I sit and wonder who the fu_k designed this sh__ . Ya, 5 years + of watching Shango do this stuff still not understanding what he’s saying and still thinking ‘ this guy is deep’ ✌️😎

[@vojtechtravnicek669]

Měl jsem ho -super !

[@vincenzostagliano5011]

I had that tv growing up thats a awesome save it was my dads baby

[@waytostoned]

You sound and talk like Frank from Pat the NES guy's Flea Market Madness! Nothing bad, just gives me vibes! Great video btw. :)

[@rdg2124]

If the u-bolt is a plated part, I wonder if there's a corrosion issue with the plating versus the thermal cycle and/or magnetic fields? Almost like an electrolysis issue, perhaps? As always, a very educational adventure with a real-world teacher.

[@bobbyk6585]

Very nice. Makes me wonder why you held onto the video for months before posting it.

[@SmoothEmJay]

+100 for looking after the stray kitties :)

[@MrPhantomFury]

R.I.P grey & white cat 😿😿

[@nonegiven9727]

Good repair diagnosis. Gray scale looks a little green in flesh tones

[@rolfsinkgraven]

Guess those bolts were a bit too thin, great video again.

[@joeycronan2652]

O oh oh.... What is that? It's sizzling and popping.... Shango I laughed till I cried. It went crematorium.... Your awesome man keep up your amazing work. Your knowledge is a gift!

[@melockavich9596]

That set was ahead of it time.

[@jedblow]

I've repaired them before I can't compare how difficult they were to repair with other model sets but I will say I blew several scr's through my own carelessness more than one time on the same set.

[@craignehring]

Great video, long live the Sony

[@TechneMoira]

I had forgotten how brittle Thyristors are. I thought Thyristors are quite good at handling momentary current surges, but after seeing Shango's misadventures I guess I'll have to reconsider using thyristors in the future. Very interesting and entertaining video although it makes you wonder if the channel's motto "we love smoking appliances" might be a bit over the top :) But then again, maybe I'm just the cautious type