1998 Grundig CRT TV teardown (unedited)
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- čas přidán 11. 09. 2024
- Today, let's take a look inside an old CRT television from 1998 and salvage some useful components and copper wire from it before scrapping it.
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WARNING: Televisions contain dangerous mains voltage and a very high voltage for the CRT tube. Capacitors and the CRT tube can remain charged to a dangerous voltage even after the TV is disconnected from the mains. Risk of electric shock. Risk of fire. The CRT tube is under vacuum, risk of implosion and injury from flying glass fragments. Electrical appliances must be disposed properly. Do NOT open, repair, modify or build any appliances unless you are qualified for it. Do NOT attempt to do what you see in this video. This video is NOT an instruction. You do everything at your own risk and responsibility.
There were three glass plants in Germany that made CRTs. Panels (fronts) and funnels (rear parts) were produced seperately and later joined during manufacture at the actual CRT plant.
Samsung-Corning in Tschernitz, former Eastern Germany / GDR, then VEB Fernsehteilewerk Tschernitz. The glass plant still exists, now producing low-iron solar glass for photovoltaic, solar heating and greenhouses: Glasmanufaktur Brandenburg (GMB).
Schott in Mainz - Schott still makes all kinds of special glass, but no more CRTs. Still, theire not the company they used to be.
Philips in Aachen - the Philips plant makes car headlights and other stuff nowadays, but no more glass production at all.
There was also Valvo, owned by Philips, that made valves and CRTs, including the CRTs in Hameg oscilloscopes.
使用したテレビならブラウン管がいっぱいありました。言いたくありませんが、資源リサイクルされて致命的ですね！😢
As a kid I remember taking a broken tv apart and was amazed how many hundreds of components there were and how dusty it was! Great memories 👍😎
i m a 15 year old boy from Romania
I fixed a bunch of TVs like this
and this is the way i earn money for components
😃
Si de cand ai inceput sa repari tv-uri? :))
@@alinbostan4569 nu ma asteptat sa gasesc un roman pe aici :)
tv uri si alte electronice am inceput de pe la 13 pana atunci doar dezmembram tot ce gaseam pe langa tomberoane sau pe la bunici si nu prea aveam habar ce fac.
oricum acum am ajuns sa dau 400 de lei pe un multimetru si sa fac amplificatoare pe lampi , bobine tesla si multe altele si sa schimb prize si inrerupatoare fara sa opresc curentul de la tablou, ca un roman adevara :)
@@merces6295 usor, sa nu te prajesti umbland pe la prize. O singura FAZA gresita si nu o sa mai poti sa te lauzi. Invata sa lucrezi profesionist. Nu multimetrul te face electronist. Eu lucrez in proiectele de hobby cu multimetru de 50 lei, dar mai mult ma folosesc de osciloscop. Multimetrul nu iti ofera prea multe informatii. (Chiar: ai putea face singur propriul multimetru, chiar si mai bun decat ce ti-ai cumparat deja, iti garantez ;) ). Cauta sa iti cumperi unul. Sunt si pe comanda din China, sau de pe magazinele de electronice. Recent am cumparat cu osciloscop mixed signal si analizor logic cu interfata pentru calculator cu 170 lei. Nu e cel mai performant, dar cu sonde potrivite (sau chiar si fara) poti vedea un semnal. Se numeste Bitscope BS05
@@Danny4Driver am si eu un osciloscop E0108. e vechi si greu dar macar merge si iti faci treaba cu el. adica vezi destul de bine cum se incarca de exemplu gateul unui mosfet sau semnalul care iese dintrun cip. lam luat de la cineva din subsol. bietu osciloscop cred ca a stat 30 de ani acolo. oricum arata ca nou si nici crt ul nu e obosit dar a avut vreo 3 tranzistori arsi si a trebuit sai schimb toti condensatorii electrolitici
Crazy idea: Could a CRT TV with an air-leaking screen work in a vacuum chamber or outer space? What difficulties would emerge?
My father used to be a TV techician during 1985 onwards. I have seen so many TVs being repaired in my house, most of them had like multiple boards and much more dense.
The flyback transformer on it's own definitely deserves a (few) separate video. It is so complicated and interesting that it would be a shame not to do.
Zap
Nostalgic. I was repairing these from 1992 till 2010. Thank you for recalling.
I've got this one! :) God, I'm old :(
That t.v looks like it was one of the last products that the real grundig company made.
Some idiot bought there name and it was slapped on any old rubbish, what an insult to such a quality company.
i always connected the anode to the Dag band, 30kv up my arm, No thanks lol.
Oof how did the feel
There's a Samsung label on the CRT. Not sure if that means that Grundig supplied the CRTs from Samsung, or if it means that the entire box is a re-badged Samsung...
@@andreasu.3546 No, it's not a rebadged Samsung, it's Grundig made. I can tell from the layout, the green ribbon cables and the white flyback. Grundig never made CRTs, they used Valvo and Videocolor tubes in the '80s, Videocolor in the mid '90s, then Samsung in the late '90s-early '00s. Then in about 2004, only their name remained, because they've sold the company, and started using Turkish Vestel/Beko chassis in their TVs.
@@mrnmrn1 As a part of Philips since the 1980s, Grundig also used Philips CRTs in the 1990s up to their bankrupcy in 2003.
It was made in Austria in Grundigs factory in Vienna.
With digital technology you handle with man made borders, with analog technology you work with the borders the universe sets to you.
I seen one of those by the dumpster at my local rent one store. Sometimes I'll go disassemble one & scrap some good parts out of them.
They don't make those anymore!
CRT TV is like treasure box for electronics beginers. There a lot of components, that can be reused.
Sadly those CRT TV are becoming rare in dumpsters. Nowdays is more often to find broken LCD TVs and monitors, but the boards contain small amount of electronic components, the rest of them are SMD components, they are not useful for beginers.
I LOVE CRT TV! They were my main source of components back in the 1970s and 1980s
Yes, all nicely overheated and encrusted in baked on HV attracted dust..😸 - Most TVs had a hard life...On everyday for a decade.
Sob, makes me sad. I started off fixing tellys back in the 80's.
Poor innocent telly 💔😢😔
What about converting one of these TV's into an Oscilloscope?
a 100 watt massive osilliscope
There were a lot attempts to do so. But the deflection is too slow, and too distorted as well, so it would be a nice thing to view at, but not a good measurement. The declection is a magnetic one and so the maximum frequency for the vertical and horizontal deflection is limited by the coils and the inductance.
Those are just useless. A small CRT TV could be rebuilt to a curve tracer, but it would need a LOT of iterations
@@vampy625 Yeah. A giant three channel (R,G,B) lissajous figure generator for audio input signals. 😂
@@jimadams7765 lmao and the amplication of those signals
That’s probably a perfectly good telly for retro use though I can’t blame you
It wouldn't work for long, check that badly burnt board in PSU area at 13:13
I think he still may have older ones, according to his website
@@daniel5927218 that's normal
because there was a power resistor
When I was really young, 8 or 9 years old, I took off the case of a crt that we had for years and was about to throw out. I had it on with the case off. Only a few years later did I realize I could have been killed
I worked I these for 30 years and nobody was ever killed by an unplugged set.
@@publicmail2 yeah but I was young and stupid and I had the case off while it was turned on
D Rozzelle microwave ovens can kill whilst de energised although only given certain circumstances. They have claimed a few victims over the years. Never heard of a crt tv injuring anyone although suppose it may be possible.
On youtube any shock ends in a horrible death, I would have been killed many times already.
AD Electronic Teardowns only ever attended one. About 20 years ago i think when I worked for dronfield electrical the plumber was trying to identify a fault on an old s or y plan system whilst on his phone trying to do 2 things at once resulted in a fatal electric shock. That’s install though not appliance repairing.
CRTs have an indended way of pressurizing them when recyclying. There is an evacuation port under plastic part of electron gun. Breaking it with a pair of pliers is considered the safest ways of 'defusing' a CRT. Some people also hammer a nail or a screwdriver into anode connection point, but IMO, it is not as safe as breaking the evacuation nipple.
BTW. not all CRT TVs have to go to recycling yet. Retro computer/console enthusiasts still prefer them as displays over LCDs with over 9000 adapters and converters.
Always worth tearing these down. Many reusable through hole components.
You have the same second name of mine
Yours is bill kerr
And mine is Jon kerr
@@Purple431 Well congratulations, Jon. Our name has served me well. I wish you good fortune with it!
@@Miata822 🙂😊❤️
Kind of surprised they still used some carbon composite resistors in 1998. Every old 90s thing I've taken apart had all carbon film resistors.
I own a Hitachi 1984 color crt tv. it only had 1 failure of the audio ic. still works until now. just amazing!
We have 2 15+ years old crt tv and we still watch it!
There's no longer any analog broadcast in my country, but I keep a small CRT TV to be used with a set top box. But even the low quality digital broadcast that this set top box can receive will probably disappear.
@@DiodeGoneWild yeah, we use set top box. In fact, we have no flat screen TV! (Except for my pc)
@@DiodeGoneWild I still use analog TV with DVB-T2 decoder box, why it should disappear. The STB downscales HD programs to SD (PAL) quality.
@@DiodeGoneWild Set top boxes can sometimes do a PAL output on the SCART plug even from an HDTV source.
Try to find a TV nowadays that consumes less than 60 watts. Most consume well over 60 or 100 watts, although they are LED.
The cheapest ones without any smart stuff do, my 42" draws less than 30W, but I've had repair the backlight a couple of months after warranty ended and the frame/panel are so thin they start to bend once you remove the bezel.
And it has the branding of an once respectable manufacturer.
its crazy that the crt tv which works with thousand of volts, his nominal power is around 30-60 watts
i remember using that D-gauss Cable Coil for a Radio as a Antenna.
good idea, how was performance?
@@rahimkvayath I got all local stations like normal antenna
@@Zakhimself only local Stations? not DX?
@@rahimkvayath maybe too, i have not tested the DX, give it a try there is alot of crt,s everywhere still :D
@@Zakhimself ok, thank you
Some TVs had powersupply synchronised with horizontal deflection, it is used to remove visible interference on screen.
Even older TVs had powersupply working with same frequency as horizontal deflection circuit, the oscilator was tied for both.
19:39 I think that one of those 3-pin is a 7805 linear regulator and the other is a 7808 or a lm137, i opened up quite a lot of CRT Tv and usually in that position there are the linear regulator
I miss the good CRT TVs and monitors.
I have waited for this video👌
Hi! Can you make a teardown of an MPPT charge controller? I love the way you simplify things out! thanks
Think of all the energy & parts it took to make this compared to a modern tv
That's what makes the old electronics beautiful. People in 1990s appreciated their electronics more than the people today. Beautiful times
I'm sorry, but somebody has to mention it.
Us retro gamers still very much love, use, service and even repair CRT Displays. (Yep, I'm actually gonna say this)So please, don't just recycle and/or destroy your old CRT(s). Somebody could still give them a loving home.
Nice, can't believe there are still the odd CRT or two floating around! Trouble is, they are very big, bulky and heavy, so are of no use to most people especially with modern HD TVs nowadays.
The only thing these are useful for are for retro gaming - or for component salvage, such as the PCBs and the speakers/audio amplifiers :)
Hi Dan,
I thought I had posted here today but don't see the entry (re WYZE terminal). Did you put it on hold for some reason? Thanks.
Is the horizontal deflection coil driven in series or in parallel with the flyback? If the heater was disconnected would ringing damage the transformer or the driver transistor?
5:32
Those flat type mesh cables are very similar to what solder wick is made from. I've used them for that and other things with hit-and-miss results but usually work pretty well if you use with flux. Also since they're tinned copper usually... They're great for ground straps and things like that. Define mash can carry a lot do to skin effect if needed... But is also flexible enough that it can really help make ground connections and things in bed or difficult areas. Like between a chassis and a frame or something like that
Glad to have you back ;-)
Nicely done
You can safe that CRT by removing the black cap off pins and gently tap point to the release vacuum.
Super cool idea brother and great
Great teardown.
I used to make them safer by breaking the glass tip to let the air in before taking them to the skip.
♥ BU508
I also remember replacing this one in numerous TV's :). And also BU2508, BU2527 and BU2532 (if I remember rigth) in many monitors.
Why are CRTs obsolete?
I want to bring them back :(
Very educational video. Thank you)
@DiodeGoneWild -
Diodes in the Power supply made the board a bit crispy on some places (similar to cheap PC PSUs) but the TV lasted long
I think still too soon to think young people won't know about CRT TVs and their inner workings... but, idk, I'm from the 2001, so, I'm already officially old :'v xD
Are you gonna make series about VTTC?? Some smaller one, for example gu50??
I had disasembled a lot of CRT TVs in my life. Interestigly I had found on some Sony TVs that they had two identical High Voltage bipolar transistors, maybe it was to increase current capability or to drive deflection coil and flyback transformer seperately.
We in the U.S. are mostly not familiar with the S.C.A.R.T. connectors.
It was also called a 'euro connector''. It was useful to have RGB in and out Composite in and out and stereo audio in and out in one connection. Of course the US never used RGB as a standard and component was the choice there..Still no problem adapting SCARTs but it didn't happen. Not sure why it never took off in the US..Anyone?
I IDEA behind "our" SCART was loads better than "your" RCAs.... but in PRACTICE it's so much easier to use RCAs where you can just SEE the configuration..... SCART leads had all sorts of (hidden) internal configurations.... I used to patch all our multiple DVD and VHS stuff through a homemade SCART to RCA box.
top 3 most important components are the flyback, the audio amp chip and coils. Tv amplifiers are the real lifehack and im planning on reusing one to make a portable stereo
You know how good is this flyback transformer?
Maybe plasma ball experiment
Later sets often had aluminum demag coils , lots of parts on pcb's for other projects ect
I have few CRTs including sony trinitron that i use for retro gaming, no modern tv can compare to CRT if you want to play some old games on original consoles
Can you make a video about crt oscilloscope? I know you already make a video about it but you didn't show the blue witch you used in your video. I am really interested about crt or vacuum tubes. I wish someone still making crt tubes!
Conclusion: Not dodgy
16 year old viewer here, I still know what crt's are
ow yes if you was 14yo you will not know what was 16yo is the limit
Well if you didn't know what they were you surely do now
And it looks like our current record is 15 years old
i wish i had multiple crts lying around...
Save the horizontal output transistor. They fail quite often and are getting pretty rare.
Of course I keep it :). But I think they still sell them. Those tend to be BU508.
C'mon. I refuse to accept SCART as the 'old days'....
:D :D :D
hehe najlepšie pracovisko je na zemi :D
Can you please tell me the name and model of the microcontroller? I want to know just out of curiosity. By the way, have you heard of Arduino?
I have 20 flyback transformers in my garage.I hoard them like crazy.Now I just need to figure out how to make a driver for them.
Tv's from 80's are nicer inside 😀
May i have that speaker?
I have 15 years and i have simillar tv.
I always take all the components out of those crt tv's when I find some.
I could take the flyback transformer or a high voltage transformer for plasma ball or plasma ball light bulb experiments
@@Purple431 I always taking them cause I love to play with high voltage lol
A good CRT is worth saving. They have more value than you might think. Even a broken old CRT from a good brand is worth mending. A Sony Trinitron "gaming monitor" will go for a grand or more ( up to $5k)!
@@ccdimage wow 😮✌️😍
My parents recently switched from an old crt which is 15 years old to a led tv. They are the old fogeys and money savers
Same. And even our new TV is not smart.
@@ismailaydogdu4103 me too!! our one is also not a smart one🥺
Cool. Made in my country
crts are gaining value tho
Will led modetn TVs becomes obsolete in the future? and people will call them vintage?
Those CRT TV's were also once modern compared to the vacuum tube wooden TV's. And LCD's will once look obsolete compared to some tiny boxes projecting a big picture on a wall, or flexible TV's you can turn into a roll, or something projecting a 3D image mid air, or even projecting image directly into your brain :).
Still using a crt tv, we still got here an analog TV transmission.
We have no analog since 2011.
@@DiodeGoneWild we do have digital but not much.
Ist it possible to remove the Electron gun without destroing it?
It's quite possible in movies :). Otherwise, it only works under a vacuum.
you'll end up needing a scope to repair a "tv scope " though
A lot of guass wires are made of aluminum wire.
If they are that dangerous, why aren't there weapons based on electron guns?
If we lived in vacuum, we would shoot electrons at each other instead of bullets :).
Grundig is good brand, but speaker is weak, maybe software give too much energy? (My old Grundig blow up speaker on high level volume)
This looks like a very cheap model.
Be careful: Grundig went bancrupt in 2003 - the stuff you can get today comes from a Turkish company that bought the brand rights, but the quality is quite low - just cheap stuff that cannot be compared to 1980s Grundig or so.
This happens to so many renowned brands with lots of tradition unfortunately: AEG, Blaupunkt, Braun, Telefunken, Dual, ...
@@meosalami5180 Also Lenco... and actually some new brands license their name for any **** stuff (I found a Hyundai garden hose connector, imported by some China import trading agency. Just the name licensed...)
hi sir how are you? i love all your videos very interesting 😉
do you make film with tesla coil? if yes, when?
@@__MINT_ last film he made about 1 month ago
Make transformer from yoke coil.....,👍
😳😳😳
Can someone please explain to me how people used to hang that box on the walls???
🙄🙄🙄
They used to put them on a table. They still mostly do it with LCD's now. And some older people still put a table-cloth over the TV when it's not running :).
9:41 Samsung
i'm kinda proud to see that my favorite company was already pretty important back then as a manufacturer and tech supplier.
They bought an old DDR TV factory.
I still Use a CRT TV
i would of thought he would of popped the glass with a hammer at the end . ( wheres me ammer )
Jelikož jsem fanoušek CRT televizorů a monitorů, tak mě tohle video trochu bolelo u srdce, kdybych jen mohl a nebyls tak daleko, tak bych si ty zbylé televizory od tebe sebral. Každopádně mám teď asi 12 kusů, z toho 8 televizorů a 4 monitory, většinu jsem sehnal nefunkční a jsem si je opravil, většinou stačí vyměnit elektrolyty ve zdrojové části a jede dál 🙂 Ale taky už to nemám kam dávat, největší kus, co mám je 30" Sony Trinitron, měl jsem šanci mít i 40", ale to už by bylo moc, ten kousek vážil asi 130kg. Na tvém místě bych ty samotné obrazovky zkusil prodat, protože to může pomoct někomu, kdo se taky zaobírá CRT a má nějaký kus se slabou obrazovkou. Každopádně když to budeš vyhazovat, tak bys měl předtím obrazovku kvůli bezpečnosti napustit vzduchem tím, že přeštípneš štípačkami zatavenou odsávací trubičku na konci patice obrazovky.
Ještě nějaký mám na Mělníku a v Žatci. Na tom Mělníku mám i několik monitorů. A další kusy co mi lidi nabízej, ale nemám to kam dávat. Taky bych tomu rád našel nějaký využití, ale ono je to fakt asi k ničemu. Jsou toho plný internetový bazary, častokrát i za odvoz, a stejně to nikdo většinou nebere. Na aukru to taky končí bez příhozů. On to fakt málokdo už ocení. Taky sem to chtěl sbírat, ale je to trochu prostorově náročnej koníček :D. A radši sbírám třeba hodiny, ty aspoň něco dělaj. Tyhle televize už nic nechytnou. Jestli je ale sháníš, tak nabídka je určitě větší než poptávka.
10:25 Wer ist hier alles aus Deutschland?
Moin
*make an oscilloscope using this*
im 17 years old and i know that fat things lol
Well I'm 13 yrs old and I know what a crt television and what a rotary phone is 📺 very old fashioned
lol
@@Purple431 old but nice has a lot of components to re use again.
@@zoka3121 yes your right mate
Very reusable 👍😊🐍
I m 13 years old and also know what a crt Television is because i still use a crt Television
Szkoła rze nie masz tumacza po polsku
Das ist alt
Noooo.
Its r g b video good for arcade monitor
:-(
Im not sure if this set has rgb scart or not, but a lot of cheaper tvs had non rgb, composite only scart inputs. Scart doesnt necessarily mean rgb.
@@azariayehezkel9064 nope, i had 4 tvs in the past with scart ports that can only do composite and svideo. (All were cheap brands and low end models), My sony and thomson tvs however had rgb scart
@@denizkilic6022
sorry . you right non all the scart is r g b maybe composite or s-video
I have the same for parts lucky me
Here is a trick for those want to change from their old crts to new ones but are stuck with em because of their parents:
*Connect a high voltage to the power supply pins of the main microcontroller, video amp ic and rest of the chips which you cannot reuse. They will blow up and your tv will not work anymore.
I did this when my parents were out and fortunately they bought me a new one even it was an old 2nd hand LED
Or convice them with electric bill
That's how i kept 20yo samsung CRT
@@bitelaserkhalif they will not get convinced😂
Haha 911 like👮🏻♂️