Quite similar to the work I had been doing when it came to solid state amplifier repair except the STKs were available (1972 to around 2000). I got so experienced with transistor amps that I even made some from scratch in the late 1970s early 1980s. They still work now, trouble free.
¡Genial! me dio esperanzas, tengo el mismo ampli, pero nadie en Argentina tiene los repuestos de esos integrados, no me resignaba a deshacerme de el, y ahora menos que menos! gracias por este tutorial
hola joaquin soy de rafaela provincia de santa fe...argentina tengo el mismo amplificador y el canal b me quema los parlantes... me di cuanta que es por los integrados... pudiste arreglar el tuyo con esta solucion ? saludos
This may be possible....BUT, STK's were designed with overload protection, thermal shutdown and bootstrap features. Akai designed circuits around available semiconductor devices at the time. This is a dire straits situation if no STK's are available then yes. Sound characteristics may differ since transistor hfe are not exactly the same. Unless STK specify equivalent transistor circuits.
Hello my friend, you are brilliant at this work. Thank you for this information. It was very useful to him Item 0040 It has been unemployed for a long time, and my question is, when the transistor is replaced with 2, it still has the same power. Should I leave the middle connections permanently? Thank you very much, Your Honor.
Cómo estas amigo me gustaria conocerte tengo varios de esos equipos hace mucho esperaba algo asi no hagas caso a los que te critican, quienes lo hacen no aceptan qué tienes ingenio!!
GRACIAS por publicar el circuito completo del STK 0050. tendras el circuito completo del STK 0029, tengo un technics SA-202 con un canal quemado. muchas gracias por tu generosidad.
не так давно ремонтировал усилитель TRIO-7500. там тоже была сгоревшаю микросхема(микросборка) TA-100 (типа STK). Цена на нее очень высокая, порядка 200$ Пришлось проектировать и травить плату взамен этой микросборки.
Dear Sir, may i have a question regarding amplifier technics power IC STK 2068 II , The problem we dont have available parts especially this Power IC, pls if possible try to help me how to convert to ordinary power transistor or else if you have an IC pls i will buy it...thank you very much and more power god bless you...
STK0039 es cuasicomplementario, lleva 2 transistores NPN, y el STK0040 es complementario, lleva un NPN y un PNP, además esos son darlington, el A1943 y el C5200 no lo son, necesita transistores drivers, falta el ajuste de bias también.
It would have been nice if you could have focused on the npn that's would be able to tell which one you were using but obviously you were going too fast and if you really didn't consider that other people might want to know
Saludos y excelente su vídeo tengo un amplificador Sanyo y tiene un stk 4182 || y quisiera adaptarlo a Transistor pero no el equivalente a ese espero de usted esa ayuda gracias
Hi there. Got JVC ja s 22 and is dead. No sound at all through speakers or phones input. It turns on, lights are present, can hear transformer but no sound. What to buy best? Original sanyo stk0040 or replacement. Any difference in sound? Thanks
It is not possible to get some of the STK***** modules as they have been discontinued so if you can replicate the chip from the circuit diagram using descretes then that is the way to go.
Hello, I have 5.1 surround sound system(home theatre) here is the problem Couple of months ago it stopped working, as in it doesn't amplify the input sound to the speakers. But just yesterday, accidentally I plugged it to 110v source(normal 220v) and it worked, of course there is a buzz sound coming out it(I guess that's because of low power), on 220v it's still not working. What could possibly have gone wrong?
Why dont you speak? WHY DO SO MANY "HOW TO" VIDEOS ON RUclips LACK A VOICE OVER? WHY? Videos like this would be so much easier to follow if we didn't have to stop and read all the time. We are not in the age of silent movies anymore, there was something invented way back called the Talkie, look in to it.
Because this person does not know what the hell they are doing. it seems to me like this is the type of person that claims to be an engineer, by reading the the first chapter of an electrical engineering textbook. Or as if taking only the first year of schooling to become an engineer and nothing more. It seems they have a very basic knowledge of the engineering of electronics but nothing more. because there is several simple and some quite drastic mistakes that this person makes in several videos if not all of them. if you wonder why they don't talk this is why because they don't have any knowledge in the subject but just a very rudimentary introduction to this field of engineering. save yourself some time and effort and heartbreak and don't attempt to rebuild the this channels work I have yet to see one that is correctly done from A to z
Tout à fait exact. J'ai déjà remplacé des transistors de puissance par des diodes musclées. Parfait. puisque ces transistors ont pour schéma équivalent des diodes non.
Hello friends Greetings from Venezuela I need your help I have a technics brand amplifier model SA-EX140, the integrated IC class H model RSN 3305 OF 26 PINS burned. INTEGRATED ARE DISCONTINUED BECAUSE THEY ARE VERY OLD AND THEY DID NOT MANUFACTURE I THANK YOU VERY MUCH YOUR GRAM HELP PLEASE FRIEND
puedes reemplazar el integrado con dos irs 2092 que venden en ebay cuesta 15 $ americanos www.ebay.com/itm/IRS2092S-500W-Mono-Channel-Digital-Amplifier-Class-D-HIFI-Power-Amp-Board-FAN-/184033435092 siempre y cuando sepas donde esta la entrada de audio y salida del integrado puede ser reemplazado con otro modulo ya que no los fabrican o los fabrican falsos
electronicshelpcare.com/
Wish you well in your education, thanks for updates
I like the work
Quite similar to the work I had been doing when it came to solid state amplifier repair except the STKs were available (1972 to around 2000). I got so experienced with transistor amps that I even made some from scratch in the late 1970s early 1980s. They still work now, trouble free.
If you made a STK 0039 from discrete components , I would be interested in that....
Buen día saludos para stk 040 que transitor se puede usar
¡Genial! me dio esperanzas, tengo el mismo ampli, pero nadie en Argentina tiene los repuestos de esos integrados, no me resignaba a deshacerme de el, y ahora menos que menos! gracias por este tutorial
hola joaquin soy de rafaela provincia de santa fe...argentina tengo el mismo amplificador y el canal b me quema los parlantes... me di cuanta que es por los integrados... pudiste arreglar el tuyo con esta solucion ? saludos
This may be possible....BUT, STK's were designed with overload protection, thermal shutdown and bootstrap features. Akai designed circuits around available semiconductor devices at the time. This is a dire straits situation if no STK's are available then yes. Sound characteristics may differ since transistor hfe are not exactly the same. Unless STK specify equivalent transistor circuits.
Esto si funciona!? Es el mejor puto vídeo eso se necesita para reemplazar estas guevonadsss ome felicitaciones
Baru tau kalau stk bisa di ganti PNP & npn sangat luar biasa👍👍👍
Very good idea regarding the prices of hybrid obsolet units ! many thanks !
Hello my friend, you are brilliant at this work. Thank you for this information. It was very useful to him Item 0040 It has been unemployed for a long time, and my question is, when the transistor is replaced with 2, it still has the same power. Should I leave the middle connections permanently? Thank you very much, Your Honor.
Norman gates ...absolutely right.
I have try and done but no succeed
It's impossible cause final TR need bias regulator and driver...
Excuse me sir you cannot replace darlington, to a single transistor just like that.. What about your drive and biassing circuit.?
I agree with you have no good result
Killer music to replace your transistor to!
Hi! great job! You can help me with the SVI4004 on Technics amplifier? What can I put instead? and some schematic working. Please help me! 😔
Cómo estas amigo me gustaria conocerte tengo varios de esos equipos hace mucho esperaba algo asi no hagas caso a los que te critican, quienes lo hacen no aceptan qué tienes ingenio!!
Nice work! Saludos
Ni siquiera se ve terminado ,así que no se sabe si de verdad ,funcionó así ,y si lo hace que tanto dure ,por qué no trae los integrados originales.
yes you can, but dont forget the driver transistor inside (stk) you need to check it for biasing. ;P
Bad idiea, power output's not enough and bias's higher
GRACIAS por publicar el circuito completo del STK 0050.
tendras el circuito completo del STK 0029, tengo un technics SA-202 con un canal quemado.
muchas gracias por tu generosidad.
Foi de maravilhosa ajuda essa dica q vc me deu obrigado 👏👏👏👏👏
like this work but haven't done enough of it
Nice video, thank you
не так давно ремонтировал усилитель TRIO-7500. там тоже была сгоревшаю микросхема(микросборка) TA-100 (типа STK). Цена на нее очень высокая, порядка 200$ Пришлось проектировать и травить плату взамен этой микросборки.
Dear Sir, may i have a question regarding amplifier technics power IC STK 2068 II , The problem we dont have available parts especially this Power IC, pls if possible try to help me how to convert to ordinary power transistor or else if you have an IC pls i will buy it...thank you very much and more power god bless you...
Does this method work in any STK or it has a particular number it worked with
STK0039 es cuasicomplementario, lleva 2 transistores NPN, y el STK0040 es complementario, lleva un NPN y un PNP, además esos son darlington, el A1943 y el C5200 no lo son, necesita transistores drivers, falta el ajuste de bias también.
English?
Total amigo , realmente no es correcto ese reemplazo 🙄🙄
Cách chuyển IC sang TRANSISTOR ampli👍
😂😂😂
Замена на 2 мощных транзистора разной проводимости в одном корпусе! Правда тяжело выпаивать 10 ножек без отсоса?
EXELENTE EXPLICACION MUCHAS GRACIAS.-
Amigo tengo uno asi con ese problema y no se como areilarlo
It would have been nice if you could have focused on the npn that's would be able to tell which one you were using but obviously you were going too fast and if you really didn't consider that other people might want to know
Great !
We had exactly the same in 80's. This is typically the death reason of this amplifier.
Hello all right, I ask you I have a Receiver The Fisher Sr 2004A the audio outputs are STK can I replace with which Transistor to be stronger?
Good
Saludos y excelente su vídeo tengo un amplificador Sanyo y tiene un stk 4182 || y quisiera adaptarlo a Transistor pero no el equivalente a ese espero de usted esa ayuda gracias
I DON'T SEE A PART 2 .... so I don't know if this even works , to me , changing darlington transistors with one transistor does not sound right.....
no its not he has no drivers for the outputs or biasing and temp compensatiion vbe-x or diodes either lol
but aparently in part two he is going to make the whole chip replacement so we will see
Que se hace con la relacion interna de los pines 3 y 8. y el pin 1 y 10 entre ello hay varias piezas ?
Se los puentea
Hello, Mr. great movie 👍👍👍 you are able to tell me what I could change Sanyo rsn3305 to technics sa-ex120
I did replaced (not knowing) the output transistors were Darlingtons with normal ones on a Crown D150 amplifier.
It hummed like hell.😢
It won't work.
Hy sir,I'm form Indonesia,
please ,,I will show your realistict video,don't only schema..
Thanks....
He's better than producer
awesome video keep it up dude...
Nice work!!!
thanks. please watch part 2 for full video
@@electronicshelpcare Thank You!
@@electronicshelpcare where is the link
Bhai
Sony fh7 kay deck amplifeir pay koi video banao
Aur uskay ic ko tt5200 \1941 k sath replace krna bhi sikhao pls
Wahoo amplifier identical to mine! Interestingly,
I always thought it had integrated circuit amplifiers
That's very brilliant but I found out that there's some STK with more than 10 pin. So what do we do when that happen
Hi there.
Got JVC ja s 22 and is dead. No sound at all through speakers or phones input.
It turns on, lights are present, can hear transformer but no sound.
What to buy best? Original sanyo stk0040 or replacement. Any difference in sound?
Thanks
Your tester is very sensitive, is that an original sanwa?
Very nice Background ..LOL 😂😂🤣
I dunno if stk IC could replace by simple transistor, usually I prefer remove motherboard overall
I agree. You can't replace a Darlington IC Circuit with just 2 bipolor transistors and then expect it to work properly.
Great job
Very good info.
where is the installation video and test results
2nd transistor number not visible...
Please mention...
I have STK465. With Is not working ..
It will be same as u doing ?
hi, can you please indicate what transistor reference i use and what the video does not show?
in advance thanks for the solution
Where can I find a similar clip with a STK402-090S or STK402-090SB transistor?
Dear sir hamare pass amplifier me stk ic 4151ll lage he el channel band h kya ic aap stk ic4151ll laga denge please reply kya prize ka bill hoga
Looking kompleeceted...
Hello, could you make a video for the STK402-090, would it be the same ????
It is not possible to get some of the STK***** modules as they have been discontinued so if you can replicate the chip from the circuit diagram using descretes then that is the way to go.
Thanks for your concern
You've done well but you move fast
Muy bien, I Love, Gostei Muito
good video...
This trick can be use stk 413 - 490 sayno. ????
Stk 4026 is posible?
yo quier a segunda parte no sean malos jajajaja saludes desde honduras
Hello, I have 5.1 surround sound system(home theatre) here is the problem
Couple of months ago it stopped working, as in it doesn't amplify the input sound to the speakers.
But just yesterday, accidentally I plugged it to 110v source(normal 220v) and it worked, of course there is a buzz sound coming out it(I guess that's because of low power), on 220v it's still not working.
What could possibly have gone wrong?
I have a stk032 25w 10 pin what is matched vs ?
Nice!
Hola, tengo un stk 086 dañado, como y con que transistor lo puedo recuperar?
Thanks brother
Do you have a source for original STK ICs.
Muchas Gracias
Малочек если взялся за этот узелок я если честно сказать раньше их ремонтировали а сейчас переключился на электрику в автомабили
Bonjour ou se trouve la partie 2 merci
Why dont you speak? WHY DO SO MANY "HOW TO" VIDEOS ON RUclips LACK A VOICE OVER? WHY? Videos like this would be so much easier to follow if we didn't have to stop and read all the time. We are not in the age of silent movies anymore, there was something invented way back called the Talkie, look in to it.
Because this person does not know what the hell they are doing. it seems to me like this is the type of person that claims to be an engineer, by reading the the first chapter of an electrical engineering textbook. Or as if taking only the first year of schooling to become an engineer and nothing more. It seems they have a very basic knowledge of the engineering of electronics but nothing more. because there is several simple and some quite drastic mistakes that this person makes in several videos if not all of them. if you wonder why they don't talk this is why because they don't have any knowledge in the subject but just a very rudimentary introduction to this field of engineering. save yourself some time and effort and heartbreak and don't attempt to rebuild the this channels work I have yet to see one that is correctly done from A to z
Sir ask klng kong bakit nasusunog ang speaker ano po pangunahing problima
Hay ,xin cám ơn
Assalamualaikum boss nak tanya boss macem caranya STK di ganti pinal toshiba boss tolong buat tutorial boss
Tout à fait exact. J'ai déjà remplacé des transistors de puissance par des diodes musclées. Parfait. puisque ces transistors ont pour schéma équivalent des diodes non.
how about a stk 4181v sir,,can you help me
La segunda parte? No esta
Good 👍
Where do you stay in India??
Kak alat ini ada ya stkStk4030 II
transistor sk3875
Great music!!!!
can you give me datasheet of STK412-240M ic thanks
Nice jobs equivalency npn pnp sc5200 sa1943
Ils jouent le rôle d'ampli en courant. "aiguillage"
STK next 2se5200+1943 ic Chlaga
My home theater transistor want to change but I didn't get the same number..transistor number j213 please help me out.
hi good play
Buenos días amigo tengo una planta technics su-8011 un canal no le funciona le monte los transitore 2sc5200 y 2sa1943 y no me fuciono
Hello friends Greetings from Venezuela I need your help I have a technics brand amplifier model SA-EX140, the integrated IC class H model RSN 3305 OF 26 PINS burned. INTEGRATED ARE DISCONTINUED BECAUSE THEY ARE VERY OLD AND THEY DID NOT MANUFACTURE I THANK YOU VERY MUCH YOUR GRAM HELP PLEASE FRIEND
puedes reemplazar el integrado con dos irs 2092 que venden en ebay cuesta 15 $ americanos www.ebay.com/itm/IRS2092S-500W-Mono-Channel-Digital-Amplifier-Class-D-HIFI-Power-Amp-Board-FAN-/184033435092 siempre y cuando sepas donde esta la entrada de audio y salida del integrado puede ser reemplazado con otro modulo ya que no los fabrican o los fabrican falsos
Lo hice hace muchos años atrás, siempre y cuando los transistores drivers y resistencias estén ok
Cómo se llaman esas cosas q le.puso nuevas? Y si van cualquiera o tienen q ser depende el equipo
Tengo un stk 404 -1305 etepa de subwoofer hybrido de un sony
How many amps can handle Stk-0050?
pourquoi mesurez-vous la tension tout le temps?
power jaman dulu ruwet komponen besar besar
The music for this video is dope, what is the song and who does it?
Funky space princess
i have a technics amplifier SU-Z11 Ç with STK-2028 broken , can you help me please!!
If you go with IRF devices then you should be alright as it seems to be only parts from the far east that get copied.
Where is part 2video?
Please visit for circuit diagram
www.pinterest.com/electrohelpcare/pins/
Nice video
Thanks
For more please visit us
electronicshelpcare.com/
Please make a video modify stk461 ic to transistor base akai amplifier