Bác thợ này cao nhân ! Chúc bác nhiều sức khỏe !!!!!!

สวดยอดช่างของจริง ทำแล้วต้องดี

A sua profissionalidade é incrível, parabéns pelo o trabalho muito bem feito. Sou aqui do Brasil da cidade de Fortaleza Ceará.

I think this is the first restore/repair I ever saw of your's. I will hold all negative comments. I was glad to see your simple technique for testing the transistors on an analog testing meter.. Not so easy to do that on a digital testing meter. Your video kept my attention.

@selectorerwin1don12

2 жыл бұрын

Lol for real but i think thats the old school way also da best way

@turnepokkamandag2138

2 жыл бұрын

Pake ko 😆

Excelente profissional 👍 Botei fé 🇧🇷

bongkar abis nih heheheh

awesome restoration, i learn from you much

Hola amigo sos lo máximo la tenes bien clara a la electrónica como quiero ser como vos para trabajar así y hacer mucha $$$$ soy de argentina salta veni a la Argentina yo te doy donde vivir

I love it how mr electricity never wears gloves. Until the bucket of soapy water come out… 😉

...applause, master job, it´s a pleasure to see this restoration...

Super amlifer super very good video nice work very very good video sir thank you

esse sim sabe trabalhar e ñ tem preguiça parabéns o seu trabalho é nota 1000

21:09 What a monster that!😎 Great work!👍

Es un deleite mirar la forma de trabajar,felicidades.

Hola saludos mr Electricity te felicito es un buen trabajo muy bien hecho así habían de trabajar los que ven tus videos saludos desde puebla pue.Mexico

Excelente trabajo!!! 👏👏👏 🇦🇷🇦🇷

Sir, with people like you this would be the perfect world.

@braydenh190

4 жыл бұрын

Especially since its ending.

Mr Electricity you work amazingly seems you knows the design and circuit configurations of the amps didn't see you label or marks any of the hook up wires .

my no.1 dream i have a power amplifier .. watching from phillipines

I have so much respect for what you guys do...Gretings from Poland :)

Hi nice amp indeed. It looks very well designed and also parts seem very well sized. Great job as usual. It is a pleasure to watch your repair videos Thanks a lot. Kind regards, gino

From Malaysia...👍👍

FANTASTIC, RESTAURATION, BEAUTIFUL AND VERY VERY BEST OK 👍🆗

For sure you are great technician by professional big up man .....I got some things from your job

he's great, i will bring my ingrated amp for restoration. God Bless Mr. Electricity.

Little more and u will have whole sound system for big concert xD As always great work, bravo!!!

NOTA 1000...PARABÉNS!

Te felicito por darle vida a este buen ampli, saludos cordiales Nezahualcóyotl México

Macht immer wieder Freude einem Experten über die Schulter zu sehen. Großartige Arbeit!!! glG.

Sangat detaell. Serwis dan bagus.👍👍👍

Молодец, very good job!! 👍

Master nya Power, hebat 👍👍👍👍👍

Nice work sir.

Good job definitly i wasnt gonna take all those wire apart..lol amp looks n sound good

Great, you are full fledged service personal keep it.

Looks to me like one of the many inexpensive amplifiers that cloned the layout of the Crest CA series amplifiers. No schematics appear to be available, although the lack of mica insulators shows that the circuit topology is not the same since the collectors are apparently grounded. By the way, there is a torque specification for TO-3P transistors, usually between 5 and 10 inch-pounds- significantly less than people tend to think. It has been mentioned already, but there is a reason why the original transistors failed. Checking the quiescent current in the output stage as well as running a sine wave test into a dummy load and looking at the output on a scope are worth doing.

@gino3286

3 жыл бұрын

"the collectors are apparently grounded" i would like to ask if this is a good technical solution. It seems very convenient for output stages. I have a qsc usa 400 and i guess it is made in the same way ? What low power pro amp would you recommend ? something with 250w/4ohm i mean. Thanks a lot and regards, gino

@H-77

3 жыл бұрын

@@gino3286 Very much depends on the implementation. QSC has had a lot of success with that topology- they perform well and are very reliable. I've never really played with the topology myself, but eliminating the mica washers has both thermal and cost of manufacturing advantages. Another way to eliminate the need for mica washers is to use separate, hot heatsinks for the NPN and PNP sides.

@gino3286

3 жыл бұрын

@@H-77 I think it is a interesting method The heat transfer must be optimal and also the thermal equilibrium between the output transistors. Grounding the heatsink maybe improve also safety ? Thanks a lot again. Kind regards, gino

Excelente trabalho ficou top de mais 🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷

Installing power transistors without checking voltage bias is very risky. You might end up changing them again and again.

@JRNelson78

3 жыл бұрын

As i saw, there is no trimmers on the PCBs. SO i guess it`s an automatic biasing, they monitor the output offset, and may be that chip on the board (may be OP amp based circuit) ajdusts it.

@2Cineman

3 жыл бұрын

I've repaid many amplifiers, and in most cases where ther are blown output transistors, the drivers are usualy blown too . didn't see the guy do any fauslt finding, other than a diode check of the output transistors - fake ivideo if you ask me

thank you so much for this video. I wish I have the confidence and technical expertise.However, looking at this video helps me a lot gain more insights and understanding on how and where to test some basic troubleshooting area of known issues. It looks easy in the video but they aren't. I am now a big fan of your talent. God bless you Bro ! Keep doing what you love to do. If you need a partime apprentice in the weekend. I would like to apply.😁 #loveelectronics #cebu

Thank you for the thanks to this work which is more wonderful and tag that you are all quiet. Order your honest sanitary maintenance of modern auctions from where we start. This is our voice and respect, our gravity profession

This guy is amazing !!!!!!

Muantap👍sukses selalu kawan🔔👍 aku yakin kawan bukanlah kacang yang lupa akan kulitnya.salam kawan baru dari Bogor 🙏

A sua chua chuyen nghiep hay qua ko biet dia chi o dau sa binh luan toan tieng nuoc ngoai xin cam on

Super!👍👍👍

Mình thích cách bạn làm lắm

Very good.

Subscribed!! because damn that transformer is HUGEE!!!

Jordar Sarvis Kari Chhe Ho Bhai

Competently skilled technician. 5☆

Nice work, Nice amplifier.. 👏👍

Super create👍

Dear Sir, thank you very much indeed for your always very great video and very educational. However i like to use a little brush for thermic paste And the electric drill seems to have too fast rotation. Clearly you were in a hurry ... i love your videos. When i will retire i will try some restoration work ... i love audio equipment deeply. Thanks again and kind regards, gino

Yeah man, nice work. Watching from United States.

Que maravilha 👌

SÜPER BIR IŞCILIGIN VAR ELINE SAGLIK

Very good video Amplifier Thank you

Bravo mr on a besoin de vous ici merci

//KAUAN ViDEO\\👍👍👍👏👏

ESPECTACULAR!

Mr E, theres no way that you know how all that goes back together. I'm convinced the 2nd half of this video is just the 1st half running backwards.

@AstrosElectronicsLab

3 жыл бұрын

Doubtful. Also, a camera was recording the entire time. It isn't too hard to go back and look at shot footage to see where things go. Plus, if you work on enough amplifiers (I know from experience), it's not hard to work out where wires go. PCBs are marked and cable lengths bend over time to roughly where they want to connect to.

Ye man,nice job indeed,,,,,,,,,South Africa 🇿🇦

Ok , very nice👌👌👌👏👏👏

Tidy work. I have an old amp very similar.

Great video ... but replaced all those shorted components ... all back together and flick the switch and Voilà !! works !! Surely there was abit of last minute oopsy in between ??

@AstrosElectronicsLab

3 жыл бұрын

Meh, don't think so. Usually when output transistors short (because the output was shorted to ground), replacing them is usually all you have to do - if you're lucky. As long as it didn't take out any of the biasing components, all good. It looks like at least one fuse blew on each board protecting the rest of it.

Top uoww show parabéns quem sabe sabe gostei 👍

It is a good work of restauration and a very beautyful amplifier.

super restoration mais normalement il faut mètre le volume a fond sur l'amplie après on règle sur la table de mixage

Wow very nice restoration.

Esse cara e fora de série

the man is capable!

Weldone my friend. Very nice restoration. 👍

хорошая работа молодец

@gafurjaborov9571

3 жыл бұрын

Привет где этот мастер я адрис не понел лотинский читат не умею руский магу

Nice, I'll buy it now !!!

Buen trabajo😊

He was so sure from right at the beginning that he's going to fix it.

Excelente bro

what isa the name of your liquid dispenser i like it

SIR YOUR SOLDERING IRON IS VERY DIFFERENT 👍👍

Very good job.

What kind of cleaning chemicals are you using for cleaning all the electronic boards????

Amazing job! 👍

nice work brother 👍👍👍

Very good!!!!

Did you check bias and drivers? And capacitors too.

nice video bro btw where do you get all of this cool stuff that you restore?

Si Hola hermosa bien trabajar

Mantap gan

Mantaaaa bossss

Thorough beautiful work. GONGRA!

Parabéns.

sir can i ask what you use to clean the the board.look that your so good doing well.

Nice Job!

cool bro i did fall asleep

Good work

Complimenti.

Excellent

just loosen the screws with a hand screwdriver Otherwise you can damage the screw thread

How do you know how you connect everything again? And do you only check the obviously fault parts like fuses and transistors? :D I like your videos very much :)

@valiveltan3791

3 жыл бұрын

Srd

@willlove8067

3 жыл бұрын

Y6yyyyy ter 6yyy6y66

@SauvikRoy

3 жыл бұрын

Connecting everything back together could be from recording before disassembly, or from having the schematics. Finding fault is systematic. These are relatively simple circuits, and you can check systematically, for checkpoints, and then trying to look within the faulty stage.

mantap master .berapa harganya.klau di beli dengan ongkirnya ke flores ende..

Ajib,, 👍👍