{749} SMPS Is Not Working || SMPS Not Turning ON

Рет қаралды 123,391

Күн бұрын

in this video number {749} SMPS Is Not Working || SMPS Not Turning ON. i explained how to troubleshoot, test and repair KA7500/TL494 based switch mode power supply. this smps controller drives the half bridge topology using D130077 NPN power transistors. i found the power transistors and related components damaged, i replaced it and it started working
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00:00 Introduction
00:35 How to apply power an electronic circuit
01:04 how to measure ac voltage using multimeter
01:25 how to disassemble power supply
02:12 how to test / check fuse using multimeter
02:35 how to test KA7500 / TL494 pwm controller ic in circuit
02:50 How to repair smps step by step
03:25 how to test switching of smps controller ic
03:56 KA7500 TL494 is not starting up

Пікірлер: 272

@electrolatif Жыл бұрын

First KZfaqr he explains very well how to repair, you are good teacher Thank you very much 🥰

@HaseebElectronics Жыл бұрын

You are welcome

@ddistrbd1 Жыл бұрын

I absolutely enjoyed this video, I'm a 68 year or newbie with near zero knowledge of electronics and yet I followed this video all the way to the end which is a testament to your ability to teach . well done.

@garymucher4082 Жыл бұрын

Bravo, a typical troubleshooting section when you know what you are doing. Problem is, a lot of techs just don't have the vast knowledge to know what they are doing and they shotgun their approach until they luck up on the defective part(s), if at all. I like troubleshooting circuits. It is like a mystery story as to who done it! Thumbs Up!

@mrapple7187 Жыл бұрын

جزاکم اللہ خیر Sir Every time I think I need a teacher who teach me like this.

@yalcnsoner5712 Жыл бұрын

Tum videolariniz gibi bu videonuzda akici ve ogretici hocam .yorumlar kisminda pakistanli oldugunuzu okudum.ben sizi katar yada suidi oldugunuzu tahmin ediyordum.hic. farketmez sizin gibi bilge ,mesleginde cok iyi olan insanlari izlemek ne guzel.Turkiyeden selamlar ( essessellemun aleykum.verahmetulla)

@HaseebElectronics Жыл бұрын

Ve aleyküm selam sevgili kardeşim. temelde Pakistanlıyım ve şimdi Ürdün'deyim. Mühendislik hayatımdan edindiğimiz tecrübelerimi paylaşıyorum, belki izleyenlerime bir miktar bilgi sağlayabilir. en iyi dileklerimle ve tatlı selamlar kardeşin Muhammed Eşref

@roshnivaldar2746 Жыл бұрын

Well done , engineer with the knowledge how powers supply work and your on faulting is very methodical. thankyou

@gordonlovett71 Жыл бұрын

Awesome job there buddy. Now I can dig out some of my failed power supplies and see what's wrong with them.

@arrafiingoprekz6003 Жыл бұрын

MasyaAllah brother thank you Your explanation helped me so much Cheers from Indonesia May Allah Bless you

@karlwalton4953 Жыл бұрын

Really Good, thanks for going through this and sharing your detailed experience of the layout and all the likely fault. Very helpful

@HaseebElectronics Жыл бұрын

You're very welcome!

@dannye5335 Жыл бұрын

Excellent video. I enjoy your repair techniques. Do you do any repairs on Crt tvs? Specifically no high voltage from the horizontal drive section is what I would like to learn more about.

@hardianprastyo923 Жыл бұрын

Same problem and yes, i replace the transistor and resistor it work again. Thank you so much, you are great!

@HaseebElectronics Жыл бұрын

it is my pleasure

@hdl4259 Жыл бұрын

Very well done my friend, it is nice to watch your skilled work.

@W1RMD Жыл бұрын

They spared no expense with their use of heat sink compound! It probably won't fail anymore. Thanks and happy Monday!

@HaseebElectronics Жыл бұрын

best regards and special thanks for your valuable comment

@englishrupe01 Жыл бұрын

Really helpful troubleshooting and explanation.....many thanks.

@HaseebElectronics Жыл бұрын

best regards

@Docbill57 10 ай бұрын

Thank you, sir. Very well explained.

@afayimo Жыл бұрын

Masha Allah... Very knowledgeable. very very good Teacher.. Salam from Germany.

@Docbill57 10 ай бұрын

Thank you sir. Very well explained.

@gauripartapshanker9197 Жыл бұрын

Informative vedeo. Thank u so much.

@tahir4010 Жыл бұрын

Thank you for making such informative videos

@ideiasnuncaed4595 Жыл бұрын

Obrigado amigo muito bom seus vídeos tô aprendendo muito

@Fardeenfarwest 11 ай бұрын

AssLamualaikum Warahmatullah ibarahkhatuhu. Very good explanation and educative also. Jazakumulah KHAIR

@HaseebElectronics 11 ай бұрын

wa alaikum salaam wa rahmatullah wa barakatohu

@NajmakiRasoi Жыл бұрын

MashaAllah bhut zabrdast information Allah bless you and your family Amin

@HaseebElectronics Жыл бұрын

thanks a lot dear sister

@rosyidin2842 Жыл бұрын

Assaamualaikum wr.wb....Saya dari Indonesia selalu siap menonton tutorial dari anda..sangat bermanfaat ilmu yg anda sampaikan...sukses selalu ya buat anda...semoga berkah segalanya ..Amin...!!❤❤❤

@HaseebElectronics Жыл бұрын

wa alaikum salaam, terima kasih banyak saudaraku. Allah memberkati Anda

@sujitchatterjee5434 Жыл бұрын

Thank you so much for great informative video

@lakshminarayanans6767 Жыл бұрын

Well explained. Can easily be understood. 👏👏

@HaseebElectronics Жыл бұрын

it is my pleasure

@amirarsalanhoseinkhani 7 ай бұрын

Thank you very much for the educational and interesting videos you make ❤❤

@ziadfawzi Жыл бұрын

Thank you so much.

@felipetomaz1843 Жыл бұрын

Hi, great work you have done! Do you have fixed some SMPS with the oscillator 1200P60? Could you please explain How does it compare with the family 3843? Are they interchangeable? Thanks a lot and have a nice day. Regards.

@ajayisamuel6448 Жыл бұрын

Thanks for sharing. Very insightful sir

@ClbnaVGM 7 ай бұрын

Good video thank you !

@k.pathirana.8868 Жыл бұрын

👍🙏.Sir, excellent . My congratulations.

@HaseebElectronics Жыл бұрын

Thanks and welcome

@thindelectronics8216 Жыл бұрын

Good morning sir very nice video good information thank you sir 🙏

@VijayVijay-p7l 21 күн бұрын

Thank u for giving explanation

@muhammadishtiaq24 Жыл бұрын

Excellent thanks for sharing this informative video

@HaseebElectronics Жыл бұрын

THANKS A LOT

@Yorumcu63 Жыл бұрын

Great video also have great tricks My question is about PWM controllers have some protect features (for example over voltage Protection etc) How understand pwm controller's in protect mode ? Because not working power supply and all other components looking normal. For example how can make "Troubleshooting board for IC" * We can try extarnal power supply voltage for PWM controller * We can apply suitable frequency and wave to need IC pin/pins for find problem Could you make a video for a famous PWM controller's "How understand PWM controller's protect mode"

@susantaatha6468 Жыл бұрын

Thank you for beautiful knowledge sharing.

@HaseebElectronics Жыл бұрын

it is my pleasure

@vijayakumarkumar9190 Жыл бұрын

Very good and useful information sir thanks for sharing this knowledge to us

@HaseebElectronics Жыл бұрын

best regards

@azhar6713 Жыл бұрын

Thanks a lot for your videos, I really interested in Electronic. And I also sent an email to you for a help.

@genevasimmonds8208 Жыл бұрын

Nice easy to understand video

@zaldydeleon1946 Жыл бұрын

Brother i am sorry to ask question out of your topic but maybe u are the right person to ask....wht is the use of impedance sel. at the back of my Sony amplifier thnks a lot Bro for ur time .

@Crystalservices Жыл бұрын

Great information Thanks for sharing 👍

@HaseebElectronics Жыл бұрын

best regards

@abdulhameedtaiwo1003 Жыл бұрын

Nice video and well educative. Are you living in Dubai?

@fuzzs8970 2 ай бұрын

Thank you again for your videos. Just maybe a slight correction resistor don't short circuit. I may be wrong of course

@Habibulla.M Жыл бұрын

Very informative

@chinnarao326 Жыл бұрын

Resp Sir! Excellent Class Dhanyavaadh Sir. -- ChinnaRao

@HaseebElectronics Жыл бұрын

THANKS BHAI JI

@chinnarao326 Жыл бұрын

Sir Thank U Sir

@nicoschadjidemetriou4373 Жыл бұрын

Excellent quality and educational video. BRAVO and thanks my dear friend.

@HaseebElectronics Жыл бұрын

best regards

@knowledgehub872 7 ай бұрын

Really great video... Keep it up brother

@HaseebElectronics 7 ай бұрын

Thanks a lot 💕

@adophmadondo7660 8 ай бұрын

You are the baddest, thank you so much

@HaseebElectronics 8 ай бұрын

Thanks a lot for feedback

@electroniquepassion Жыл бұрын

Useful video 👍👏👋

@HaseebElectronics Жыл бұрын

best regards

@nelsoncarmengomez7416 Жыл бұрын

Uso subtitulos al español,proscatinador en el ingles, pero te entiendo de todas maneras. Me gustan tus videos. gracias compañero.

@HaseebElectronics Жыл бұрын

Buenos días. Estoy agradecido por tu hermoso comentario. mantente bendecido y que tengas un buen día

@alpha_centaurus5396 Жыл бұрын

Thank u bro

@jalal76 Жыл бұрын

great job ....... thanks

@HaseebElectronics Жыл бұрын

thanks a lot dear brother

@craftymulligar Жыл бұрын

Good tech skills.

@rahulpatelgujratahmedabad3497 Жыл бұрын

GOOD TICHING KARTE HO AP THANKS 👍👌👍👌👍👌👍

@HaseebElectronics Жыл бұрын

thanks a lot

@AliRezaJoodi Жыл бұрын

Thank you

@fadlibrahim8654 4 ай бұрын

Hi , Your explanation of the lesson is very interesting and we enjoyed it ، which name and model of this desoldering you used please?

@fuzzs8970 Жыл бұрын

Hello my friend. Thank you very much. What is the multi meter that you were using? Seems to be very nice one

@HaseebElectronics Жыл бұрын

best regards it is Aneng Q1 multimeter

@HaseebElectronics Жыл бұрын

you can check video number 470 for more details

@sinisaradosevic6794 Жыл бұрын

Great video.👏👏

@HaseebElectronics Жыл бұрын

best regards

@garn6223 Жыл бұрын

Thank you very much sir 🙏🙏🙏

@HaseebElectronics Жыл бұрын

best regards

@shujauddinshakoor2469 Жыл бұрын

Shukran jazakallah

@HaseebElectronics Жыл бұрын

most welcome

@geraldfactor5781 Жыл бұрын

very informative 👏👌

@HaseebElectronics Жыл бұрын

thanks a lot

@asharsumari9313 Жыл бұрын

Thank you sir

@HaseebElectronics Жыл бұрын

best regards

@francospagnolo1385 6 ай бұрын

Thank you very much

@HaseebElectronics 6 ай бұрын

You are welcome

@fatih81 Жыл бұрын

Güzel anlatım beğendim takipteyim dost Pakistan a selamlar

@HaseebElectronics Жыл бұрын

en iyi dileklerimle ve özel teşekkürler

@PeteDubler 4 ай бұрын

Vrey well done. You first checked the voltage across the two large filter capacitors. How would you proceed if the voltage is not symmetrical across theese? (Zero volts on one of them)

@Versatiledani Жыл бұрын

informative sharing

@HaseebElectronics Жыл бұрын

best regards

@Watch__This_ Жыл бұрын

Great video....

@HaseebElectronics Жыл бұрын

thanks a lot

@merakitchen4875 Жыл бұрын

Useful video

@HaseebElectronics Жыл бұрын

Thanks a lot

@Ahmedsayedzorro 6 ай бұрын

👏👏👏👍

@gopalarao8578 Жыл бұрын

Hi sir namaskaar. This video is very informative. Can we check the output of the ic TL 494 before replacing the transistors. Thank you sir 🙏

@HaseebElectronics Жыл бұрын

yes we can i will explain that we can check drive without transistors

@Edmorbus Жыл бұрын

Thanks for sharing

@HaseebElectronics Жыл бұрын

it is my pleasure

@sukhdeosingh617 Жыл бұрын

Thank you very much Sir for your valuable information. Sir in this ckt Opto coupler is not used then how the feed back is working to control the output

@HaseebElectronics Жыл бұрын

it is secondary side pwm controller. it uses direct sense line to the PWM controller voltage mode error amplifier. it uses pulse transformer to drive the power driver stage, so pulse transformer provides isolation

@AbdulMomenZargar60 Жыл бұрын

Subha Ka Salaam Sir Jee

@HaseebElectronics Жыл бұрын

apni duaon mein yaad rakhein Zargar bhai

@snhongo1 Жыл бұрын

Great video

@HaseebElectronics Жыл бұрын

thanks a lot

@FLomasterZ Жыл бұрын

5:55 Nice desoldering iron. Have you video about it?

@HaseebElectronics Жыл бұрын

best regards it is WELLER WR3M kzfaq.info/get/bejne/ptByq5p3kq6Ug3k.html

@ThiagoTuareg Жыл бұрын

hello friend, congratulations for the video, like your videos that you have been putting on the platform I am managing to learn a lot, but I have a doubt, how do I change the output voltage of a 24VDC source to 48VDC. Thnx so much!

@francoisguyot9770 Жыл бұрын

impressive!

@HaseebElectronics Жыл бұрын

best regards and special thanks

@mehmeteminakbaba5683 6 ай бұрын

Merhaba,bir sorum olacaktı,st13007,TL 494,c1815 transistörleri değiştirdim.Kapasitorleri,dirençleri,diyot,zener diyotleri ölçtüm hepsi sağlam.Fakat büyük smps trafosu gürültü yapiyor.Cikistan 7Volt alıyorum.Arizanin nerden kaynaklı olduğunu yazabilir misiniz, teşekkür ederim.

@SKElectronics Жыл бұрын

good stuff

@HaseebElectronics Жыл бұрын

best regards

@DavidTorres-kl2rt Жыл бұрын

very good video hallo from mexico

@HaseebElectronics Жыл бұрын

most welcome and special thanks for your encouraging feedback

@alhassanomran244 Жыл бұрын

Dear brother, thanks for your great explanation and informative videos. I have a 24V SMPS that gives fluctuating output between 4-7 volts and it uses TL494, I check VCC and it was 7.3V, feedback is 5V & Ref is 5V. Pin 8 & 11 are fluctuating and the freq is not stable. What else shall I do to fix it? Your help is highly appreciated.

@lucasrocha4329 Жыл бұрын

Seek for shorted componentd in the cold side.

@homemade-it2495 Жыл бұрын

kzfaq.info/get/bejne/j8iFmdd92tyzdJs.html

@rmjnm Жыл бұрын

Nice.

@HaseebElectronics Жыл бұрын

best regards

@senakabandara4367 Жыл бұрын

Good very good thanks

@HaseebElectronics Жыл бұрын

it is my pleasure

@sunil-S-420 Жыл бұрын

Nice video👍

@HaseebElectronics Жыл бұрын

best regards

@nayanjagirdar8408 Жыл бұрын

👌👌👌👍

@HaseebElectronics Жыл бұрын

BEST REGARDS

@lawaljimoh9837 Жыл бұрын

Hello, thank you please make a video on how to differential between transistor and MOSFET and how to test each of them with multimeter. Thanks

@martinkuliza Жыл бұрын

This is honestly something you could google 1. MOSFET's are Transistors 2. Transistors have 2 main functions to be a switch to be an amplifier (they have forward gain) Look at the datasheet 3. Transistor pins are BASE, COLLECTOR, EMITTER 4. MOSFET's and JFET's Pins are SOURCE, GATE , DRAIN Here is how to test them kzfaq.info/get/bejne/aK-bdLOGnr6XY58.html

@coolfisher1644 4 ай бұрын

Great video but a schematic would make it much easier to understand and visualize your troubleshooting steps.

@user-jt2wu6no4p 9 ай бұрын

Thanks. I have LG HT356 SOUND

@orlandoponce9200 Жыл бұрын

good

@peterfrancis3865 Жыл бұрын

Nice 👍 100%

@mohmadarafeh7387 6 ай бұрын

❤

@electroskills Жыл бұрын

Sweetest bro

@HaseebElectronics Жыл бұрын

thanks a lot

@kdrbilgin1803 Жыл бұрын

Nice

@HaseebElectronics Жыл бұрын

best regards

@abubakaryusufabdullahi37 Жыл бұрын

Masha Allah teache

@HaseebElectronics Жыл бұрын

thanks a lot

@Dc_tech386 Жыл бұрын

Good night sir I have a few questions the diodes or they connected to emitter and collector and what what or the amperage ratio of the diodes because I want to ad Shockley diodes to my emitter and collector for spike reduction so I want to know if a 1 amp Shockley diodes can withstand the incoming high current of of 200amp to collect so but I can’t find a small diodes the can handle that much current so I want to know if the 1 amp is ok I don’t want to blow up my circuit to find out

@mhnabin302 Жыл бұрын

Can you make a video on making one smps dc power supply with every details and breakdown, and items used and where to purchase. A video no one ever made, a class no university ever taught. Thanks

@mitropoulosilias Жыл бұрын

it is not easy thats why... and involves high lethal voltages.. better buy one

@HaseebElectronics Жыл бұрын

welcome brother first of all i am thankful for your valuable comment second thing. that a power supply design is complete science and it needs a very long, deep and interconnected to each other calculations. so it is really near to impossible to cover this topic in one video. because each step, each component. each parameter needs scientific calculations, so it will much difficult to do it. i will recommend that if you study Pressman's (book name Switching Power Supply Design fourth edition) it is perfect

@HaseebElectronics Жыл бұрын

@Theseus you are right.

@mhnabin302 Жыл бұрын

@@HaseebElectronics Thank you for the suggestion. I would also request that you can make a video on the solar charge controller. That could be a new and demanding topic in recent world electricity shortage cases.

@syduploads1990 Жыл бұрын

you should make video on series lamp protection unit.

@Maintencelab Жыл бұрын

ماشاء الله قبل عدة أيام لدي نفس المشكلة شكرا لك شرح رائع عندي سؤال من اين اقدر اشتري نفس الأداة التي تزيل القصدير

@HaseebElectronics Жыл бұрын

www.indiamart.com/proddetail/weller-wr3m-3-in-1-high-end-electronic-pcb-soldering-de-solderign-hot-air-gun-rework-station-9437196497.html

@HaseebElectronics Жыл бұрын

WELLER WR3M REWORK STATION

@ahmedfrhan7529 Жыл бұрын

السلام عليكم My friend thanks for your work I want to explain how we can enabled Ac PCB inverter If they are separated Power PCB and inverter pcb

@ramdanramdan9440 16 күн бұрын

Aslkm. Saya lagi belajar. Alat nya semacam seperti pawer suplay. Mungkin kinerja nya sama yg seperti yg di konten itu. Tp ini pawer suplay yg ada di industrial pabrik di masuk in listrik langsung sort listrik