{528} How To Repair SMPS || SMPS Repair Step By Step || Switch Mode Power Supply

How To Repair SMPS || SMPS Repair Step By Step || Switch Mode Power Supply . because a smps circuit is electronic components based power converter, which takes line voltage, then converts it into dc voltage. afterwards these DC voltage are chopped in high frequency based pulse width modulation PWM based IC and the power mosfet, which are passed through a power transformer, after transformer, it will rectified into dc voltage. a feedback circuit is incorporated to maintain the voltage regulation. some circuits have a current limiting / current regulation circuit.
#howto #repair #smps
this video is DEDICATED TO MANSOUR MASHAQBEH Al-Zarqa Jordan منصور المشاقبہ۔
Download UC3842 SMPS circuit diagram bit.ly/3uc8wB0
bit.ly/3a3KukQ
bit.ly/3NwZqFA
BOM bit.ly/3OiSTjJ
in this tutorial i shared very easy & step by step practical troubleshooting / circuit tracing and fault finding techniques to find the faults in any switching mode power supply. i explained basics of smps working and understanding repair switching mode power supply. also i discussed smps basics. after watching this video you can capable to:-
how to repair smps (switch /switching mode power supply), either it is industrial power supply, laptop charger, adapter, computer atx power supply, server power supply, mobile charger, battery charger, inverter ac board, inverter of solar system, inverter welding machine, led / lcd tv power supply, UPS uninterruptible power supply, washing machine control board, sewing machine circuit board, power supply of dth / digital satellite receiver, switching mode regulator,
how to repair smps (switch / switching mode power supplies), very easy, step by step repair and practical troubleshooting & circuit tracing tutorial using smps circuit diagram & block diagram. i discussed how to test smps switching frequency, how PWM pulse width modulator work, what is filter and protection circuit, bridge rectifier circuit & how bridge rectifier circuit work. what is PWM pulse width modulator, how to test pwm signal. what is optocoupler or opto-isolator and what is its function in feedback circuit. what is voltage regulation and how it works in SMPS. switching mode power supply repair tutorial,
how to repair / fix switch mode power supply / supplies. dead laptop charger repairing,
electrical engineering, basic working of SMPS, basic working concept of SMPS switch / switching mode power supply, how switching mode power supply works, function of FET, MOSFET, BJT, IGBT or switching modules, how switching mode power supply works, most common faults in SMPS. smps output voltage fluctuation, SMPS is fluctuating output or output voltage unregulated , switch mode power supply have no output. smps input short circuit, fuse keeps blowing, smps startup circuit, smps switching frequency testing, rcd snubber circuit, secondary side, feedback circuit, TL431 adjustable reference, optocoupler, auxiliary voltage, vcc or bias voltage, current sense circuit, output fluctuation, voltage regulation. it is uc3842 / uc3843 / uc3844 / uc3845 current mode smps circuit. fuse keeps blowing. current sense in smps & short circuit protection, smps short circuit in output, SMPS dead or no output voltage or have low output voltage. smps ic have no switching frequency, smps no output voltage, how to troubleshoot PWM SMPS controller when there is no switching from MOSFET. if SMPS have a whistle sound or excessive noise or excessive heat, how to repair smps in cpu,
this video is translated in french, spanish, italian, telugu, hindi, bengali, portuguese, how to repair smps malayalam, tamil

[@Choober65]

Wa-Alaikum-Salaam. I am an Electronics Engineer of many years fault finding. One of my specialities is SMPS and this video is the best of its kind on the internet. Very comprehensive and informative. Thank you for imparting your knowledge to others in such an easy to understand format.

[@Majidtinfo]

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[@Brijesh8080]

I have a compact logic power Supply of AB. I am facing shutdown problem i.e. on/off problem. What should be the issue with it..

[@CinematicTouchProductions]

This is my first time seeing your video/channel and I have to tell you I am very glad I came across it. I have seen other channels on electronics repair but you stand out. You put the word "teach" in "teacher" you have the right formula for teaching, you are very easy to follow,understand, knowledgeable, you demonstrate very well and are not boring! You are a gift to us all and I'm sure I speak for all we are fortunate to have you dedicate your time and effort to have you do this for us. Thank you!

[@goutammukerjee6229]

I think really I am fortunate to get a technical teacher like You, how I convey my regards to You, God knows, really as per words right now I become capable to repair the SMPS, Sir one more request for PFC Power supply, if possible kindly upload a video of PFC Power supply, like this video , thanks a lot with regards

[@HaseebElectronics]

best regards and special thanks for your valuable comment it is my pleasure sure i will discuss PFC based power supply

[@nujgallo9706]

@@HaseebElectronics sir how to check uc3842 if it working or its bad.? Thank you

[@ghulamfarooq6963]

Wa-Alaikum-Salaam. Dear thank you for Very good informative video.

[@HaseebElectronics]

So nice of you

[@leonamil2567]

Thank you for sharing this educational video may ALLAH gives you more blessing.

[@HaseebElectronics]

So nice of you

[@andreiramos4362]

I am Latin but I understand English a little. Thank you for giving us time. God bless you

[@HaseebElectronics]

most welcome and thanks for appreciating my efforts you can watch my videos by turning CC on from your mobile and select auto translate as well

[@ComputerExpert1]

So much informative video thanks for sharing sir

[@HaseebElectronics]

thanks a lot best regards

[@TYGAMatt]

This is the best explanation of smps on the Internet. Thank you Sir

[@HaseebElectronics]

it is my pleasure thanks for your valuable comment

[@TYGAMatt]

@@HaseebElectronics It is thanks to your hard work and very clearly explained videos that I have managed to fix several smps units, so you have increased my knowledge AND saved me money :-) thanks!! Matt.

[@Zaikonkibahar]

Masha Allah. Great and Very Usefull Information Very Well Explained. Thanks For Sharing

[@HaseebElectronics]

thanks a lot dear sister

[@radio-ged4626]

Extremely thorough and accurate description and demonstration of a SMPS circuit. Very good to watch.

[@HaseebElectronics]

it is my pleasure i am thankful for your valuable comment

[@gregwoolley]

Fantastic! You are a great teacher, I enjoyed your video very much. Thank you!

[@danielugwa6517]

sir I don't know what to say you are awesome. may almighty chiukwuokikeabia the God of heaven bless nd bless nd bless nd bless you and your family. as you give to us freely that which we seek for freely. May heaven give to you that which you also seek for iseeeeeeeeeeeeeee

[@HaseebElectronics]

please accept my best regards ❣️ and special thanks for your valuable words ❤️

[@petsathome7091]

Masha’allaah soo informative very good 👍🏼 work 👍🏼👍🏼

[@HaseebElectronics]

thanks a lot best regards

[@sitaramasastry8617]

very good explanation . your practical aproch is good . . you are a good instructor

[@HaseebElectronics]

Thank you very much!

[@nasirzamanawan.3485]

Jazak Allah o khair sir,.Good explain..

[@HaseebElectronics]

best regards اگر ممنکن ہو اور ٓپ میری تمام ویڈٰوز اردو میں دیکھنا چاہیں تو میرا اردو چینل (haseeb eectronics urdu) دیکھ لیں وہاں میں اپنی تمام ویڈیوز اردو میں شیئر کرتا ہوں

[@mohamaddhaybi1617]

You are a great teacher sir.. I am very lucky and thankful that I have found and subscribed to your informative and wonderful channel. I really enjoy your explanation of how everything works together. I am entering every publication link shown during the video trying to return you the favour even if it is just a little. Hope everybody does so. You deserve the best❤

[@DrTRonik]

_Great_ ... _As always_ ... _Thanks for sharing_ ...

[@HaseebElectronics]

special thanks and best regards

[@augustojoa2496]

Thanks Haseeb. I am very grateful for your valuable instructions.

[@HaseebElectronics]

You are most welcome

[@actechtelugu3063]

Dear sir this is ultimate in smps What a wonderful explanation You are the greatest person in electronics field Thank you very much Sir

[@HaseebElectronics]

You are most welcome best regards and lovely thanks

[@gomezaloysius]

Hi Sir, I am not an electronic guy but I do open up all faulty devices, only to check for any blown fuse. Your videos are so detailed and inspiring. I was looking for a video to run a aircon blower fan without the controller board but accidentally came across your video. May god bless you for your great unselfish sharings!! You are super teacher!!

[@shamssham828]

❤️

[@valakatz3967]

Thank you for your excellent video. I have not seen a better video about SMP supplies than yours. Have a great day!

[@HaseebElectronics]

best regards and special thanks for your valuable comment

[@draganradakovic]

best explanation of SMPS operation I've seen so far. congratulations sir

[@HaseebElectronics]

thanks a lot it is my pleasure

[@rawjusticeman3128]

Now I have a better understanding of how to approach a SMPS fault logically. A big thank you to your video.

[@HaseebElectronics]

most welcome dear

[@weiaungweiaung]

ဆရာ မိုက်ခရိုကွန်ထရိုလာ အကြောင်လေလားချင်ပါတယ် ကျွန်ပ်ကို သင်ပေးပါလားဗျာ.

[@azlanikram9393]

very nice and thorough explaination

[@longmarch26]

Thank you very much for teaching us these things clearly. Learned a lot from this.

[@HaseebElectronics]

You're very welcome!

[@boybravo689]

Very good trouble shooting technique sir tnx for the video

[@HaseebElectronics]

it is my pleasure best regards

[@user-sk3bu2ny3x]

برنامه خوبی بود،و ازاینکه بزبان فارسی زیرنویس فعال شده بودبسیارجذابیت داشت لایک وسابسکرایب انجام شدو منتظر برنامه های خوب شما هستم،خسته نباشید

[@vijayakumarkumar9190]

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

[@HaseebElectronics]

best regards and lovely thanks Happy new Year

[@oznewton867]

I am loving the way you explain electronics. You have answered so many questions I have had for many years. Thank you so much for producing these videos..

[@HaseebElectronics]

You are so welcome!

[@democracyforall]

@@HaseebElectronics CAN YOU DO ONE VIDEO ON NXP UBA2012T chip how it works etc, mostly found in philips ballasts

[@HeroHero-vg2sd]

Good teacher. I wanna be good good electronic technician lik you.

[@HaseebElectronics]

Thanks and welcome wish you the best of luck my dear friend

[@ssvlogs7392]

Bahut hi acche aap technical teacher maloom hote hain very good

[@HaseebElectronics]

thanks a lot best regards

[@sudathponnamperuma8022]

Very very thanks your easy explain electronic tutorial.

[@godfreydesilva5222]

This is an excellent video with loads of Technics and details. Well done Sir.

[@HaseebElectronics]

best regards and special thanks

[@gitongakirigia6046]

Dear Engineer Haseeb, Allow me to refer you to the above tittle.Sincerely you are a blessing to many through your detailed video courses online. Let me confess that the far I have reached in electronics repair is attributed to you through the glory of God. I had real problems with smps, opto couplers, switching ics and you can bet now am well equpied through your tutorials. I am from Kenya , Meru county and named Gitonga kiogora. Receive my gratitude and may God bless you more .

[@HaseebElectronics]

best regards and special thanks for your valuable comment it is my pleasure that my efforts are beneficial for my viewers please accept my best regards and wishes

[@gitongakirigia6046]

Am grateful. Kind regards

[@gopalraovellanki9826]

Namaskaar Haseeb bhai 🙏 In this one hour video you have covered almost every probable fault in the SMPS circuit and how can we check and rectify the problem. This video is very very informative and useful for Technicians. Thank you very much 🙏

[@HaseebElectronics]

thanks a lot dear it is my pleasure

[@KhairilHamid-mt8qv]

Waalaikumussalam ya Akhi.. thanks for sharing.. need to listen a few times before attempting to repair my SMPS.. Problem: No 12Vdc output voltage.

[@Mathew_8275]

Very very informative sir thanks alot sir

[@HaseebElectronics]

best regards

[@kahlid-ataya]

النوع المفضل لدي من الفيديوهات المليئ بالتفاصيل 💯💯💯💯💯

[@HaseebElectronics]

أنا ممتن لتعليقك القيم وشكر خاص لدعمكم. بارك الله فيك أخي الكريم. كل عام وأنتم بخير

[@hadjnabil4811]

وعليكم السلام ورحمة الله وبركاته جزاك الله خير,god bless you and all your familly and your contry. have nice day Sir.

[@HaseebElectronics]

thanks a lot for your valuable words Allah bless you and your family

[@chinni1980]

Many more thanks About SMPS explanation sir very good classes.

[@HaseebElectronics]

You're most welcome

[@bharaths9479]

First ever channel to reveals the SMPS best. Thank you so much Sir. Thanks for your great effort and time.

[@HaseebElectronics]

Thanks and welcome

[@shrikantbhaibhosale]

Thanks for this video, You are great teacher,

[@HaseebElectronics]

You are welcome! best regards

[@shrikantbhaibhosale]

@@HaseebElectronics Dear, Just now i send msg on whtsup, pls rply

[@mriyan-wl2ce]

Sir Allah pak bless u many many happiness u r great & proud able man....

[@HaseebElectronics]

thansk a lot stay blessed

[@ikbalalraiksu1030]

MasyaAllah, really get perfect mentoring from, Allah bless you brother

[@Majidtinfo]

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[@farukrabbishoud1138]

Allahumma Barik Laq. Wish you are my teacher. Love from Bangladesh.

[@Shakrasyumcenter]

MashaAllah great sharing

[@HaseebElectronics]

thanks a lot best regards

[@Vidya1939]

Very nicely explained I am thankful

[@HaseebElectronics]

It's my pleasure

[@eduardomencias5191]

You explain so well sir.. I salute.. I learned a lot

[@foodflavors2021]

MASHALLAH very nice information

[@amjadhussain3399]

excellent explanation got much information that was unaware about

[@maythammohamed9125]

u are the best one in youtube

[@HaseebElectronics]

sepecial thaks best regards

[@hamzehkamrava9071]

سلام علیکم و رحمه الله و برکاته.. Hello ... Your training as a Muslim brother is a source of pride. I benefited from your training. Good luck bye . 👍🏼🤝🏽🤲🏼

[@HaseebElectronics]

و علیکم السلام thanks a lot dear brother

[@djbaklastech]

I like this video so much.. Much interesting

[@HaseebElectronics]

Many many thanks

[@MikeTheMan1961]

Very very informative 👌

[@HaseebElectronics]

best regards

[@JoseLopez-pq2zb]

WOW. VERY GOOOOOOD EXPLANATION . THANK YOU.

[@HaseebElectronics]

it is my pleasure

[@barryw.9419]

Many thanks for this excellent informative video, and sincerely instrumental in providing immense better understanding of the systematic breakdown for fault diagnosis! I greatly appreciate the video diagnostic presentation was exceptional from start to finish including the specifically identified test points and polarity, and the concise detail of the expected test result and in depth attributing fault factors or the secondary outcome by a specific fault. I myself was working on lawnmower 120VAC/24VDC charger no output @ primary transformer. On this charger JSC-1056A in lieu of UC3842 (by your application), this charger has has Texas Inst. 28600D controller on the Hot (primary) and dual LM258N Op Amps on the secondary. No surprise your presentation is near exact similarly bang on in layout. My fault specifically falls at open "T1 input and as you called it; the finding was "shorted diode" D1 , Resistor R11 @ tests high in circuit (spec..27ohm). Whereas resistor R3 tests "shorted" @ 46k ohms expecting spec. @ 420 M ohms (Q1) Mosfet SSS7N60B tests good in or out of circuit but.... I found; "what looks like" carbon diode identified on PCB as "RB1" in series with mosfet "drain" to T1 transformer unfortunately it does not have any visible markings and appears shorted along with indicators of overheat on PCB. Both diodes on T1, T3 primary "hot" thus I suspect controller is presumably dead though Input portion including Bridge AC/DC tests normal and all diodes test okay. Is schematic layout reference "RB" like a carbon scrubber resistor??? The problem with this board layout they utilize both glass, and standard diodes and also alternating smd or through hole diodes. The RB1 with no markings although it's carbon and look like diode; it has "O" resistance, no polarity indicator or markings thus it's guess it is only intended as scrubber but the focus I suppose should be diodes, resistors at T1, T3 since mosfet gate signal source signal appears correct @ 160v, likewise at Main Cap (-). again many thanks!

[@airmailman1971]

What a great instructor! Thank you for this video.

[@HaseebElectronics]

best regards and special thanks

[@abdulzaheed5272]

Wa aleikum salam varhmathulla...jazzakallaha kairan

[@HaseebElectronics]

best regards and special thanks

[@kiengweegheu8163]

I finally found my online teacher. very very detail explain. thanks teacher spending time on explaination. will keep watching your video.

[@HaseebElectronics]

You are welcome! i will suggest to watch video number 592 that is related to the same subject, you will find it valuable

[@nadiavillagefood8055]

Very nice vedio nice sharing 👍

[@HaseebElectronics]

thanks a lot

[@vloggerAbhaypathak1]

Great upload Very knowledgeable vdo

[@HaseebElectronics]

thanks a lot dear friend

[@jimz421]

Very useful information

[@HaseebElectronics]

So nice of you

[@manoranjansahoo1932]

Dear sir I am very grateful to you.i have an electronic Repair shop.l watch your video and learner a lot.Though I am not earning too much.but it gives me job satisfaction.so sir l would like to thank you again and request you to keep it up God bless u sir

[@HaseebElectronics]

You are most welcome

[@aminushehudanhassandanhass1792]

detailed and explicit, thank you and God bless you more.

[@HaseebElectronics]

Best regards 💕

[@AnthonyAnakapu-bm3ui]

SIR,Your Tutorial Videos on SMPS Repairs and Testing Faulty Areas with the Schematic Diagram Use is a very great help to me on my Electronics Study Course I am still studying to Master in Electronic Engineering Career...SIR Thankyou..Anthony Anakapu..Online Student on Electronics + Electronic Engineering Studies...

[@jecoblevi339]

This is perfect explanation of fault finding process!👏 👏

[@hemchandmoosun4467]

Very good explanations on schematic diagram like a pro 👍 You're too good SIR 👍

[@ravindranemade9205]

Really great u.teach me to finding fault inmy smps.thanks again .

[@HaseebElectronics]

Always welcome

[@MuhammadAdam-mn9qb]

Thank you brother Haseeb

[@HaseebElectronics]

You are most welcome

[@muhammadtamoor2596]

Useful and practical information.

[@HaseebElectronics]

thanks a lot

[@sccscc5914]

Thank you so much God Save And Bless you and your family

[@muhammadishtiaq24]

Excellent experience shared thanks for sharing this informative video

[@HaseebElectronics]

thanks a lot

[@Meraj-zr2ry]

You doing well. Make it simple. This switch mode power supply is a Pulse Width Modulation (PWM). The PC431 optocoupler is used as feedback to continually regulate the rail. R12 is a kick-in resistor to turn on the ic. C3,47uf/400v filter capacitor will rate high than the supply voltage when is fully charged, even if is out of the circuit. I am not sure why you Multiply it by 1.414? You use a pro-RMS meter so it should calculate it itself. EMI circuit is to comply with international standards. CE, US, Ca, Au/Nz, etc.

[@HaseebElectronics]

best regards for a valuable comment

[@Takismeteo]

Thanks a lot for your kindly offer of your knowledge. I do not think that it could be a better presentation. You helped me a lot to understand the circuit.

[@HaseebElectronics]

You are welcome!

[@dingsoq7302]

Thank you Sir for a very detailed analysis. Great to add knowledge on my interest in electronics.

[@HeathenGeek]

I must admit, when you said 'it's best to watch the whole video' my heart sank. But 55 minutes in and that was gripping af. An excellent vid sir, thank you for sharing your knowledge 😎

[@HaseebElectronics]

it is my pleasure that my efforts are considered valid. thanks for your valuable feedback

[@user-lj7jh7yo2t]

Very clear and comprehensive, you are good.

[@alexbinai2322]

Enjoysble and well explain

[@andreiramos4362]

Your are a good person. God bless you.

[@HaseebElectronics]

Best regards 💕

[@RajChacko]

The best step by step video of SMPS troubleshooting. Subscribed!!!

[@HaseebElectronics]

thanks a lot it is my pleasure

[@simpletrader5220]

Nice and informative video thanks for sharing 😊

[@HaseebElectronics]

it is my pleasure

[@humbertucho2724]

Excellent troubleshooting, many thanks

[@HaseebElectronics]

most welcome dear thanks for your vauable words

[@cagmito76]

Really pleasant and enjoyable tutorial not to mention very informative , thank you.

[@HaseebElectronics]

best regards and special thanks for your valuable feedback

[@aayesha6227]

thanks for sharing very informative video sir❤❤

[@HaseebElectronics]

Always welcome best regards

[@ranamanwarurdupoetry8990]

"Very nice sharing"

[@HaseebElectronics]

thanks a lot and best regards

[@elektronik.]

l learn electronic from your youtube video sir

[@afeefali5947]

شكرا جزيلاً لك و جزاك الله كل خير اخي الكريم و ارجو من الله ان يتقبل منك عملك و يجعله في ميزان حسناتك

[@HaseebElectronics]

اللہ یسلمک و یسعدک۔

[@sanjaypatil8026]

Very good explanation.

[@HaseebElectronics]

best regards and special thanks

[@ThermaLTake94]

Im so glad you are willing to gift us this knowledge,i like that you have not a script and sometimes in the video we may thing "why doesnt he analyze what he is saying right now and he is changing the subject".but every time there is a solid reason you are going to another direction on the discusion before we can understant what you are currently saying,greetings from GREECE keep up the good work

[@williel.morris4492]

The Best Teacher, in Electronics on You-Tube..!!

[@HaseebElectronics]

thanks a lot and best wishes

[@Hardeepsingh-re8xn]

great vedio I am glad to see it, very informative thnk u sir

[@HaseebElectronics]

So nice of you

[@abcabdi8523]

Thank You Very much Sir! The Lesson is very very helpful.

[@HaseebElectronics]

it is my pleasure

[@tinochoolun4397]

waoh great last year i have view your vdo for the first time and every day i looking for many thanks sir

[@HaseebElectronics]

You are most welcome

[@nazakathussain4871]

Excellent explanation

[@HaseebElectronics]

thanks a lot

[@SalimAhmad204682]

Thank you very much very well explained. وَعَلَيْكُمُ السَّلاَمُ وَرَحْمَةُ اللهِ وَبَرَكَاتُه

[@HaseebElectronics]

please accept my best regards for your valuable comment

[@mojikaygaming]

I’m your new subscriber, I learnt from your teaching. God bless you brother

[@HaseebElectronics]

most welcome and special thanks for your valuable comment

[@walidoulondon8107]

The best video on smps ever thanks bro ❤

[@nitantkatyal8202]

Mashallah great 👍 video sir... keep on the noble work sir

[@HaseebElectronics]

best regards and special thanks for your valuable comment

[@nitantkatyal8202]

@@HaseebElectronics RESPECTED SIR , KINDLY MAKE A DETAILED VIDEO ON TOP 265VG, IF POSSIBLE...LOVE AND BEST REGARDS...

[@philipscharles1333]

sir im learned lot from you sir the videos are very good and informative no one can teach like you this is the first time i understand electronics properly because of wonderful teacher like you sir thank you so much sir.philips from chennai india.

[@HaseebElectronics]

Thanks and welcome

[@Yorumcu63]

Great tricks Thank you for video