{298} Laptop Charger Repair (DEAD) No Power Solution | How to Repair Switch Mode Power Supply SMPS

in this video i demonstrated #Laptop #Charger #repair - (DEAD) No Power Solution | How to Repair Switch Mode Power Supply SMPS, i explained in urdu hindi language. this laptop Dell laptop charger using UC3842 current mode smps controller ic, it had no power, when power was connected or plugged in, it was not powering ON.
when i checked the voltage on DC rail on bulk dc capacitor, these were 330VDC but there was no output. then i checked voltage on vcc capacitor there were no voltage. vcc voltage are the most important for function of any ic. so that was the reason that pwm controller ic us3842 was not taking start. (uc3842, uc3843, uc3844, us3845, ka3842,ka3843, ka3844, ka3845 ics have the same pinout in their datasheet). pin number 7 is vcc pin, it must have vcc voltage for 3842 ic, it must have 12 working vcc voltage. these vcc voltage were missing due to the reason that the startup resistor was burnt. it was not providing initial vdd or vcc voltage to the ic. i checked that the original resistor was 180K ohm. for test purpose i connected 310K Ohm. (we can use a higher value resistor, it will cause a slower start)
explained practical How to repair switch mode power supply SMPS very easy. i shared my easiest and perfect troubleshooting techniques practical troubleshooting. smps concept and troubleshooting repairing or understanding repair switching mode power supply basics and working principle. also i discussed smps basics. after watching this video you can capable to:-
how to repair smps
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no output
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
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 mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
how to repair UPS uninterruptible power supply

[@DuascookingChannel]

Keep it up good work informative video 👌

[@MoowwaaiissMowais]

پیارے محترم بھائی جان جی آپ جس طرح عمدہ اور احسن طریقے سے گائیڈ کرتے ہیں اس طرح اور لوگ نہیں کر پاتے ہماری گزارش ہے کہ آپ ایمپائر پر بھی تفصیلی ویڈیو بنائیں اللّٰہ آپکی خیر میں ہماری بھی خیر ہو جی

[@tahirrehman1436]

CZcams par sab say top videos aapki hai

[@Rajudas11985]

Guruji main West Bengal se hu..
Aap ko mere taraf se pranam
Shikar kijiega..
SMPS Ka Video Dekha Toh Khush hogaya..
Sirji mera ek request hai output voltage kam ya jyada karne ke liye kaun si value ka resistance lagana chahie iske upar ek video banaaiye 🙏🙏🙏

[@adamsher4950]

Buhut Achi video hai magar buhut Door se banai hai koshish karay nazdeek se banai ,,thank you

[@sanobarshah786]

آپ بہت اچھا گائیڈ کرتے ھو اور بہت سی چیزیں جو پہلے کسی نے نہیں بتائیں آپ نے بتائیںgod bless you🎉

[@MudassarHussain-hs6sf]

ماشاءاللہ بھائی اللہ آپ کو لمبی عمر دے آپ کے سمجھانے کا طریقہ بہت عمدہ ہے اس سے ایک عام آدمی بھی کافی علم حاصل کر لیتا ہے اور مجھے بہت کچھ سیکھنے کو ملتا ہے

[@haseebelectronicsurdu]

الحمد للہ ۔ یہ اللہ کا شکر ہے

[@a.k.qelectronic6282]

السلام علیکم سر ماشاء اللہ بہت اچھا آپ ماشااللہ سر آپ کی ویڈیو جو ہے بہت اچھا ہے اور بھی ایسا ویڈیو بنائیں تاکہ ہمارے ہمیں سمجھنے میں آسانی ہو

[@haseebelectronicsurdu]

جی ان شاءاللہ میری تو کوشش ہے۔ اپنی دعاوں میں یاد رکھیں

[@Mirasadpirkani5355]

MashaAllah Usatd ji bhot Kuch sikne ko mela

[@irfanshafiqueelctronics5257]

ماشاءاللہ سر بہت زبردست آپ سمجھاتے گریٹ انفارمیشن آپ کی ہر ویڈیو ماشاءاللہ سب سے بہترین ہوتی ہے ماشاء اللہ

[@haseebelectronicsurdu]

الحمد للہ
اللہ کا شکر ہے

[@ajaykumar-sp5sl]

aap bahut acche se samjhate hain. thank you.

[@mohammadsarwar3933]

a o a , apky samjahne ka triqa mojy bohat hi acha lgta hai, v nice,apki video dekhny se pehly hi like kar deta hon, allah apki umar draz farmayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy M. Sarwar

[@haseebelectronicsurdu]

best regards and special thanks

[@mdtarikulislamrion9389]

You are the best teacher i have ever seen. May Allah give you Jannatul firdaus.

[@haseebelectronicsurdu]

Jazaak Allah khair dear brother

[@mdtarikulislamrion9389]

Sir i have a request to you. Please make some videos on Inductor value calculation.
How can we understand, how much inductance do we need in a circuit ? I mean how to calculate the value of an INDUCTOR for a particular circuit.
Suppose, we need 100mH inductor. Then how can we make it at home ? how much truns and what types of core do we need ?
When we disconnect power supply from an inductor, it gives a big voltage spike. Maybe it called "Back Emf". How to calculate this back emf voltage ?
Sir please make some videos on INDUCTOR VALUE CALCULATION.
I HAVE LEARNED A LOT FROM YOU. THANK YOU SO MUCH.

[@vijayakarekar]

Thanks sir ji...aapse bahoot sikhneko Mila hai....

[@afzalhusain461]

Haseeb bhaai assalamo alaikum
Aap bahut achha samjhate hai, allah aapko khub tarakki aur sehat de

[@haseebelectronicsurdu]

wa alaikum salaam
thanks a lot

[@lifeboy6969]

بہت خوب ماشاءاللہ، نہایت سلیقے سے کام کیا آپ نے۔

[@haseebelectronicsurdu]

Allah aap ko salaamat rakhey aameen

[@lalithprasanna6214]

Trouble shooting and repair tips and explain skill is excellent .dear sir most people like to see your video depend on your good experience .good luck i am from sri lanka

[@lnyadav8507]

Very nice way of teaching.I salute you dear.

[@madangupta1370]

Thank you sir aapke jaisa video CZcams par nahi milta. Sir aapke dwara dikhaya gaya circuit Digram kaise download kare fursat mile to video banayege Dhanydad.

[@haqnawaz6189]

Very good teaching experience and I am currently working on the project and thank you for the information

[@shamoolkhanhorrorchannel5712]

Bht achay se samjhaya thanks

[@usmanawan9378]

Thank you soo much sir Allah ap ko khush rakha

[@salimjaved7239]

بہترین۔۔۔جزاک اللّہ ہو خیرّ

[@haseebelectronicsurdu]

اللہ سلامت رکھے آپ کو

[@MalikLillah72]

Wow Beautiful Sharing informative video

[@bashirgulam]

Masha Allah, Allah Aapko jazai khair ata farmaye bohot khoob information dete ho aap bohot sare sawal aapke video dekhne se solve ho jate hai Shukriya is Knowledge ko hum sab ke saath share karne ke liye Love from India jazak allah

[@haseebelectronicsurdu]

Aameen
Jazaak Allah khair
ye merey leiy khushi ki baat he

[@fatimaKitchen12]

Aslam u elikum bhai mashaAllah great video

[@chuengueyhwang8558]

Excellent work.love to watch your videos thank you for sharing. Have a great week. A new friend

[@adnankhattak6]

Assalamualaikum brother.. your videos are very informative.. the way you explain the theory before repair is very excellent way because in this way we get the complete understanding and issues are easily understandable. Keep doing this good job. Please prepare a complete video on the laptop charger with voltages or signals at each step

[@rashminaik6039]

Ek behetarin video...

[@sureshpatil5406]

Special thanks for important knowledge. 🙏🙏

[@haseebelectronicsurdu]

best regards and lovely thanks

[@sarwatsiddiqui]

thanks it is informative like your other videos i watched and i subscribed your channel

[@haseebelectronicsurdu]

Thanks and welcome
it id my pleasure

[@saa225]

Sir Salam, I have exactly same type of adopter from an Inkjet Printer, it output should be 12vdc, instead it is 0, perhaps it has similar fault in it. Sir this info doesnt interest anyone, but viewing your videos regular, I get dedicated intelligent work ready made to every one, andebele on top a descriotion of next level that anyone might looking for. My salute Mr. Ashraf, you are awesome person.
syed Arif Akhter, Canada

[@Dr.QaisarAbbas99]

Nice job dear brother 👍 Stay blessed

[@sajidmunir864]

Excellent, beautifully explained, thank you very much

[@haseebelectronicsurdu]

You are welcome!

[@DeshiRanna]

Assalamu Alaikum. Maa Sha Allah, very useful video. Thanks for sharing.

[@BricoolinoSenyor]

بارك الله فيك اخي الغالي👍👍👍

[@haseebelectronicsurdu]

thanks a lot dear brother

[@shafiqulislam6451]

Sir so many many thanks very information and useful video.

[@haseebelectronicsurdu]

it is my pleasure

[@AKCOMPUTERS]

SUPER EXPLAIN SIR JI ......

[@voiceofimranasupportid9288]

Suepeb Sahring
Zabrdast amazing

[@haseebelectronicsurdu]

thanks a lot dear sister

[@PROJEKSERVISHP]

Always be enthusiastic and healthy brother, good luck 🙏🇮🇩

[@aijazurrehman2478]

very good information god bless u

[@rajbirsingh5835]

Bahut hi achha .

[@karunakarshetty51066]

Excellent knowledge sharing

[@hassantahirfoods217]

biiiig like
supper sharing bro very informative
stay connected

[@haseebelectronicsurdu]

Many many thanks

[@vcrvhsyoutuber]

Very good information sir ji thanks

[@wirsa]

Masha Allah
So nice beautifuu sharing

[@hafizinamurrehman4265]

Thanks I have earned a lot of knowledge from your video and I am able to repair power supplies.

[@haseebelectronicsurdu]

You are welcome

[@vlogsbykhadija]

Informative video 🙋💗

[@surendrasinghdhanjal5835]

Excellent diagnostic.

[@haseebelectronicsurdu]

Many many thanks

[@abassin555]

ماشاءاللہ ماشاءاللہ ماشاءاللہ

[@haseebelectronicsurdu]

جزاك اللهُ خيراً

[@sandeepmane2983]

Very nice information video 📹 👌
Amazing experience you have,,, Seriously 🙏

[@haseebelectronicsurdu]

it is my pleasure
i am thankful for your valuable comment

[@nrusinghnathpanda5125]

Sir app ka video sa bahut sikhta hun

[@haseebelectronicsurdu]

ye to merey liey khushi ki baat he bhai ji

[@FaisalMir_home]

Good work, logical approach, Thanks for sharing.

[@haseebelectronicsurdu]

You're welcome

[@devanandsawant3549]

Very good information sir

[@user-fz1gf2up8z]

Mashallah ap bohat ache hy

[@CookingKhabir]

Big like amazing

[@firasatali0999]

Very well explained

[@sanasmenu2113]

Very Informative video 👍

[@misbahlifestyle5155]

Informative video 👍

[@kitchentoolss]

Really enjoy the vlog. 💞💕💞

[@haseebelectronicsurdu]

thanks a lot
stay blessed

[@tariqbutt8724]

MashaAllah Great teaching style Sir .and informative videos in your channel,awesome practical approach .plz continue and stay blessed.

[@haseebelectronicsurdu]

boht shukriya piaarey bhai
Allah aap ko salaamat rakhey aameen

[@tariqbutt8724]

@@haseebelectronicsurdu JazaakAllah ...Allah app ko khush rkhe .....Aameen

[@sanjeevkumargupta6551]

Very valuable information.

[@haseebelectronicsurdu]

it is my pleasure

[@peopletv9079]

Good job nice work.

[@ahmedmadkour]

Nice work my brother 😍 give you nice 👍

[@haseebelectronicsurdu]

thanks a lot dear brother

[@syedmehmoodhussain9892]

Salam o alekum Masha Allah very nice explain Aap ki vedio sae hamari knowledge main bohot izafa ho raha hai please iss taleemi program ko continue rakhe ga thanks Allah Kareem khair o berkat atta fermae aur kamyabian atta fermae Ameen. Single phase 5 KVA generator k roter Flux per load dalnay sae ziada speed main Chang na ho iss ko capacitors sae kesae control kia ja sakta hai please guide me.

[@haseebelectronicsurdu]

i am thankful for your valuable words.
unluckily i don't have practical experience in generators and power management
but i will try my best to ask for solution

[@saa225]

Mr Mehmood. Pl look into voltqge in exciter module or exciter voltage system, exciter voltage must be stable and must not show even minor fluctuation in no load condition. Or if u have replaced any of component, it must not be used one, and should be from industrial grade manufacturer. Commercial grades must be avoided. Thanks

[@sushilchoudhary5749]

Thanks for informative video.

[@haseebelectronicsurdu]

most welcome

[@DarsKitchen]

Very helpful!👌🏼

[@user-el5dt9iy9d]

thanks bhai jaan

[@muhammadwazir3350]

Sir boht malumati video ha ap k channel se hme boht faida hota ha Allah ap ko salamat rakhe ammin.
Sir aik laptop ka charger ha jis ka out put voltage meter per check krai to bilkul ttheek mile hn load lagane se ya laptop conect krne se voltage drop hotain hn out put ma koi component khrab nehi ha kia fault hosakta ha sir.

[@asadraza-ci5gt]

Good work thanks

[@rahulpatelgujratahmedabad3497]

Good tiching karte hai 👌👍👌👌👍👍👌👌👌👍👌

[@haseebelectronicsurdu]

thanks a lot dear

[@vijayakumarkumar9190]

Very good and useful information sir thanks for sharing this

[@haseebelectronicsurdu]

it is my pleasure

[@asmafoodvlogs9954]

Waooooo great shiring 👍🌹

[@arshadgul88]

Thanks Bhai information dene ke lye

[@haseebelectronicsurdu]

best regards and special thanks

[@arshadgul88]

@@haseebelectronicsurdu Bhai ntc 10 ohm heat hokar zero par aa Jane par aage current bhejna rok deti he lekin
PTC 10 ohm se value bada Kar Kahan pahuchti he or kis condition me kaam Karna rok deti he plz bataye bhai

[@pankajwasnik8632]

bahot Bahot badiya

[@haseebelectronicsurdu]

it is my pleasure

[@user-pq5tz5pn4g]

السلام عليكم بالتوفيق اخي الله يوفقك يارب

[@mmohaibkht9785]

Aoa sir ap jo bhi diagram dekhate hain kindly us ko just for 5 second still rakha kren take diagram ka screenshot lene me asani ho or diagram bhi hamare pass save ho jae thanks

[@zulfiqarhaider6702]

Thank you sir good knowledge

[@haseebelectronicsurdu]

thanks a lot

[@sobisobikitchen]

good information ji

[@ahsanhaseeb7202]

Great work sir.

[@haseebelectronicsurdu]

best regards

[@irfan-4]

excellent 👍

[@abhishekpruthi2982]

Beautiful information ..

[@haseebelectronicsurdu]

best regards and special thanks

[@asheraziz9121]

Great job

[@gurpaldandiwaldandiwal1845]

Great info.

[@The.warrior.]

Brilliant work

[@haseebelectronicsurdu]

best regards

[@pramodpandey121]

Sir thankUuuuuuuii......

[@haseebelectronicsurdu]

thanks a lot

[@pravinpadhiyar2]

Very nice video sir 👍👏👌

[@haseebelectronicsurdu]

Thanks and welcome

[@zakiausa]

Salam brother how are you doing great job 👏 🇺🇸

[@haseebelectronicsurdu]

بہت شکریہ پیاری بہن

[@shefqetkaralliu6816]

Ottimo video di informazione. Grazie

[@haseebelectronicsurdu]

best regards

[@ARJRaj-en6qm]

Good information sir.

[@haseebelectronicsurdu]

i am thankful Ji

[@sanjaypatil8026]

Nice information

[@naf4494]

Sir nice work , agar output cable connector iska earth feel karwa raha ho ,iss per koi video agar ho sakey, thanks

[@sikandarlal6003]

Nice work sir

[@haseebelectronicsurdu]

thanks bhai

[@abdullahhanan5807]

Ma Sha Allah ♥️♥️♥️💯👍🌹

[@haseebelectronicsurdu]

Allah aap ko salaamat rakhey aameen

[@furqan97325]

Well explained. Tks. How we can check IC.

[@Ade_Official-d4e]

Thanks New friend 👍🔔

[@hunterhunt226]

Great explation

[@haseebelectronicsurdu]

best regards

[@shirleybato7253]

awesome content

[@rajurawat5]

Sir ji 🙏 nice video 👍

[@haseebelectronicsurdu]

best regards and special thanks

[@srinivaschouke7661]

Thanks. Sir