{521} How to Repair Laptop Charger, No Power Solution

[@rydjaradat]

Thank you for this great explanation , I have a very similar PSU to the one you repaired that had the same resistor blown , I repaired it before watching your video BUT you gave me great insight for things to look for in faulty PSU units.

[@HaseebElectronics]

You are welcome yes dear i try my best to explain fault conditions and their discovering process

[@directsystems2225]

@@HaseebElectronics sir do a video about how to clean solder bits. to hold more solder on tips. I got some hakko tips after few days it's not sticking solder led.

[@mohammad45h]

تشکر سپاس وهزاران لایک بسیار عالی تشریح تحلیل تجزیه وتوضیح بخشها علمی وعملی نکته بنکته ..ومرحله به مرحله ...ممنونم جناب مهندس محترم ممنونم👌👌👌👌🙏🙏🙏🙏🙏🌷🌷🌷🌷🌷❤❤❤❤❤😘😘😘

[@kn9828]

Very good and clear diagnosis. Obviously you have a great understanding of digital and analog circuits. Even as an electronic engineer I learned from you. Subscribed 👍

[@HaseebElectronics]

best regards and special thanks for your valuable comment

[@rmjnm]

Sir i've been come across some of smps recently and was greatly frustrated to find that the control chip or pwm ic was damaged due to heavy short circuit. Please do some videos on how a pwm gets damaged . what are the good design practices to prevent such kind of issues. Because once the pwm gets damaged it becomes very tough to find a new one in the market and we've to leav the whole power supply.

[@anandkumarofficial344]

Power supply ke mamle me aaap ka koi jod ni sir ji bahot acha samjhaya aapne aab hum koi power suply aram se repair kar sakte hai

[@HaseebElectronics]

wow it is really very valuable feedback for my efforts

[@marka1986]

That startup vcc resistor is one of the first things to check in a dormant switching supply. Some resistors don't do well with a high voltage or large pulses across it. No overload, just quietly drift open.

[@janasmeal7916]

ma shaa Allah another superb repair work tutorial

[@HaseebElectronics]

Many many thanks

[@selimreza4477]

Sir thank you very much I am Bangladesh se

[@iffee100]

Nice tutorial. You explained everything about the circuit working very clearly. Kindly while recording give clear view pause at schematic for 2 to 3 seconds so that we can capture the schematic. Thanks

[@acelectronicsfj5128]

ماشاء اللہ اللہ پاک آپ کو کامیاب کرے اور سلامت رکھے آمین زبردست وڈیو

[@HaseebElectronics]

آپ چاہیں تو میرا اردو چینل haseeb electronics urdu دیکھ سکتے ہیں وہاں میں ساری ویڈیوز اردو میں اپلوڈ کیا کرتا ہوں

[@lifeofapillion8006]

Thanks for the video.. In this video, in the sample circuit please explain the snubber circuit. Usually we use RCD for snubber in parallel to primary winding, but in the sample circuit it is not there

[@HaseebElectronics]

sure i will explain it. in this technique the snubber is used in parallel to the mosfet. i will try my best to explain it as soon as possible

[@hadibq]

Thanks Hasseeb. I got my answer for how you discharged the capacitor using the PTC :) Qst please: What would cause a resistor to go open mostly?

[@hichamtassi1753]

Salam Aleikum Ssi Haseeb. Thanks for lesson with interesting check points. Can you explain what kind of information sends the optocoupler toi the ic. Thanks.

[@HaseebElectronics]

wa alaikum salaam dear brother sure i will try my best to explain it in detail

[@sarockpashotan]

Hi mr dear Hasseb .one queation and please answer Do you have a HP laptop schematic diagram? If tou have please just show me for a while in your next video! i need it to study that. Thanks a lot.

[@tanveerjan9954]

Hello. Can you please tell me the price of this Multimeter and where to buy it? Also tell me does this give accurate reading?

[@HaseebElectronics]

please check video number 470, that is practical review of this multimeter kzbin.info/www/bejne/fqCyg2VsqZlokNU

[@slotmachines756]

Do resistors have polarity also? Kindly help me sir.I usually watch all your videos til end

[@HaseebElectronics]

good evening no resistor don't have any polarity as it is passive component, and its resistance depends on the material specifications, so it can be connected in any direction

[@slotmachines756]

@@HaseebElectronics thanks sir

[@ravindraadapa2952]

hi sir thank you for sharing such an inspirational video tutorial where we get that schematic diagrams which u explaining the theory part pl z share it sir

[@bissadali9077]

Assalamu alaikum sir I like to learn something new from your every video. May Allah grant you a good life Amen.

[@HaseebElectronics]

Many many thanks please accept my best regards

[@sublimeelectrons8699]

this video is what i have been looking for ever since. thank you so much sir for sharing your knowledge and experience for free. you are a great teacher.

[@HaseebElectronics]

You are most welcome

[@raoamarjeet5473]

Sir,i want 12 volt output from 20 volt Which resistor do i use?

[@kuchpanktiyajindagiki]

Again I am here to learn how to explain properly. Keep sharing dear brother

[@HaseebElectronics]

thanks a lot dear sister

[@mdazhardware]

Thanks for this awesome video which was very helpful, I got a Laptop charger from a client when I checked the output voltage it was 19V, but the laptop is not turning on, I tried my own charger the laptop is working, Sir what could be the problem? Is it not enough amps?? Could you please help me find out the real problem, thanks in advance.

[@HaseebElectronics]

best regards and special thanks in your case please check the output cable, specially the ID resistor wire (third wire) in branded chargers it is very important, if it fail so the output power control ic will not detect the laptop and will not regulate the voltage, so the laptop will not detect charger

[@mdazhardware]

@@HaseebElectronics Thanks for your reply and concerns. Hope you all the best

[@tokyogentleman]

nice job! i can understand now how to repair my macbook power supply. there is a certain hierarchy in electronics. capacitors and resistors have to support the operation of the IC and transistors. so the power supply really looks like a mix and match of many vendors products integrated to look like a single solution by the designer/oem.

[@HaseebElectronics]

best regards yes you are right there is a complete of chain of engineering behind a final product

[@mujtabaalikhan2425]

Asalam o Alaikum, Sir your content is great for understanding practical electronics here on KZbin. If possible, the I request you to please creat a video series on SMPS based UPS (Like Homage, Inverex etc) that available in every home. The true sense of repairing you present will help everyone to troubleshoot it. Thanks for your spirit to helping others.

[@marcialperal7155]

Thank you very informative troubleshooting. I did same procedure checking the Vcc of the chip is 9v but the Vref is only 1.3v is this a faulty chip?

[@rossi6329]

Hi Haseeb, great tutorial, and understandable. But could you do a video how to check each component (how to test/ what to look for) without applying AC power. For people who have faults with other components.

[@geraldfactor5781]

onother informative technical video, sir the voltage ref. of smps controller is always 5v? thank you.

[@HaseebElectronics]

thanks a lot i cannot understand our comment properly. smps controller is always 5 volt? please can you explain it for me

[@geraldfactor5781]

@@HaseebElectronics what i mean sir is the vref of smps controller ic is always 5 volts or it depends on the part number, thank you

[@HaseebElectronics]

VREF in most of the ICs are 5 volt or 5.1 volt. it is a 5 volt regulator inside the SMPS IC, it provides a regulated output voltage, which are used to create oscillation frequency. so that if we change the operating voltage, the IC will not change its switching frequency

[@geraldfactor5781]

@@HaseebElectronics tnx a lot sir keep safe always.

[@4EVERGR]

Dear Siir, thank you for another great video. When we have laptop charger with no stable output, what are the steps to diagnose the problem on primary and/or secondary side?

[@reeevlogsinqatar]

ماشاء اللہ آپکی محنت

[@HaseebElectronics]

Jazaak Allah khair

[@hafeezm8627]

AA, sir I am very impressed with your work and the way you teach. More over I have some ccps. Can you plz fix it. I can visit you.

[@HaseebElectronics]

best regards and special thanks for your message i am in Jordan now. so if you are in jordan you can contact me on my whatsapp [phone]

[@hafeezm8627]

@@HaseebElectronics thanks for replying. Sorry I thought you are in pakistan.

[@HaseebElectronics]

@@hafeezm8627 no this time i am in Jordan

[@HarlavanisPanagiotis]

Amazing video dear friend, happy Sunday!

[@HaseebElectronics]

Many thanks dear Have a Happy weekend stay blessed

[@achellali]

great explanation and follow up from the circuit diagram. you know what you are doing, thanks about the warning because of the 400 volts element

[@GebrekrstosBrhane]

Nice work am your follower continue.but i want to ask you how can i get such a complete digram as your handout.tell me the link the source

[@basheercee]

Assalamu alaikum, Dear Sir, I am very much thankful for your detailed teaching about the laptop charger repair. Last month I was listened your SMPS repair program. Everything was very informative. Even though I am a commerce graduate, I am interested in these electronic classes. I repaired very many things at my home, my own things, but the result was failure. I am not responsible to anyone for the loss, except me. After hearing your valuable and detailed classes, I have a confidence to repair very small electronic things. Very much thanks.. Expecting more classes, and will go through your previous posts. subscribed for more. Mohammed Basheer

[@askanyful]

Lovely video sir!!! Appreciate your efforts and its very educative and a honest video. Just wanted to ask about the bulk capacitor calculation you had explained in ur video. Can you please make a video about how to calculate two parallel bulk capacitors of 150uF 450v in a 250W smps? Thank you sir

[@Digital-Technology-World]

Good job and useful explanation, thank you عليكم السلام ورحمة الله وبركاته 🖐️❤

[@omaaka]

Good afternoon engineer, thanks for your easy to learn explanation on adapter problems, please help me out with this problem. I was trying to fix a DELL laptop charger with power ratings: input voltage= 240 ac, output voltage =19.5v DC, 90W, i cannot recall the current rating as at this time of writing, the problem was that the capacitor and the bridge rectifier got bad and i replace them, now it is outputting 19.5v but CANNOT charge the laptop battery nor show the charging light bar any more, please help me out so that i can fix it

[@ottosusenodelvitto3225]

assalamualaikum brother, i wonder what kind of bulb you use for this electrical protection, thank for reply

[@HaseebElectronics]

it is normal tungsten lamp (the old fashion clear incandescent lamp) 220V 60 Watt or 100 Watt

[@AfayKnowledge]

Mashalllah very Informative Videos by you !! Haseeb Bhai agr Laptop ki screen p kisi liquid drop k insert ho janay k bd ek straight line aa jaey screen p , tu kya wo repair ho skti hai ? If yes plz make a video on it if you have any knowledge about it ! Thanks !

[@HaseebElectronics]

laptop screen per agr koi bhi vertical ya horizental line aa jeey to us ko ziaada tar replace kia jaata he

[@mohammad45h]

ازخدای مهربان بهترینها را برایتان ارزومندم بسیار باشکوه وعالی لطفا ما در فراگیری هرانچه حرفه ای شدن الکترونیک یاری فرمایید نکته بنکته استاد مهندس بزرگوار ودلسوز...🙏🙏🙏👌👌❤❤

[@abdulwaaseihsultan7733]

You're an artist my brother, hats off ❤️❤️❤️❤️

[@HaseebElectronics]

best regards and special thanks

[@eltalibmohamed3321]

thanks brother Haseeb, nice video, please where can i get circuit diagram for any charger of circiut board

[@hassantahirfoods217]

biiiig like waooo amazing bro u doing great job Allah pak apko kamiyab kry ameen stay connected

[@HaseebElectronics]

aameen thanks dear hassan

[@guube15]

Mashallah you are a good teacher.

[@HaseebElectronics]

Many many thanks

[@kashifsultanentertainment8926]

MashaAllah G Brother App Bhoot Talented Hu 🌺

[@HaseebElectronics]

Jazaak Allah kahair bhai Ji

[@aayesha6227]

sir your videos are always very informative and your channel is very useful to learn ❤

[@HaseebElectronics]

thanks a lot

[@techinfotahir7912]

Sir, Wa alikomsalam. Very informatic vedio. Iiked to much.

[@HaseebElectronics]

Thanks and welcome

[@osamakosara]

Dear Sir, I had a rectifier name ARGUS , and unfortunately I haven't the schematic . when I plug it the. 1- The unit gives me an alarm OVP Trip 2- I tested the VCC on PWM uc1842 there are missed . 3- Also the LM7812 there is no Volts which have to supply the rely by 12v. 4- I checked all mosfet and diodes Schottky there is no shorts . 5- I removed the two optocouplers to test , When I plugged it there is volts suppression has blown immediately. can you please explain to me why it is blown? and what the reason for OVP.

[@HaseebElectronics]

thanks for your comment and time i have no idea about your circuit as you didn't mentioned the model number if possible, please send its pictures to my whatsapp [phone] or gmail id ashraf4ta4 so it will easy to rely some closer to your problem

[@munawarkhan4926]

MashahAllah sir. Great video. PlZ urdu may smja dya karay. Thanks🌹

[@HaseebElectronics]

thanks a lot bhai urdu mein meri sabhi videos mere urdu channel (haseeb electronics urdu) per available hein kzbin.info/door/LRRH_M_0oW1oLTuUOsDXdw

[@BingoPeshwari]

I have PA-9E Flextronics 240W charger recently (seller said it's from Alienware laptop, bought it secondhand from online). It's written 19.5V on the spec, but only 19.08V when measured with multimeter. Also, when it connected with wattmeter, when idle/not connected to laptop, it's fluctuating between 0-1.9W (btw, this is level 5 efficiency adaptor. AFAIK, it shouldn't be more than 0.5W when idling/not connected to load. Because I had 19.5V 230W Delta charger, and it's 0.2W when idle/not connected to load). Is it something wrong, or is it safe to use in the future?

[@master254tech]

nice tutorial.....okay lets say the switching IC is bad and assume that it is not available..is there any other way of repair

[@HaseebElectronics]

thanks a lot. great and very valuable question sure i will try my best in nearest upcoming sessions

[@mohamedunais6497]

sir I have seen many of your videos all are very easy explain thanks

[@HaseebElectronics]

Thanks and welcome

[@nadembourkaib4185]

شكرا جزيلا اخي الكريم حسيب على ما تقدمه وجعله الله في ميزان حسناتك انشاء الله.

[@pnoechie21]

Sir, where did you connected the series light bulb at the fuse side? Thanks

[@boniamar1661]

ماشاء الله طريقة الشرح ممتازة وبسيطةواصل

[@HaseebElectronics]

صباح الخير شكر خاص وأطيب التمنيات لتعليقك القيم. اللہ یسعدک و یسلمک

[@temyraverdana6421]

Thanks teacher, wonderful lesson

[@HaseebElectronics]

You are welcome!

[@arunkumar-bh2dp]

good explanation. i had question before in smps. is it possible to use tank circuit instead of use rcd snubber circuit.

[@HaseebElectronics]

RCD or RC snubber is used to remove ringing effect if tank circuit is added to flyback circuit. it will increase more chances to damage to the switching device in induction cooker, induction heater we need tank circuit, in that case it is valuable otherwise in smps the tank circuit is not used

[@vijayakumarkumar9190]

Can you explain tank circuit

[@HaseebElectronics]

sure I will try my best

[@rahmatullahpopal9347]

Asalamualikum can you please show a vedio with quite short circuit of laptop adapter thanks

[@rammohan5435]

Thank you very much sir very useful and nice video

[@HaseebElectronics]

best regards

[@briansomai4798]

very good tutorial is there any particular website where we can obtain the schematics?

[@HaseebElectronics]

we have to search for the service manuals and application notes. there are many websites just search using "part number datasheet pdf or service manual pdf"

[@narayanasamymohanram9856]

Hello there,just wanted to know that I have a dell laptop charger with the output of 19.5voltage which is what it’s showing however, when I plug the wire, it’s not charging onto my laptop. I have also bought a new charger and it’s charges but the old charger doesn’t charge up. I have bought 4 chargers as well but it’s also the same voltage for all for of them in the multi-meter. The needle pin of the charger is not damaged either. If there is a video for this, could you please send me the link to find out what the error is please?

[@aseeralshoq4818]

جزاك الله خيرا يا غالي جهودك مباركه بإذن الله تعالى

[@HaseebElectronics]

اللہ یسعدک و یسلمک یا اخی الکریم صباح الخیر

[@prangki]

Mr..Next will you discuss laptop battery pack circuit diagram..🙏🙏🙏🙏🙏

[@susantaatha6468]

Very good informative.

[@HaseebElectronics]

good morning thanks a lot

[@engineeringtechnologybd1336]

Dear Friend I am requesting to you to make a vide, How can identify or test Good or Bad any ic with multimeter

[@hugoegon8148]

Very good explained, thank you! Its strange that sample circuit uses 2x332 kOhm and this device 180kOhm only. I think the value is too small and therefore it burned out. Planned Obsolescence!

[@HaseebElectronics]

thanks a lot. in sample circuits they provide some basic circuts but any desisgnenr adjusts it for his requirements startup resistor basically provides a soft start period to build voltage at DC rail. so resistor 120k to 400K is normal for using with 220VAC line voltage

[@marka1986]

Those resistors usually don't burn, just drift open. Was common in TV repair, any resistors with a high voltage or large pulse spikes across it were suspects to check first.

[@AmmarH413]

Thank you very much . The best video on this topic on youtube

[@HaseebElectronics]

it is my pleasure

[@PatrickRibbsaeter]

Very nice explanation master... another new knowledge gained today thanks to you. masallah!

[@HaseebElectronics]

My pleasure best wishes and special thanks

[@792533396]

Excellent ,Thanks a lot sir, Keep it up

[@HaseebElectronics]

Most welcome

[@umairiqbal2493]

A. O. A sir kya haal hai allah apko sehat r kamyabi dy gud luck

[@HaseebElectronics]

Ji bhai Allah ka shukr he Jazaak Allah khair

[@giftiekamanga7411]

what may be the cause of shorting between the smps ic pins

[@HaseebElectronics]

i think the chip internal failure

[@ComputerExpert1]

MashAllah so much informative vide Thanks for sharing Sir

[@HaseebElectronics]

thanks a lot best regards

[@ChafikBENCHAMA]

Bonjour Merci pour votre explication Est ce que je peux avoir une copie du diagramme

[@Zaikonkibahar]

Masha Allah Very interesting sharing Please stay connected

[@HaseebElectronics]

best regards and special thanks

[@nasirabdulwahab6768]

Nice lesson

[@HaseebElectronics]

best regards

[@prkacro]

thanks for great video.. Greetings from Croatia !!

[@HaseebElectronics]

most welcome

[@AugustineAriola]

Hello Sir. Please Sir, How do I buy this laptop charger transformer. I have searched everywhere online with no success. Maybe, I don't really know the proper name for the transformer. I want to design the charger myself but my problem is getting this 19v ferrite core transformer. What is the appropriate name ? What is the label codes and all relevant infomation Sir? Thank you in anticipation

[@HaseebElectronics]

ferrite transformers are not commonly available in market. these can be requested from factory by providing accurate requirements of the circuit they can design. otherwise you can calculate and design your own transformer based on your circuit capabilities

[@AugustineAriola]

@@HaseebElectronics Thank you Sir for your prompt response. I tried downloading ExcellentIT software to aid me in my transformer design for free, unfortunately I couldn't get the English version for free. Please kindly provide for me a link where I can download complete ExcellentIT software English version for free.

[@gopalraovellanki9826]

Hi sir thank you very much for this video. Have a good day 🙏

[@HaseebElectronics]

best regards and special thanks

[@tanveerjan9954]

Hi. Can you tell me the price of this Aneng multimeter and where to buy it?

[@HaseebElectronics]

i purchased this Aneng Q1 multimeter in around 24USD please check video number 470, that is practical review of this multimeter kzbin.info/www/bejne/fqCyg2VsqZlokNU

[@UmekaDennis.L]

Was the lamp connected to the cct?

[@jalal76]

You are the best thanks

[@HaseebElectronics]

You're welcome!

[@ganeshsathe3619]

Hello sir Please make the video on Siemens make smps, used in the DCS system

[@englishrupe01]

Really great troubleshooting demo and explanation....thank you!

[@HaseebElectronics]

best regards and special thanks

[@vijayakumarkumar9190]

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

[@ahsamahi4385]

Really nice work, i liked the idea of measuring voltage on Mosfet which is higher than that across capacitor which indicates that switching is available and also indicated that primary of the transformer is good without shooting inside it, actually i diagnosed a bad secondary transformer (partially shorted) also it can happen in primary, thanks a lot to you , I really increased my experience from your videos, god bless you, barak allah feek, like and subscribe

[@HaseebElectronics]

wow. it is my pleasure it is really a valuable and encouraging comment thanks for writing best regards

[@abnews4897]

شكرا أخي الكريم و بارك الله فيك

[@HaseebElectronics]

most welcome

[@abnews4897]

@@HaseebElectronics Your explanation of SMPS's is very simple, clear understandable and useful. Well done , thank you, brother. From Algeria.

[@r.v.l6051]

Hi Haseeb , I have a psb from Denon receiver ,most of Denon receivers with same board get issue after a while , actually output voltage to HDMI board (5.2 V and Ground) is ok but relay doesn’t clicking to turns on the receiver! I couldn’t find the damaged part, can U help me?I don’t know how can I send u a picture of the board!!!

[@mohamedroomy1985]

Informative video. Thank you Sir Jee

[@HaseebElectronics]

Most welcome

[@cookingwithmirhatahir]

Zaberdast sharing dear👌🌹

[@HaseebElectronics]

thanks a lot

[@techinfotahir7912]

Jazaa kallah khair.

[@HaseebElectronics]

السلام عليكم ورحمة ٱلله وبركاته جزاك اللهُ خيراً

[@aasaan_islam]

Wonderful job brother

[@HaseebElectronics]

Thank you so much 😀

[@xanderpogi111]

Nice explanation thank you

[@HaseebElectronics]

You are welcome

[@mugenyirobert971]

Sir I want know whether you have video on how repair fuel station pump control boards

[@HaseebElectronics]

Good Morning No dear, i never experienced such product

[@musarratalam3825]

Masha Allah Nice tutorial Big like

[@HaseebElectronics]

Many many thanks dear sister

[@SatyajitShettyAffordaEnt]

Sir from where can I get the Sechmatic of dell charger 130 watt

[@maheshworld4933]

Sir Explain about 110v UPS Charger circuit board

[@sudheesht1388]

Very good class, Thanks

[@felixgomez3334]

Muy buenos dias desde españa como siempre muy bien expkicado por favor nos podria dejar los diagramas que usted usa en cada tutorial o dejarnos el enlace para descargarlo muchas gracias porque nos ayuada mucho

[@Eslam-vm8gw]

I have a charger that outputs 19.8 volts, but the ampere is 0.3, what is the problem?

[@thonghuynh4326]

Thank you, your sharing is very helpful.

[@PROJEKSERVISHP]

Bagus ilmu bermanfaat angkat saya jadi muridmu suhu

[@HaseebElectronics]

thanks a lot best regards