The best way to learn from this video is to get just pen, print out data sheet and take all notes and go along, pause rewind until you get it on the paper, take all notes, pause rewind again! And conforme that you know what every resistor or diode does in circuit and then you move to live PCB! When i start electronics i didn't quite understand what is "start up circuit for IC" and that cause me a lot of trouble. But Haseeb makes this grate videos explaining every step, so consider yourself lucky to have this kind of knowledge just served out! Thanks Haseeb.
@HaseebElectronics
Жыл бұрын
best regards and special thanks for your valuable comment
@transparentlab8318
10 ай бұрын
1741G,is it opamp?
@transparentlab8318
10 ай бұрын
@@HaseebElectronics1741G ic, is it op amp
@trone32
Жыл бұрын
You are the Guru when it comes to SMPS repair. I don’t think anyone comes close to your knowledge on YT
@HaseebElectronics
Жыл бұрын
no brother i am still learning thanks a lot for your valuable comment
@W1RMD
Жыл бұрын
Great video! So there's now NO need to ask you 10 times how to fix my tv! You've covered this subject better than anybody. If I can't figure SMPS's by now, I probably shouldn't be taking anything apart. Thank you for taking the time to take what once was a completely foreign circuit to me and making it understandable! Best regards!
@HaseebElectronics
Жыл бұрын
it is my pleasure. i am thankful for your valuable words please accept my best regards
@W1RMD
Жыл бұрын
@@HaseebElectronics I've been recovering from an eye injury. I had to take a little break in watching videos, but I'm on the mend. I'm greatfull for God's healing. I appreciate your kind words!
@HaseebElectronics
Жыл бұрын
you will recover soon take special care for yourself and stay away from blue screens specially mobile screen is a biggest enemy for our eyes wish you happy l, healthy life 💖 and fastest recovery
@W1RMD
Жыл бұрын
@@HaseebElectronics Thank you! I am recovering at a fast rate. I was grinding metal under my truck and the goggles weren't tight against my face. Aluminum oxide cutting wheels can be VERY dangerous! I got a full face shield I will wear in addition to goggles. Thanks for your prayers!
@abdulzaheed5272
Жыл бұрын
Wa aleikum salam varhmathulla...jazzk allaha kairan...good explanation bro
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@mohamedniyaz7530
Жыл бұрын
Haseeb you are the best i have come across in circuitry explanation Keep up your excellent work
@akierum
Жыл бұрын
Best video on smps troubleshooting i've ever seen
@HaseebElectronics
Жыл бұрын
best regards
@miadaali9628
3 ай бұрын
شكرا-- والف الف شكر لك --- وجازاك الله بالخير---دمت طيبا ومعطاء -بارك الله بك
@nirmanmulalic1824
Жыл бұрын
May Allah almighty bless you and and give you all the best in dunya as well as in ahirah for your helping people to understand these complex concepts of electronics, esselamu alaikum wa rahmetullahi wa berekatuhu.
@Jandersonmanhez
10 ай бұрын
Perfect explanation. I have learned so much with you. thanks so much.
@NorthElectronFix
7 ай бұрын
No university teach like this man .thanks
@susantaatha6468
Жыл бұрын
We are also following yous foot steps. Many many thanks for your motivation information.
@HaseebElectronics
Жыл бұрын
So nice of you. it is my pleasure. i try to share the easiest ways to troubleshoot the circuits, might be it may useful for someone
@kalross73
2 ай бұрын
Love your videos! Thank you so much for sharing the knowledge.
@HaseebElectronics
2 ай бұрын
You are so welcome!
@MarkPrince1317
Жыл бұрын
Very good and very informative Thank you very much for sharing Best regards from Philippines 🇵🇭
@HaseebElectronics
Жыл бұрын
best regards and special thanks dear brother
@francismannion7075
Жыл бұрын
Thank you sir for an excellent video. Every time I watch your lessons I learn something new.
@HaseebElectronics
Жыл бұрын
You are very welcome
@isahizhenfahm6576
Жыл бұрын
Thank you sir for your video lessons on SMPS your video series taught me everything I know about SMPS. Jazhakhum llah khairan.
@HaseebElectronics
Жыл бұрын
it is my pleasure
@weiaungweiaung
Жыл бұрын
စိတ်ဝင်စားဖို့ကောင်ပါတယ် 👍👍👍
@abidinakdag658
Жыл бұрын
As-Salamu Alaikum Sir. Really great explanation. I watched every moment of the presentation and listened to it over and over. Thanks to the information which you shared, I believe that I have the knowledge to easily repair and redesign an SMPS. Thank you very much for sharing your valuable knowledge with us. May Allah be with you...
@HaseebElectronics
Жыл бұрын
You are most welcome
@okboybye
Жыл бұрын
Very good explanation in depth of each components and complete operation. How we get output and why we do not get output if any problem in parts! Thank you for giving scientific level of knowledge.🙏🙏 Loves from IND.
@muhammadishtiaq24
Жыл бұрын
Excellent Weldon keep sharing
@HaseebElectronics
Жыл бұрын
best regards
@gauripartapshanker9197
Жыл бұрын
Thank u so much. Your all vedeos are informative and knowledgeable. Thank you so much.
@HaseebElectronics
Жыл бұрын
You are most welcome
@AbdulMomenZargar60
Жыл бұрын
Walikum Salaam Jee Have Aa Blessed Day
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@Dale-ih8uq
8 ай бұрын
I will never leave this channel , thx
@AnandAnand-gr2tp
Жыл бұрын
Your explanation is good i improve myself in your guidelines thanks
@HaseebElectronics
Жыл бұрын
it is my pleasure
@HarlavanisPanagiotis
Жыл бұрын
Excellent video dear friend, have a happy Thursday ☺️
@HaseebElectronics
Жыл бұрын
many many thanks have a happy weekend
@will_doherty
Жыл бұрын
Very good and very useful in-depth explanation - thank you.
@HaseebElectronics
Жыл бұрын
You are welcome!
@kaizen1071
Жыл бұрын
Emeğine sağlık kardeşim.Hayırlı günler dilerim.
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@nandakumar621
Жыл бұрын
you are a great master😊🙏🙏🌹👍i am proud. of u
@HaseebElectronics
Жыл бұрын
Many many thanks
@LousyPainter
Жыл бұрын
That was a very good video for quick troubleshooting ideas.
@HaseebElectronics
Жыл бұрын
it is my pleasure
@heinsoe8013
Жыл бұрын
Very good video.Thank u Mr Hasssan
@HaseebElectronics
Жыл бұрын
You are most welcome
@vijayakumarkumar9190
Жыл бұрын
Very good and very nice explained thanks for sharing this knowledge to us
@HaseebElectronics
Жыл бұрын
it is my pleasure
@b4ky
Жыл бұрын
Can you briefly explain the differences between those ICs that are in the thumbnail (3844,3845..) and UC3846? Thank you, I really appreciate your informative videos. Cheers from Croatia.
@باباابي-ش1ض
2 ай бұрын
More than wonderful explanation. I have a question, sir, regarding the blue ceramic capacitor that is next to the connected transformer, such as a photocoupler connection between the input and output area. What is its function? Please reply.👍👍👍🌹🌹🌹
@HaseebElectronics
2 ай бұрын
it is class Y capacitor, it removes all common mode noises caused by the switching in the transformer, rectification noises in secondary side, and all noises biue to load, it will pass that noises into primary side ground
@silvake
Жыл бұрын
One quick observation, which you should probably advise in this video: ALWAYS use an isolation transformer when you're using an oscilloscope for troubleshooting the PRIMARY of any SMPS!!! In fact, I guess you are already using one (not shown in this video), or maybe your oscilloscope is not "grounded", otherwise we should have seen some big sparks when you are connecting the GND of the oscilloscope to the negative HV on the PSU primary. 😲
@kaveag
Жыл бұрын
All correct, I had exactly the same question... He has to have some galvanic isolation, otherwise, it's a guaranteed short.
@user-nh7rg4sf2o
Жыл бұрын
السلام عليكم ورحمة الله وبركاته واضح جدا بان حضرتك تمتلك خبرة عالية في الالكترونيات وانا اضع اعجابي بهذا الفديو المفيد جدا حدثت لي حالة لشاحن لابتوب ASUS وهي بمجرد ان اربط الشاحن على اللابتوب يشحن اللابتوب ل3 ثوان ثم تتوقف عملية الشحن استبدلت الشاحن باخر مستعمل غمل الشحن وعمل اللابتوب جيدا اكون شاكرا للمساعدة دمت بخير
@temyraverdana6421
Жыл бұрын
A wonderful Video, excellent explanation! Thanks a lot
@HaseebElectronics
Жыл бұрын
it is my pleasure
@AbuLeena
Жыл бұрын
Wonderful channel , very informative , Well Done Bro.
@HaseebElectronics
Жыл бұрын
most welcome dear
@akpowerinverter6880
9 ай бұрын
PWM815YBN equivalent ic kaun sa lagega yah ic welding machine ke power supply mein istemal kiya
@ihsanwazir4611
Жыл бұрын
Thanks a lot sir for another informative video I am Ihsanwazir from north waziristan .I have requested u to make a video on account dc fan circuit but u did not made. now I am requesting to make a video on how to remove battery full command from ghotky battery charger plz make a video or reply about.Thanks
@ihsanwazir4611
Жыл бұрын
sir we do not have internet connection all the time but when we visit the city we got online from PTCL network so plz plz and plz reply.
@aanish2.094
Жыл бұрын
Hmaisha ki trha shandaar
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@eduardocastroisaac1630
7 ай бұрын
Excelente dominio del tema
@mirceacraciun4091
6 ай бұрын
Nice and very clear and educative video ! Not need to use a isolating transformer for use the oscilloscope to diagnose a SMPS?
@msbbadsha1456
Жыл бұрын
Very nice & informative video
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@Aualas
Жыл бұрын
Thank you so much to share your knowledge.
@HaseebElectronics
Жыл бұрын
it is my pleasure
@omeralid9271
Жыл бұрын
thank you in kurdistan
@HaseebElectronics
Жыл бұрын
Best regards 💝
@MajidKhan-br7uj
Жыл бұрын
Sir plz chopper transformer k bary main video bnao k wo kesy kam krta hy jo china tv main 17inch screen k sath lgta hy... Horizontal yoke ka load km krny . Is k alava hm kesy yoke load km kr sakty hain
@chotuusian4127
Жыл бұрын
Good work
@HaseebElectronics
Жыл бұрын
Thank you so much 😀
@jalal76
Жыл бұрын
Great job
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@CHUZA.FF257
10 ай бұрын
Sir Aoa.great learning video.I requested before for fault asolation of ac DC cieling fan circuit.plz emphasize
@gururajmmutalikdesai4886
Жыл бұрын
Nice video sir
@HaseebElectronics
Жыл бұрын
best regards
@rapidcarwash4611
8 ай бұрын
Most excellant tutorial !
@dilipthampi7853
Жыл бұрын
Thank you very much sir. Appreciate.
@HaseebElectronics
Жыл бұрын
it is my pleasure
@memorywarrior8752
Жыл бұрын
I know that I post this on all your videos, but you are a legend. Just wondering have you ever read the Switch Mode Power Supply Repair book that was released by Jestine Yong. Or what are your opinions on it?
@FishingNOutdoorFun
Жыл бұрын
wow very well explained
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@Versatiledani
Жыл бұрын
Good informative video
@HaseebElectronics
Жыл бұрын
best regards
@rabihnasr7228
Жыл бұрын
Woooow more then wonderful thank you
@HaseebElectronics
Жыл бұрын
IT IS MY PLEASURE
@mansirrabiu7412
Жыл бұрын
Thank You very much Sir 🙏
@HaseebElectronics
Жыл бұрын
best regards
@prasadpalo9344
Жыл бұрын
Good evening guruji i love you sar
@HaseebElectronics
Жыл бұрын
thanks a lot bhai
@talhabhaiunique3652
Жыл бұрын
Excellent
@HaseebElectronics
Жыл бұрын
Thank you so much 😀
@hendriagustian7082
Жыл бұрын
Thank's for the block spike voltage circuit diagram.
@loganayagan
Жыл бұрын
Good job.really clear explanation.can you pls make a video on troubleshooting 3s bms circuit.
@mobilered2776
Жыл бұрын
Hi sir, thanks for the video .since last time I was asking U to , how to find PWM ic part numbers, it is in SMD sot23-6L pakage. I did Google also using the print letters on components but still not get and perfect datasheet ... Nandri Vanakkam 🙏
@HaseebElectronics
Жыл бұрын
welcome dear. you didn't mentioned the SMD code. if you can share it, i can also try
@philipscharles1333
Жыл бұрын
Hasib sir please let me know what happens when smps transformer got shorted . I'm very curious about that sir
@HaseebElectronics
Жыл бұрын
if transformer short circuited of it is partially shorted, it will damage the mosfet
@yniwazai9877
Жыл бұрын
I have another safetytip for you. Many SMPS chips like the one you have in this video, can work at much lower voltages than the 220V/110V line voltage. Often - but not always unfortunately - 35V is already enough. You can find the necessary minimum input voltage in the datasheet for your chip. So buy yoursef a basic AC/AC transformer that can output 25V AC (or more) or an AC/DC adapter that can produce 35V DC (or more). Use that output as input for the SMPS under test. It can save you a lot of premature gray hairs.
@computer4136
Жыл бұрын
Thank you sir
@HaseebElectronics
Жыл бұрын
it is my pleasure
@Dc_tech386
9 ай бұрын
Hello sir I have a question what pwm ic can I use to design buck converter that the current can be adjusted without turning the voltage down,I can’t find a ic that I can latch comparator to control the current output
@turkialshehri5391
Жыл бұрын
Amazing
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@electronicrepairservice2020
Жыл бұрын
Big fan of all your PS vids and O scope vids. What would cause a PS to have 168v stable on main cap (should be 320ish) and no voltages on the full bridge rectifier? 🤔NTC is good. What did I miss? Board is for a ccfl TV.
@hadjnabil4811
Жыл бұрын
Thank you Sir😘
@HaseebElectronics
Жыл бұрын
Most welcome
@QARepair
11 ай бұрын
Very interesting 👍 and your English are very good
@HaseebElectronics
11 ай бұрын
best regards
@chanthyiet6728
Жыл бұрын
Good job
@reinforce2004
11 ай бұрын
Confusing, the resistance of the NTC increases when heat is applied ? This is actually the characteristic of PTC !
@HaseebElectronics
11 ай бұрын
In Negative temperature coefficient ntc resistance When temperature increases the resistance decreases As it responds in reverse
@tekniksyantv
Жыл бұрын
Is that ptc ? When u apply heat it increase resistance..
@mohitarora149
Жыл бұрын
Thanks for a great understanding for working of pwm ic can you plz make a video for pwm ic with getting vcc voltage fluctuating and not able to turn on the driver mosfet..... thanks in advance
@MadinaElectricals
Жыл бұрын
Salaam bhai
@MANINDERSINGH-bw4ms
Жыл бұрын
Excellent video sir please make video on led tv driver voltage and current control by changing resistance and make compatible to our need.secondly which multimeter is suitable for 75 to 100 mhz measuring frequency. Thanks
@michaeltina3866
Жыл бұрын
Good morning sir please please do you have any vidéo on carbon fiber heater. Especially the one with temperature control circuit. Thank you so much for your work
@ladbla1752
Жыл бұрын
Thanks for your great tutorial. But is it possible t o use a thermal camera to find short in SMPS too? Both in Hot and Cold part of SMPS? Thank you for your reply
@HaseebElectronics
Жыл бұрын
best regards yes thermal camera is also a very useful tool but it is expensive. but it is a great tool ad well
@ladbla1752
Жыл бұрын
@@HaseebElectronics Thank you for your reply. What is an advantage( if any ) of light bulb you use in repairs? I use an isolation transformer and not sure if it is still needed/good for me (to start using the light bulb too) during repairs
@HaseebElectronics
Жыл бұрын
the series lamp is much better, when we are repairing some circuit card. it covers most of the time the mistakes while repairing. some component failure in the repair process. it will not allow to make more damages in the circuit. using isolation transformer, it is an excellent practice and it is much safe but use of series lamp saves the circuit from more destruction
@ladbla1752
Жыл бұрын
@@HaseebElectronics Thank you for reply. And is it possible to use bulb lamp (to cover most mistakes as you explaned ) and an isolation transformer ( for safety) together ?
@HaseebElectronics
Жыл бұрын
please check video number 683 for more detailed answer
@electronicrepairservice2020
Жыл бұрын
Any chance you could do a video on a dual output power supply for both 12v & 24v, how they work? Currently troubleshooting one that has 24v but missing 12v, only has 1.2v, can't figure it out. Checked caps & regulator.
@HaseebElectronics
Жыл бұрын
it seems that the 12 volt section have short circuit check its rectifier and capacitors i hope you will detect the issue
@electronicrepairservice2020
Жыл бұрын
@@HaseebElectronics thank you. The first thing I did was to look at board under a thermal cam - no shorts detected. Then checked all 3 pin components & electro cap values. I came up empty. 😧 No schematics, this is turning into a rabbit hole.... but I will persevere. 🤯 I have a good board to compare it to luckily.
@alejandroperalta8479
5 ай бұрын
Hello, What fault could cause that the voltage at the capacitor that feed the pin 7 in the ic 3843 doesn't get higher than 8.47 volts
@sunilkarki5738
Жыл бұрын
As-salamu alaykum dear haseeb sir can you make some video series about EV chargers for 2 wheeler and 4 wheeler if possible. InshAllah.
@osisegregory
Жыл бұрын
The lamp is connected in series or parallel?
@HaseebElectronics
Жыл бұрын
it is in series to the line voltage
@osisegregory
Жыл бұрын
@@HaseebElectronics Oh wow! Thank you.
@erkanmaller9695
Жыл бұрын
👍
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@hichamtassi1753
Жыл бұрын
Hello, to share my experience with an 12v/220v inverter, the cold testing is good, when power is applied, it is short circuit. Drive signal at sg3525 is good, any idea where to look at ? thanks
@prashobthomaszzz7
11 ай бұрын
Hi, what is the fault, if VCC of IC 3843 is getting only 8 volts and IC in off state. Could you please advice?
@selimkoc4783
7 ай бұрын
Teşekkürler...
@bhavupatel2090
Жыл бұрын
Thank you sir for this informative video.. sir i am new in repair. I am working on atx smps(Lps450) with Utc7608d (str-a6151) and Hs8108 ic. Not getting standby vtg. 330v available at stb xmer primary coil1, on drain and source of utc7608. No vtg on secondary side. Checked all components on standby rail. Help me sir
@AlinoPerfecto
Жыл бұрын
Dear Hasseb, please help me: I have a switching power supply AC 230V to DC 12V, it is power supply for satellite reciver. The issue is that after thunderstorm the power supply not working and if I measure input voltage it is fluctuating if connetcted to 230V, instead of 230V I have between 70V to 140V. Could you please help me?
@juanjody
Жыл бұрын
Thank you. Please enable subtitle.
@HaseebElectronics
Жыл бұрын
best regards subtitles will available tomorrow morning
@jalal76
Жыл бұрын
Hi Haseeb I need your help to find two smd diodes datasheet. The first one 23m03 The other is 6bg04am. The two diodes were shorted in pcb of hard disk 4 tera.
@TheJavaSync
Жыл бұрын
Sir, I repaired some smps (laptop charger) when first time it start - it reach 26v then slowly decrease until 19,5v (it need @30 - 50 seconds) & then it in stable voltage, how can I solve this issue? I found this kind issue 2x in my experiences.
@aldrinpagunuran8688
Жыл бұрын
The viper 22 in my induction cooker is heating up..i already change the big capacitor and resistors on its negative ..also all clamp diodes and all capacitor sorrounds the viper 22A.i change all. still heating up ..whats worst was the LED on buttons suddenly gone and fan blower also stops now.. but my fuse didn't explode..help me guru..what problem viper22A heats so bad led button a blower stops now
@HaseebElectronics
Жыл бұрын
check 18v zener near viper ic check 7805 regulator or other related parts for short circuit check both transistors for igbt gate drive (remove, and power on without transistors and check the condition without transistors) if it is good then check again by installing transistors
@aldrinpagunuran8688
Жыл бұрын
Okay thanks for the advice..the 7805 regulator .I already change it..but the zener diode near viper pins..I don't know the value of it that's why I didn't change it.since u said it was 18v.. I'm gonna look 18v zener..plus the two npn smd transistor near pins of igbt..Hy3d smd transistor I replace it with smd MMBT2222A 1P.. the LED buttons lights blinks..then gone it didn't lights anymore..fan also gone..after I put the SMD 1p transistor
@aldrinpagunuran8688
Жыл бұрын
I didn't lights the LED buttons anymore..but the viper22A keeps on heating.....I'm gonna change the zener diode near the pin of viper like u said.it was 18v right?.. induction cooker was asahi model IS-100..thanks
@pradyumnaguria8138
7 ай бұрын
Dear sir, request for Hindi video.
@HaseebElectronics
7 ай бұрын
Already uploaded on my Urdu channel Haseeb Electronics Urdu
@rajeshmukherjee4166
Жыл бұрын
Hallo sir,if possible please explain in eny video how -voltage generates like as -5 or -12 volt DC which is used in optical transmitter of catv
@acocrw5808
7 ай бұрын
perfect :)
@HaseebElectronics
7 ай бұрын
best regards
@sniper1989xp
5 ай бұрын
Hello friend can you explain how to work TOP255PN?
@SuperHEROdes
5 ай бұрын
Great tutorial, already like comment subscribe. I'm from Indonesia, I have a problem with the SMPS on the "ANJING" brand battery charger made in China using IC UC3842B on leg 7 (imput) with a voltage of 12 - 14 VDC, on leg 6 (output) there is a pulsating voltage of 0,5 - 1.5 VDC which goes to the MOSFET gate 7N65, on the drain leg the voltage is 210 vdc connected to the transformer leg, primary Elko voltage 320vdc, output 0 vdc, where do you think the problem is sir? I removed and checked several important components in the primary and secondary which had normal values... In this conditions, is the UC3842B still normal or is there a problem? Thank You
@tvbox8478
Жыл бұрын
👍 ✋
@HaseebElectronics
Жыл бұрын
best regards and special thanks
@nayanjagirdar8408
Жыл бұрын
👌👌👌👍
@HaseebElectronics
Жыл бұрын
best regards
@hamishussen1589
Жыл бұрын
Assalaam alaykum. Can u eplain how does home theatre amplifier work please
@mervinfernando1059
Жыл бұрын
How to correct my smps no 40 p102hg pwc1g doesn't give 34vdc as out put.
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