{577} TNY266PN SMPS Have No Output Voltage / Switch Mode Power Supply IC Not Switching, How to Fix

[@danstark462]

Sir you are a great help to us, who are interested in fixing and are keen to learn ways that your have mastered these mysterious components. God bless you.

[@kitchentoolss]

Mashallha very nice and useful tutorial. It is really very helpful too. Enjoying watching. 💞💞💞💞

[@AKCOMPUTERS]

nice explain every time .....la jawab sir ji.....

[@HaseebElectronics]

Thanks and welcome

[@damianestebanclares9301]

Gracias!! Un genio...me gustaria que doble sus videos al español. Ayudaria a muchos tecnicos latinoamericanos. Un gran abrazo desde argentina.

[@HaseebElectronics]

en primer lugar, estoy agradecido por su valioso mensaje. traduje este video en español. además, agregaré traducción en mis próximos videos y también traduciré las conferencias importantes existentes los mejores deseos y gracias especiales

[@HarlavanisPanagiotis]

Wonderful video dear friend, have a happy day!!!

[@beautyofpakistan4976]

بہت ہی قیمتی معلومات جزاک اللّہ خیر 💖💝🌹

[@HaseebElectronics]

Jazaak Allah khair

[@NareyHaidery]

Wsalam bhai mashallah nice sharing like dn stay connected my old friend 😊

[@HaseebElectronics]

best regards

[@alfonsoincorvaia2595]

As always a very informative video! Thank you for your time and effort!

[@marka1986]

Wouldn't hurt to check R2 and R3 as well, those 1 Meg resistors. Those have a tendency to drift open and that could stop it working too.

[@HaseebElectronics]

you are exactly right but these don't effect because these are 1M ohm and so large values resistors very very rarely damage, sometimes their resistance may differ slightly but it will remain in limit even if these resistor will open it will not effect because the En pin will float and the ic will fluctuate otherwise it have to start switching

[@feebyewok]

Terima kasih telah berbagi skema dan cara kerja switch power suply dengan benar semoga sehat sejahtra selalu

[@HaseebElectronics]

thanks a lot dear brother

[@ahmedmadkour]

Mashaa Alla brother 😊 give you super 👍 keep safe

[@Nomanfamilyvlog]

زبردست ویڈیو ہے بھائی🌹🌹👍

[@ssvlogs7392]

,👍 Zabardast very nice information my dear friend ❣️

[@faisal5370526]

Good information i like your video Sir 👍❤❤🌹🌹

[@HaseebElectronics]

Many many thanks dear brother

[@muhammadtasleem4728]

You always shearing good knowledge about electronics' thanks so much.

[@alimajnooni1049]

Hi. In this video at 5:30m you said voltage between drain and source should be around 5-15 volt. Can you explain how and why? Thank you

[@FixTronics]

Beautifully explained Thank you so much You have a new subscriber

[@hafsakhan580]

Very useful in the electronic knowledge 👌 thanks for sharing

[@KGFMALIK-f4z]

Good work 👍🌹 stay connected

[@HaseebElectronics]

best regards

[@عمر_الجكني_الجزائري]

بارك الله فيك أخي حسيب

[@pericacvijetinovic1810]

Hvala na savetima, mnogo mi to znači !

[@HaseebElectronics]

moje zadovoljstvo

[@manualspellcorrect9073]

Thank you very much for this knowledge and experience. This video speaks to the core problem with startup I am trying to understand with a treadmill PF906 PSU that employs a TOP244YN. The DS says: "When rectified DC high voltage is applied to the DRAIN pin during start-up, the MOSFET is initially off, and the CONTROL pin capacitor is charged through a switched high voltage current source connected internally between the DRAIN and CONTROL pins. When the CONTROL pin voltage VC reaches approximately 5.8 V, the control circuitry is activated and the soft-start begins. The soft-start circuit gradually increases the duty cycle of the MOSFET from zero to the maximum value over approximately 10 ms. If no external feedback/supply current is fed into the CONTROL pin by the end of the soft-start, the high voltage current source is turned off and the CONTROL pin will start discharging in response to the supply current drawn by the control circuitry." Is it correct to say, that to understand the startup process, we need to interpret the waveform diagram of the startup counter, and that the whole process takes place in a very short (

[@norbithehun]

Dear Haseeb, great job as always.🙂 Please make a video how to connect 2 SMPS 12V line in parallel for more current. I have some totally same SMPSs and I want to connect them in parallel. I think many people interested in how to do that, what they have to take care of... Many thanks in advance.

[@k3lanka]

Thank dear Very well Great ✊✊✊✊✊✊✊🔥

[@AbdulMomenZargar60]

Good Morning & Good Wishes Dear Brother Loved It # 88

[@HaseebElectronics]

Many many thanks Zargar bhai

[@muhammadtasleem4728]

You always shearing good information about electronic 'thanks

[@YoutubeBaruHamid]

Waalaikumussalam wr wb Good job brother 👍❤️

[@beautyofpakistan4976]

وعلیکم السلام ورحمتہ اللہ وبرکاتہ، ماشاءاللہ سبحان اللّہ الحمد للّٰہ رب العالمین، جزاکم اللّہ خیرا کثیرا 🌹🌻🌺🌸🌻🌺✨💛💖💖💝🌹

[@HaseebElectronics]

best regards

[@Blade0983]

You are The Best! Thank you!

[@HaseebElectronics]

thanks a lot

[@vijayakumarkumar9190]

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

[@HaseebElectronics]

it is my pleasure

[@rahulpatelgujratahmedabad3497]

Good tiching karte hai 👌👍👍👍👌👌👍

[@azerehtmayumifruitsplantsh264]

VeRY useful in the electronics knowledge 👍

[@TheSalatech]

Thank you very much for this great learning possibility.

[@HaseebElectronics]

You are welcome!

[@ajayisamuel6448]

Thank you for sharing useful knowledge sir

[@tauseefrizvi8514]

Assalam Alykum. Nice very infomated video sir plz urdu ma bhi yea video upload kardain. Shukriya.

[@garn6223]

Thank you very much sir 🙏🙏🙏

[@HaseebElectronics]

Most welcome

[@Dabangg-Elecronics]

Sir if Pwm ic burn or wo can not get part number of any pwm ic so if it is possible to replaced any pwm ic with tny family i also know about how we can get part no of ic,s because i watch your all video so my question is just for knowlege gain

[@fatimaKitchen12]

Great video mashaAllah

[@HaseebElectronics]

THANKS A LOT DEAR SISTER

[@petriruskela7472]

Very useful information and very well explained! Do you have a video for diagnosing str a6100 series circuit issues?

[@aboabdrahmanaziz8752]

فتح الله عليك و جزاكم الله خيرا

[@HaseebElectronics]

اللہ یسلمک و یسعدک و یبارک فی عمرک

[@pbelectronic9287]

Sir can we use a MOSFET after this pwm ic drive pin to get more power OR can a offline pwm ic run MOSFET by it's drive pin .

[@susantaatha6468]

Very good explain. Thank you sir.

[@muhammadishtiaq24]

Good explain thanks for sharing

[@HaseebElectronics]

best regards

[@nimaesmaeil9318]

Hi Professor. It was great. Please consider a circuit of miner power supplies such as the morche model with the ant shape engraved on it.

[@platinumsteel6458]

Sir you have the best explanation of SMPS on KZbin. I have a power supply for a surround system player.I have no voltage on output capacitors. Relay is not clicking. I changed all output capacitors with new ones.I have MIP2F20MSSCF Power Supply Control IC that is not switching. I have 5.6v VDD on Pin 1 . Drain pin 5 i have same voltage as DC which is 150 v. AC Voltage is 115v . Pin 4 VCC is 7.85v . Feedback pin 2 is 1v stable.Optocoupler voltage Fluctuating between 1v and 0v.Can you tell me what to check next?

[@MrApolindar]

Excelente explicación , gracias por compartir esta información

[@famousdesisupportid8092]

Khush raha bhai Ameen Ameen

[@HaseebElectronics]

Aameen Jazak Allah khair

[@chrysogonusndedigwe8539]

Hello sir, how do we know the main winding and the auxiliary winding and how do we know the starting of the coil of the fly-back transformer.

[@HaseebElectronics]

we can differentiate the windings but we cannot the starting edge of winding. it can be guessed but for authentication it must be disassembled

[@sarfarajsaifi326]

Haseeb bro i m saying to you many time plz share a videos on charger ev segment from zero to end how to designe on half brige toplogy and pfc based ev charger can you explain it please do it i m so very happy Once please

[@Watch__This_]

Great videos like always, can you make one how to test SMP with oscilloscope?

[@electroniquepassion]

Nice 👍👋

[@Siva-qp3cs]

Sir, very nice explanation 👍 but how can we test this ic pin by pin using multimeter

[@alimajnooni1049]

I thought there should be the same voltage at drain point and at bulk capacitor. Why are they different? Thank you so much my friend.

[@BricoolinoSenyor]

اللهم بارك وفقك الله

[@chrysogonusndedigwe8539]

all the smps you did have auxiliary winding. Does it mean they must all have auxiliary winding

[@HaseebElectronics]

some offline switchers don't have aux winding,

[@Whosewillwin]

Thanks for sharing this awesome video

[@HaseebElectronics]

best regards for your valuable comment

[@raoamarjeet5473]

Thank you so much Sir, I get a lot from you, Sir is there any alternative way to replace this ic I mean any module like ds0088? If any then please tell and how to use that Thank you again

[@mohamedaziz597]

I have an igbt module Dp35l600 and i did not get the date sheet and check it

[@thanikachalamottilingam6707]

I have LA-520 based powersupply. DC voltage of 330v is available in input. but no output. could you help me out. thanks

[@calligraphe0125]

Thank you so much dear brother

[@jalal76]

Great job👍

[@HaseebElectronics]

thanks a lot

[@rav9811]

Is it safe to operate a device after doing this fix ?

[@HaseebElectronics]

yes it have to work normally

[@rav9811]

I did this on IC OB3368AP and a 5A diode in circuit is getting extremely hot 🔥 🥵 any advice? I used a 27k on pin 18 to ground .

[@impactodelsurenterprise2440]

My switch gets very hot after a few seconds then it just shuts down itself. May i know what's the problem?

[@sureshsurya5975]

Brother my smps with uc3844 ic working fine giving 24v supply properly upto 30 or 40 seconds after turn on the power supply.after that tripping on over voltage.Again turn on the second time directly showing over voltage indication. Pls find the possible reason for that?

[@syedaleembasha7479]

Tny279pg and tny 279pn are same?

[@HaseebElectronics]

both numbers are same just tny279pn is pure matt tin (Pb Free) and TNY279PG is with Pb material (Lead)

[@syedaleembasha7479]

Thank you bhaiya

[@drdan4072]

Sir i have a faulty sony laptop charger. The control ic used is 810 8 pin ic. Pin 1 of ic is ground and pin 7 goes to the capacitor of soft start section. Both pin 1 and 7 shows short. When ic is remove from board neither the ic nor the board shows any short but when ic is put back it again showing short . What can be the fault.

[@rogerschelling5668]

Very good. Thanks again.

[@waqatwaqat7015]

Shahid Bhai aapse gujarish hai kya aisi बार-बार jalne per ghot ke charger ke bare mein mukmmal bataen aap bahut acchi tarah batate ho please hansi bhai

[@Ff-kh6tn]

Sir when i checked the smps with this ic i found varying voltage of 2 to 2.5 across the drain and source.What will be the problem

[@yuribiktop6595]

how can i increase the voltage output to 15v and maintain 3A. Input voltage will range from 24v-300v . What components should i replace?

[@withemanfatima9952]

Nice info Thanks for searing

[@johnmonk3381]

Can i replace this ic tny266pn with another higher rated ic from the same family, ie, tny278pn?

[@HaseebElectronics]

yes dear from the same family group, the higher number can be used, as within the same family group, the switching frequency and Jitter frequency will remain same. and it will work same

[@johnmonk3381]

Thanks for the wonderful video and reply!

[@HaseebElectronics]

most welcome

[@johnmonk3381]

@@HaseebElectronics May I ask your kind opinion again, Sir? I have a burnt ic and burnt diode in the snubber circuit as shown in the pictures. The diode probably failed first and the voltage spike during switching killed the ic. Pin 5 is completely blown off. Can you also suggest what else might need replacing based on your experience doing this repair? Or just replacing the ic and diode should be sufficient? Thank you again sir drive.google.com/file/d/1CzZCCSzaEVrU99JNrEyADvzXOZ05S_Ru/view?usp=drivesdk drive.google.com/file/d/1CxeYR6gPscCPHCq5m1I6TA8WVcRTU0xz/view?usp=drivesdk drive.google.com/file/d/1CjcqOr9vWuQoknbdZbGzmFDPQKQEqRwE/view?usp=drivesdk

[@sudheerkumar5966]

Very good sir

[@HaseebElectronics]

thanks a lot

[@ubaidshhd]

assalam alykum sir top265 ki frequncy kesy maloom ker sakte hain kya is ka b formula hy jesy uc3842 may hum check kerte hain

[@freemanmed5009]

Salamou alaykom ,Could you please advice for a toshiba laptop charger which giving 15v instead of 19v !!!!! ! thank u.

[@muralitharan25]

Hello sir, I am receiving quality engineer (electronics -smps and etc...) junior and I inspect just part number (on-part)discription only, so please help me how I need to test those components using millimeter or else.

[@FancyBangles]

MashAllah Bhai

[@HaseebElectronics]

thanks a lot bhai

[@KBTechbd]

Really excellent idea

[@DarsKitchen]

Super video

[@HaseebElectronics]

thanks a lot dear sister

[@SamuelGirma-fp6sm]

There are smps tha do not use octo copular and tp14 why are they manage their voltahe and how can i control them

[@parvaizlodhi8942]

ASAK please explain about Inverex AC voltage stabilizer working and repair. It have only 1 relay and small transformer. Thank you

[@lifeisbeautiful9357]

Hii brother Me Mandeep soni muje muje DC 100v 50amps yani 5000 Watt output or input 85v-230v AC me smps circuit design krna he full bridge switching ke sat to. Kya? Me uc3843 ic use kr skta hu or circuit diagram design kese krna he jra bthana ji

[@HaseebElectronics]

full bridge switching keliey aap KA7500 or SG3525 or TL494 use karein aur PFC circuit use karein

[@lifeisbeautiful9357]

@@HaseebElectronics thank you for reply But mene smps circuit diagram calculate ke aapke sare video dekhe he unke anusa kosis kr rha hu pr problem aa rhi he or transformer me ring core use kr rha hu or calculation ke liye software pr dc rail me capacitor bhut bda calculate ho rha he or currant sance resistance konsa use kru jra details me btae jra me middle class family se belong krta hu to muje esa kuch btao jisse minimum cost me me ye bna pau or zvs drive me use kr sku oe ka7500 to 16 pin ic he me ske bare me kuch bi nhi janta ji thank you again

[@HaseebElectronics]

yes dear aap ko dc rail keliey 5000Watt ka PFC circuit lagaana ho ga i will explain about ka7500 in practical

[@lifeisbeautiful9357]

@@HaseebElectronics thank you brother

[@musarratalam3825]

Very good video

[@Murshad366]

Thanks for sharing

[@HaseebElectronics]

best regards and special thanks

[@zihadsohel4136]

Assalamualaikum dear Hasseb, can you please show me the transformer detail of this project(TNY226).Thinks

[@marrisna]

Sir, I hope you are doing well. I have been facing problem with my pc power supply. The problem is mainly a buzzing sound when the power is introduced to the power supply and the buzzing sound increases when a load is given to it. How can I ge rid off this problem?

[@johnmonk3381]

What's the reason the power ic tny266pn keep blowing? I have changed this ic and the flyback diode and the ic blew again

[@HaseebElectronics]

it blows in following conditions 1. if the snubber diode is short circuit (RCD snubber across the primary winding of transformer) 2. if vcc voltage are too high or uncontrolled (due to optocouoler problem). if above 6 volt, then add resistor to drop voltage 3. if transformer primary winding is short circuit internally (winding insulation is parrished)

[@johnmonk3381]

@@HaseebElectronics i found a shorted diode but not in the snubber circuit. It is the diode that is connected to + of the bridge which appears to be part of the emi suppression circuit. Not sure if this causing the ic to keep blowing. But i will change it and see what happens. I only have one more good ic left

[@HaseebElectronics]

please check 1 (in power supply off condition) the optocoupler must provide open circuit. (if it gives continuity then open it from circuit) it must open. 2. please check the inductance and primary winding

[@HaseebElectronics]

please check vcc capacitor connected at pin 1 bypass pin

[@HaseebElectronics]

kindly wait until tomorrow evening I will back to you

[@giorgostexnikos6976]

excellent analysis

[@shaycollection08976]

informative video

[@HaseebElectronics]

thanks a lot dear

[@chrysogonusndedigwe8539]

can we use a 555 timer to build an smps

[@HaseebElectronics]

yes we can basically all SMPS controllers have 555 function then more functions are added to 555 function

[@subanipatan5961]

Sir. Iam ur subscriber. Ihave small doughnut. Ic no ncp1027 It not available here. Alternate ic no pls tell me sir.

[@vlogswithraj6491]

Good job

[@shefqetkaralliu6816]

Rispetto 👍

[@HaseebElectronics]

cordiali saluti e ringraziamenti speciali

[@samiali9499]

Sir ; if you can explain 3s bms voltage charger (battery balance)

[@TECHNICALPATRA]

👌

[@HaseebElectronics]

best regards and special thanks

[@RLC_]

Selamın Aleyküm. Videolarınızı Türkçe alt Yazı ekler misiniz? Bilgilerinizden faydalanmak istiyorum. Teşekkür ederim.

[@yesudhassherin555yesudhass5]

sir TNY176PN not available in online off line market sir ...sir What can be equivalent to this ic ??? Tel me please Master 🙏 ❤

[@smartpcb4376]

Sir mere pass top224yn power integrated ic hai , 6 pin wali. maine, 3 pin wali ic order kri thi, lekin unhone galti se 6 pin wali bhej, di Sir iski data sheet nhi mil rahi , iska number search karne par 3 pin wali hi show hoti hai, iski pinout par ek video bna dijiye sir ,

[@nayanjagirdar8408]

👌👌👌👍