{847} How To Repair Computer ATX Power Supply - No Power On

{847} How To Repair Computer ATX Power Supply, this computer atx psu power supply was dead. this power supply have +5V SB standby voltage on purple wire, 5volt PSON command on green wire. when green wire is made jumper to ground, it was main secondary power section was not turning on. while testing, i found 1N4148 diode short circuit in pulse transformer, this 350 watt atx power supply is using TL494 and LM339 ics.
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00:00 how to repair computer atx psu power supply
00:11 atx power supply is not turning on
03:25 how to troubleshoot atx power supply
03:58 how to turn on computer atx psu power supply for bench testing

[@JunPVlog]

That's nice tutorial

[@HaseebElectronics]

best regards and special thanks

[@robertoruiz7069]

HI,you did a very good video.Thank you for showing how to fix an old atx supply.Many times today people just throw these away and spend good money on new one ,But for a 25 cent part and some knowledge you can made a computer work again for along time.Great video my friend.

[@mohamedantri9433]

جزاك الله خيرا استاذي الفاضل على معلوماتك القيمة وجعله في ميزان حسناتكم ان شاء الله تعالى ورمضان كريم عليك وعلى الاسرة الكريمة.

[@abdelhamedmetwaly2782]

جزاك الله خيرا وكل عام وانتم بخير

[@kaizen1071]

Sayenizde yeni bir arıza tipi de gördüm. Çok güzel bir video olmuş. Teşekkürler efendim. Allah CC emanet olun.

[@lalithjayasinghe8163]

Great explanation I will look into one of my faulty atx power supply. Thanks again for your helpful videos 🙏🙏🙏

[@HaseebElectronics]

it is my pleasure

[@michaelmuiruri4208]

I have atx power supply that has similar characteristics and was not powering on at all but was unable to further diagnose now I have to try this I don't know how to share the power supply images with you

[@Alexis_lefr]

I found a very similar power supply in the bin yesterday.still trying to repair it!

[@syedminhazuddinrizvi3068]

I don't give people a like unless they deserve one when it comes to teaching people. You deserve my like hell.. 💪❣️ Thank you so so much...

[@HaseebElectronics]

thanks a lot for your beautiful comment

[@HaseebElectronics]

if you are from Pakistan or India then you can also check my Urdu channel Haseeb Electronics Urdu www.youtube.com/@haseebelectronicsurdu

[@syedminhazuddinrizvi3068]

@@HaseebElectronics From Bangladesh brother.. 🇧🇩 Mashallah.. Nobody can tell you're from Pakistan cause your english accent is that good. I'll definitely check out the other channel. I'll try to understand urdu for a change. 🤗

[@HaseebElectronics]

most welcome dear brother i guessed by your name so i suggested that channel, otherwise no problem. because that channel is specially for my Urdu / Hindi viewers,

[@pascalphase2556]

You're the best my friend ! thank you for your channel

[@HaseebElectronics]

best regards

[@englishrupe01]

Excellent troubleshooting and info. Many thanks.

[@HaseebElectronics]

best regards

[@saarike]

Great journey again!!! My humble thanks.

[@HaseebElectronics]

it is my pleasure

[@noelbriguez3166]

thanks for the tutorial i learned a lot.

[@remo4025]

Thank you very much. I enjoyed watching this beautiful lesson. I am learning electronics and English from you🎉🎉🎉

[@directsystems2225]

This is very cheap SMPS, you have shown us the very nice information. ❤ Thanks.

[@HaseebElectronics]

yes dear it is very cheap. it is an idea, that how to troubleshoot a circuit. what is circuit flow

[@kmhovlog6185]

like super informative skill job keep sharing

[@HaseebElectronics]

best regards and special thanks

[@omedakber]

Great work.

[@W1RMD]

Thank you for sharing this video! Have a great day!

[@HaseebElectronics]

best regards

[@frankcarpenetti5776]

Very nice job, once again!

[@HaseebElectronics]

best regards

[@muhammadishtiaq24]

Weldon keep sharing

[@HaseebElectronics]

best regards

[@Yorumcu63]

Great video

[@cotto887]

Great video very well explained keep up the good work

[@HaseebElectronics]

best regards and special thanks

[@adiseshukumpati24]

systematic approach sir well done😊

[@HaseebElectronics]

Thanks and welcome

[@palitharathnayake1637]

Good worked..

[@Dr.QaisarAbbas99]

nice job brother

[@techsolutions904]

It's Very informative video thanks haseeb sir . I always wait your videos based on smps😊😊

[@HaseebElectronics]

Always welcome

[@mohammedyousuf8743]

Assalamualaikum thank you for sharing such experience watching regular videos and it's very informative knowledge gain it's very helpful in my day today life and career.allah aapko jaza e khair de love from India keep sharing ❤

[@HaseebElectronics]

So nice of you

[@bazrazin1]

very good, all cause of the diode, also if possible on PSU's with active PFC's, i have 3 lying around no 5V sb also.

[@MarkPrince1317]

So easy for you thank you very much for sharing my brother my request about IGBTs and MOSFETs get resistor and gate to source resistor calculation if you get time please make some series of videos about resistor calculation Thank you very much and best regards from Philippines 🇵🇭

[@crisponz4521]

Hi Haseeb, i am thankful with your channel and i learned a lot from your teaching. i have a question from regarding the power supply of a MFP copier , i'm searching in social media who is repairing the LVPS but i could not find. i can repair in primary section but when it comes to secondary i could not get an actual value that suppose to be their is +&-5V, +&-12V, +&-24V. i am not sure if need to trigger first the heater section of the copier then will activate the other parts which supplied by 5, 12 & 24V. like in PSU of computer you just need to shorted the green and black wire in order to run the LVPS. please if you could share to us how to repair. Thank you very much.

[@electronium203]

Excellent

[@vijayakumarkumar9190]

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

[@HaseebElectronics]

Most welcome

[@Versatiledani]

Very useful video thanks for sharing

[@HaseebElectronics]

best regards

[@nuritepegoz6042]

MAŞALLAH MÜTHİŞBİR EĞİTMENSİNİZ TAKİPDEYİM T.C ANKARA

[@HaseebElectronics]

en hoş geldiniz ve özel teşekkürler. sağlıcakla kalın güzel kardeşim

[@shailendrachiplunkar7195]

Nice information Sir

[@Edmorbus]

Very good and useful information Thanks for sharing

[@HaseebElectronics]

Most welcome

[@JunaidKhan-qp7uk]

جزاکم اللہ خیراً کثیرا۔

[@oumarabagaro1523]

v.good lessen thanks so much 🎉

[@HaseebElectronics]

it is my pleasure

[@abbshus7421]

Thanks for sharing🌹 ... Can you give the download link or schematic for this ATX ?

[@irnkhjkj3887]

Thank u sir for all you hard work. I have a favore ti ask, can u please make a video on how we troubleshoot a ups please, and could u give us your method on how we deal with smt components?. And thank u so much

[@abdulwahid8579]

Good job 👍

[@HaseebElectronics]

it is my pleasure

[@mansirrabiu7412]

You are awesome 😎👍 Sir

[@HaseebElectronics]

thanks a lot

[@rahmanocawni5618]

Well done it seems that you are qualified service personnel. So please let do this project. ( we have to secure 36 apartments if the door is open I like to see the number of the apartment that is open with bip. Thank you so much for your help. You win hassana with ALLAH

[@palwindersandhu2031]

Nice...............

[@HaseebElectronics]

best regards

[@pu8reLib]

very good sir,

[@HaseebElectronics]

Many many thanks

[@esiakaharding9124]

good man

[@HaseebElectronics]

it is my pleasure

[@nazakathussain4871]

Very nice

[@HaseebElectronics]

best regards and special thanks

[@beinghuman9544]

As-salamu alaykum sir Thank u sir for educating us In this video Time stamp 13:27 mins you told i will make the jumper between black and green wires if series lamp glows i will remve immediately.why and what will happen if lamp glows continuously.

[@talhabhaiunique3652]

Mind blowing

[@HaseebElectronics]

best regards

[@imranmehdi111]

Excellent. Sir mere paas 2 computer power supply he donoo k 12 volt nahi aa rahe. jab Optocoupler ko short kare to yellow cable per 9 volt aa rahe he. is tarah 5 aur 3 voltages b kam aa rahe he. Is me kia masla ho sakta he.

[@itandcareer15]

What desoldering pump you are using, pl tell us

[@miloradgraovac74]

BRATE Posle odgledanog slajda,idemo na pice ❤

[@HaseebElectronics]

želim ti puno sreće i sreće

[@michaelmuiruri4208]

Can one also alter the voltage output on this power supply and bypass the overcurrent protection or modify the current protection circuit

[@chinnarao326]

Resp Sir! Nice Vedio Sir. Sir SB PS On Ok but 12వ 5V 3.3V Directed Sir and Series Lamp On Off On Off 5Times Sir FETs and POwer Transistor all are OK Where the Problem Sir. Waiting for Ur Message Sir. I am Very Hill Top Tribal Area Sir. Please Advise Sir. -- ChinnaRao Paderu Andhrapradesh

[@frankcarpenetti5776]

Curious as to where you get your schematics from my friend? I can never find anything!

[@HaseebElectronics]

danyk.cz/s_atx_en.html

[@swatichakraborty5347]

wbat should be thr watt of the series lamp for 60 watt 100 watt 200 watt or is it different for difference power supply

[@HaseebElectronics]

it depends on power rating of the unit under test normally 60 - 100 watt lamp is sufficient

[@gururajmmutalikdesai4886]

Nice video sir. I need LITEON SMPS PA-2241-1DF Schematic

[@tvbox8478]

👍

[@HaseebElectronics]

best regards

[@akierum]

Can you find this fault with voltage injection like on laptops, phones etc

[@HaseebElectronics]

yes. the same technique can be applied to find any fault

[@emrterz]

hello, s.a. I've been following your videos for along time, they are educational. I'm interested for 6 months with electonic. I've repaired too much electronic device. Sometimes success, sometimes failure. I've two question about power supply. 1-) How can you explain one time glowing at series lamp at connection psu ? The current must flow constantly, but for test purpose 1 time glows and current stops. How ? - 2) When i've connected series lamp to PSU and give energy, the bulb glow 1 time and current stops. But, when i made shortcircuit with green and black, PSU works, fan work, all voltages are good. But series lamp flickering(blinking). I've checked all components visually inspect and checked multimeter, i couldn't find. I can't comment, I think i'm not experienced yet. - Thank you, respect.

[@qingli619]

I have an old ATX power supply Antec NeoHe430. All the power rails are present and correct with no load attached. If i plug a IDE drive in to give it a load then the 5volt is only 3.6v. The other rails are still correct. I took the 5v rectifier diode out and measured it and is good. So do you have an idea what could be going on? Do you know where can i get a schematic for this power supply? Do you have a video with this kind of problem?

[@MrChrisRP]

Inspect the capacitors near the 5v line and around its generation. By eye to start, to see if there is any leaking or bulging. For sure if either of those seen, they need to be replaced. It is very possible for one of more to be bad even while looking perfect to the eye, so you'd have to test. But if you're lucky enough, you can see the problem straight away. There is a chance of it. Failing that, you might check for the values of resistors near it too, to be correct within tolerance.

[@mmshukumpeta3136]

Resp Sir! Very Excellent Class Sir. Sir Conon MF244dw Printer Power Supply DC Section 0.1Ohms 2Resistors was burned Sir and New Power FET K4005 was Replaced Sir and 2 Resistor Replaced with 1Ohms, 10 Ohms, 22 Ohms Resistors but again and again Burned Sir. and Series Lamp was a very Lettle Glowing Sir and Resistors Burned Sir. Where the Problem Sir. Very Hardly Searching Sir but not Solved Sir. Please Advise Sir. waiting for Ur Message Sir. --- Chinna Rao, Paderu, Visakhapatnam Dist, Andhra Pradesh.

[@rajapurkardb1000]

Sir KA7500B pwm controller ic pin no. 4 increasing voltage instead of 0v on ps command on. Fan will spin for seconds and stops. Give the solutions please 🙏

[@rajesno5538]

Hi. Sir leser printer dc card pl. Explain. For working.

[@MuhammadYaseen-vx5hw]

Sir, I am facing the same fault in hipro d3057f3h psu, how can i find the location of two transistors along-with that frequency diode??? Hence I found also two transistor (29074) with near a diode 6510. After that, viper 22A then a diode again 6510. Sir, was it the location of malfunction??? I will pull out these components from circuit for testing after your recommendations.

[@marrisna]

Hello sir. Recently my atx power supply is making buzzing noise. The noise increases when any load is applied. Can you please help me to find out the problem sir? Thank you.

[@hindu_stani]

sir my atx powersupply somrtime work sometime nothing .... i have checked vcc of pwm ic (uc3842) no volatge but when it work it has 20-25 volt on Vcc cant get what is the problem can you tell some steps to check . 300 volt reaching at c5027s trasnister . i think problem must be in vcc of pwm ic uc3842 .

[@Rathu]

Sir when we see a board how to download it's doagram

[@tameromarw]

Greetings to you aTx contains tl494 Vcc voltage starts at 17 volts and goes up to 19 volts is this normal I changed the tl494 gas capacitor and the voltage didn't change What's the reason

[@dhanuskalankathilaka]

💯👌💐

[@HaseebElectronics]

best regards and special thanks

[@geoeconomics5629]

The main component of the switch mode power supply is the tranformer inductor and magnetic field

[@HaseebElectronics]

exactly YES

[@sarockpashotan]

Hi my friend would you please analyze a power supply of a brand with complect schematic which is made many in all the word like a model that used 2 ic with part number: AZ339P and AZ7500BP and also has 2N60 Fet transistor Thanks too much before!!!

[@LN14YT]

Please send me circuit diagram for education purpose

[@vencislavvankov4897]

Can you post the diagram?

[@excelcreations7318]

One of my power supply no put in stanby mode.after shutdown computer not of power supply fan working rapidly

[@niranjanmajhi129]

Please upload this video in your Urdu channel sir

[@HaseebElectronics]

yes it will available today evening

[@arf848]

On pin no 8 there si 0 volt plzz help sir