{847} How To Repair Computer ATX Power Supply - No Power On
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- เผยแพร่เมื่อ 2 มิ.ย. 2024
- {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 - วิทยาศาสตร์และเทคโนโลยี
That's nice tutorial
best regards and special thanks
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.
جزاك الله خيرا وكل عام وانتم بخير
جزاك الله خيرا استاذي الفاضل على معلوماتك القيمة وجعله في ميزان حسناتكم ان شاء الله تعالى ورمضان كريم عليك وعلى الاسرة الكريمة.
Great explanation I will look into one of my faulty atx power supply. Thanks again for your helpful videos 🙏🙏🙏
it is my pleasure
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
Great work.
Sayenizde yeni bir arıza tipi de gördüm. Çok güzel bir video olmuş. Teşekkürler efendim. Allah CC emanet olun.
like super informative skill job keep sharing
best regards and special thanks
Thank you very much. I enjoyed watching this beautiful lesson. I am learning electronics and English from you🎉🎉🎉
Great journey again!!! My humble thanks.
it is my pleasure
You're the best my friend ! thank you for your channel
best regards
Excellent troubleshooting and info. Many thanks.
best regards
thanks for the tutorial i learned a lot.
nice job brother
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...
thanks a lot for your beautiful comment
if you are from Pakistan or India then you can also check my Urdu channel
Haseeb Electronics Urdu
www.youtube.com/@haseebelectronicsurdu
@@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. 🤗
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,
This is very cheap SMPS, you have shown us the very nice information. ❤ Thanks.
yes dear
it is very cheap. it is an idea, that how to troubleshoot a circuit. what is circuit flow
Thank you for sharing this video! Have a great day!
best regards
Very nice job, once again!
best regards
systematic approach sir
well done😊
Thanks and welcome
v.good lessen thanks so much 🎉
it is my pleasure
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.
Weldon keep sharing
best regards
Great video
Great video very well explained keep up the good work
best regards and special thanks
It's Very informative video thanks haseeb sir . I always wait your videos based on smps😊😊
Always welcome
Good worked..
Excellent
Very useful video thanks for sharing
best regards
Very good and useful information
Thanks for sharing
Most welcome
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 🇵🇭
Nice information Sir
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 ❤
So nice of you
Very good and useful information sir thanks for sharing this knowledge to us
Most welcome
جزاکم اللہ خیراً کثیرا۔
Good job 👍
it is my pleasure
MAŞALLAH MÜTHİŞBİR EĞİTMENSİNİZ TAKİPDEYİM T.C ANKARA
en hoş geldiniz ve özel teşekkürler. sağlıcakla kalın güzel kardeşim
You are awesome 😎👍 Sir
thanks a lot
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.
Thanks for sharing🌹 ... Can you give the download link or schematic for this ATX ?
HI,you did a very amazing video..... I bought a Nox Urano II 630w atx power supply, but it never turns off, with the fan always running without being connected to any motherboard, I think the green Power On wire is short circuited with the black wires?
How can I solve this problem ?
very good sir,
Many many thanks
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
Nice...............
best regards
Mind blowing
best regards
good man
it is my pleasure
Very nice
best regards and special thanks
BRATE Posle odgledanog slajda,idemo na pice ❤
želim ti puno sreće i sreće
What desoldering pump you are using, pl tell us
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
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.
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.
Can one also alter the voltage output on this power supply and bypass the overcurrent protection or modify the current protection circuit
Curious as to where you get your schematics from my friend? I can never find anything!
danyk.cz/s_atx_en.html
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?
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.
wbat should be thr watt of the series lamp for 60 watt 100 watt 200 watt
or is it different for difference power supply
it depends on power rating of the unit under test
normally 60 - 100 watt lamp is sufficient
Can you find this fault with voltage injection like on laptops, phones etc
yes. the same technique can be applied to find any fault
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
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.
Nice video sir.
I need LITEON SMPS PA-2241-1DF Schematic
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 .
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 ?
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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.
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Thank you, respect.
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.
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
The main component of the switch mode power supply is the tranformer inductor and magnetic field
exactly YES
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.
Hi. Sir leser printer dc card pl. Explain. For working.
Sir when we see a board how to download it's doagram
👍
best regards
💯👌💐
best regards and special thanks
Please upload this video in your Urdu channel sir
yes it will available today evening
Can you post the diagram?
One of my power supply no put in stanby mode.after shutdown computer not of power supply fan working rapidly
Please send me circuit diagram for education purpose
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!!!
On pin no 8 there si 0 volt plzz help sir