Skull....... Most complete of all the smps tutorials on youtube. there re many who give info but none to practically help beginners in the field. thank you. I go over you videos many time to ensure i dont miss anything.
I want to thank you for the fantastic explanation of the ATX power supply. It was always confusing to me because I never had it explained to me the way you did. May God bless you always. Samuel Lee Steel, MD
Lk computer power supply k liye bahut accha vdo share kiya hai Aapne Bahut hi useful informative vdo Aap late hai bahut badhiya bariki seven samjhaya hai Aapne.. It's really awesome and educational
Mr Haseeb: This was an amazing demonstration of faults within ATX Power supplies. I found this very interesting and your explaination was outstanding. Thank you again for the time you invested in these wonderful videos!!!!
Excellent Tutorial, very well presented and informative. Than you very much. Keep on doing more tutorials like this one. I am sure others will like it as I do.
I want to take an old ATX power supply and follow along for training. Thank you for the video and including the scope! I'm not sure if you mentioned it, but the scope should be isolated from the mains power and ground via an isolation transformer if possible or use care not to destroy the probe, scope, yourself, or all three! I'll watch this again when I get everything set up. LOVE the light bulb idea. I test every unknown device this way. I use a 1000 watt light bulb with motors with unknown large transformers. Great as always! 🙌
Nice tutorial brother, Thank You!! I used 2-4 'mini dc voltmeters' instead 1 multimeter, so I can monitor various voltages in the same time. Just a litle trick
Mashallah very nice informative vedio my dearest brother thanks for sharing stay blessed and wonderful day and great job with the details & dedicationally be happy ameen.
best regards dear yes series lamp is a very useful tool and supporting item in repair isolation transformer is best for human safety and equipment safety as well
I hope I don't get taken the wrong way. I mean this in a good way. There is short (as in short circuit or a short person, etc.) And then there is chard which is a type of beet, a vegetable. Short rhymes with sport, abort, distort, etc. Chard rhymes with hard, card, etc. Say "short circuit" and "chard circuit" and see which one is the one you mean. Just being helpful here. You are a wonderful human being and I know you won't take this the wrong way. I have a hard time saying "h". I say "itch". It is not. It is more like "ache" as in having a tooth-ache rhyms with rage, age, page and not "itch" as in scratching an itch. :-)
😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂 it is accent, as i am pakistani national (mother language Punjabi, in schools Urdu, in Office English, and with friends Arabic) so it is big mixture like cocktail in life. you are absolutely right sir. as it is our routine, "this power supply is short", "this mosfet is short", "this transistor is short" because the life is much busy and we try to save time by saying "short" instead of "short circuit" actually the best suitable and perfect term is " *short circuit"* so i am sorry for that, i will try to use proper terms in future and please accept my best regards and special thanks
@@HaseebElectronics No, no "short" is okay. Don't say "chard" if you can help it. :-) I still have trouble with "hell, hail, hill, heel, heal", especilly with heel and heal. :-)
In using the series lamp while repairing the power supply in accidentally shorted the components part in the input or output the lamp absorbed the excess current in the ckt and no one parts are damaged I'm i correct sir tnx
Thanks for your very nice tutorial engineer haseeb, please can you explain to me how the ac signal are generated in the pc power supply I couldn't find the ic controller that drives the bases of the transistors 😢
Hello and thanks a lot for your great content... I have a power supply whose output voltage is 12.4 volts and 5.2 volts... at 12 volts the voltage fluctuates at about 1/10th... Is this voltage OK? Or it must be exactly a solid 12 volts?
Salam M.Haseeb, i tried to troubleshoot a PSU that has no output. As per your video: 0- The 5Vsb has a separate small PCB with PWM(top244p) and works fine 1- the series lamp flashes quickly at power on 2- I do have 5v at the purple wire 3- I have3.5v at the green wire 4- the 12v gives 10v then decreases untill it dies 5- the PWM ic (UC3845BN) has no VCC 6- i do have 324v dc at the main capacitors I tried to look for some shorted capacitors, but when i take them out of the PCB, they are fine, so i replaced them. Thanks.
@@HaseebElectronics OK, i will try that, no need to check the 3.3v and 5v section yet, because it is the same for them, they start with some voltage then die... Thank you
Thanks bro, I am also repairing my ATX circuit board, It is similar to the 2nd datasheet(the big one) you show us. Where did you find this, Could you please share it with us? Thanks again, this session is really nice, and useful.
Can you cover the case where 5Vsb is present but the power supply main stage shuts down shortly after the green wire is connected to the black wire at the connector and the power supply used an output voltage monitor Ic to shutdown the power supply if the output voltages are too high or too low . It is difficult to trouble shoot because the power supply turns off the outputs very quickly after the power supply turns on , so it is not easy to see which output is causing the problem or if there is a fault with the voltage monitoring chip or circuit . Have you advice for this case ?
Can you explain how to connect the scope probe safely to not create a ground loop and a short? Since both devices, the scope and the psu are mains connected, the probe can create short.
Nice educational video. i have standby on my power supply. but it does not turn on. i check it with power supply tester it beeps and the PG light is off. What can be wrong ? Thanks
Thanks for sharing! My PS has no output in 3.3, 5, 12, -12 but has 5v on standby...only 4.2v in green...what is the problem, whatnparts to check? Thanks so much?
HI! I have a quastion . i wanted to jump a compaq power supply its older , i think i jumped the wrong connector , instead of PS ON to GROUND , i thin i jumped the AUX to GROUND , now is not working , what damage u think i made now ? THX and Good luck with ur videos!!!
if you have made a short circuit between purple and black (+5v STBY) in normal cases it have no problem, just the power supply will fluctuate or turn off some models have 7805 regulator IC to give regulated 5 volt for SB so if there is 7805 (3 pin regulator looking like a transistor or mosfet) will damaged surely, try to replace it
@@denys14k okay so if the fan starts and then stops, it means the voltage supervisor ic OR over-voltage / short circuit detection is interrupting to turn off secondary power supply in this condition the STBY section is ok PWM section is ok just monitoring circuit is disabling the output
Greetings to you Tex 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
that is wrong green power on command signal he agr aap purple ko yellow k saath milaa rahey hein to it means k supply ka secondary section on nahi ho rahaa he
First like and view while watching your video, always good information, please pin my comment bro🌹🌹
Lk
Beautiful information for computer power supply repair
Nice upload
Skull....... Most complete of all the smps tutorials on youtube. there re many who give info but none to practically help beginners in the field. thank you. I go over you videos many time to ensure i dont miss anything.
Waalaikum salam wr wb nice sharing friend
03 GOOD JOB ,,,,,,,,,,,,,,,,,,GREAT
from Philippines very informative this tutorial is very clearly explained
best regards
ma shaa Allah best troubleshooting of atx power supply. thanks for sharing
Postovani BRATE gledam video od pre 3 go o Atx2005 i oduseo sam tako finim objsnjehje.Puno toplih pozfrava❤
I want to thank you for the fantastic explanation of the ATX power supply. It was always confusing to me because I never had it explained to me the way you did. May God bless you always. Samuel Lee Steel, MD
Excellent repair and diagnostic video. Very informative.
Lk computer power supply k liye bahut accha vdo share kiya hai Aapne Bahut hi useful informative vdo Aap late hai bahut badhiya bariki seven samjhaya hai Aapne.. It's really awesome and educational
Very well explained 👌
Wonderful / very useful video explained nicely TKQ v much sir
You're most welcome
Awesome. Very good
Keren gan. Bermanfaat
33 like bhai 🙏🙏
Bahut achhi hoti aapki vido bahut hi jankari milti jai 🙏🙏👌🏻👌🏻
2nd informative and useful sharing
great informational video. thanks for sharing your knowledge
it is my pleasure
Mr Haseeb: This was an amazing demonstration of faults within ATX Power supplies. I found this very interesting and your explaination was outstanding. Thank you again for the time you invested in these wonderful videos!!!!
Excellent Tutorial, very well presented and informative. Than you very much. Keep on doing more tutorials like this one. I am sure others will like it as I do.
best regards and special thanks
sure i will continue
I want to take an old ATX power supply and follow along for training. Thank you for the video and including the scope! I'm not sure if you mentioned it, but the scope should be isolated from the mains power and ground via an isolation transformer if possible or use care not to destroy the probe, scope, yourself, or all three! I'll watch this again when I get everything set up. LOVE the light bulb idea. I test every unknown device this way. I use a 1000 watt light bulb with motors with unknown large transformers. Great as always! 🙌
Great knowledge about advanced electronics, thanks for sharing 😍👍
Nice tutorial brother, Thank You!!
I used 2-4 'mini dc voltmeters' instead 1 multimeter, so I can monitor various voltages in the same time. Just a litle trick
Ma sha Allah another great sharing 👍👍👍jazak Allah khair ❤
excellent class sir, good
Thanks and welcome
Wonderful video, I have used your excellent tutorial to go through the many faulty power supplies I had accumulated. Thank you.
Very good explanation thank you very much sir
Good tiching karte hai 👌👍👌👌👌👍👌
thanks a lot
This is very helpful!
You make things look simple , understandable and easy!
Thanks.
Good morning 😁 awsome 🌼
Amazing it is useful and superb job
Excellent explaination, keep it rock ...Bro
best regards
Mashallah very nice informative vedio my dearest brother thanks for sharing stay blessed and wonderful day and great job with the details & dedicationally be happy ameen.
wonderful upload ,Great knowledge about advanced electronics, thanks for sharing 👍
Assalmaulaikum bhai nice video bro ,dont talk so fast my lect use your video for teaching us thank you bhaii😊🤩
Ok next time
best regards and special thanks
Detailed explanation. Great video. Thanks.
Really amazing 😍❤️ video. I would like to appricate your efforts. Keep it up and stay in touch my sweet friend ❤️
Nice u got skills
Series lamp technique is good. I would also use an isolation transformer. Good video, thank you for sharing.
best regards dear
yes series lamp is a very useful tool and supporting item in repair
isolation transformer is best for human safety and equipment safety as well
Really a wonderful upload .
Glad to see this.
Thank you so much Sir
Most welcome
وعلیکم سلام محترم بھای عمدہ ٹپس سدا خوش رہو
Really worth the effort. Highly appreciated.
I hope I don't get taken the wrong way. I mean this in a good way. There is short (as in short circuit or a short person, etc.) And then there is chard which is a type of beet, a vegetable. Short rhymes with sport, abort, distort, etc. Chard rhymes with hard, card, etc.
Say "short circuit" and "chard circuit" and see which one is the one you mean. Just being helpful here. You are a wonderful human being and I know you won't take this the wrong way.
I have a hard time saying "h". I say "itch". It is not. It is more like "ache" as in having a tooth-ache rhyms with rage, age, page and not "itch" as in scratching an itch. :-)
😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂
it is accent, as i am pakistani national (mother language Punjabi, in schools Urdu, in Office English, and with friends Arabic) so it is big mixture like cocktail in life.
you are absolutely right sir. as it is our routine, "this power supply is short", "this mosfet is short", "this transistor is short"
because the life is much busy and we try to save time by saying "short" instead of "short circuit"
actually the best suitable and perfect term is " *short circuit"*
so i am sorry for that, i will try to use proper terms in future and
please accept my best regards and special thanks
@@HaseebElectronics No, no "short" is okay. Don't say "chard" if you can help it. :-)
I still have trouble with "hell, hail, hill, heel, heal", especilly with heel and heal. :-)
Good explanation...
Thanks and welcome
very informative and useful video thanks for sharing
Thanks 👍
very good...
thank you
Sir can please make a small video regarding all types all diode like ...IN,fr,sr..etc...
Very nice
👍🏻👍🏻👍🏻👍🏻
Nice video 👍👍👍👍👍
#189 How to repair Computer Power Supply /ATX
In using the series lamp while repairing the power supply in accidentally shorted the components part in the input or output the lamp absorbed the excess current in the ckt and no one parts are damaged I'm i correct sir tnx
very useful.
nice video
Good job like.
thanks master
You are welcome
fantastic one/.
وعليكم السلام ورحمه الله وبركاته اخي بتوفق ونجاح احل
Correction: instead of "PFC transformer", you should say "Main power transformer", for clearly, this PSU doesn't have an active PFC circuit/block!
🎉
Thanks for your very nice tutorial engineer haseeb, please can you explain to me how the ac signal are generated in the pc power supply I couldn't find the ic controller that drives the bases of the transistors 😢
Good work
😍😍😍 thnx
best regards
Awesome
👍
best regards
Hello and thanks a lot for your great content... I have a power supply whose output voltage is 12.4 volts and 5.2 volts... at 12 volts the voltage fluctuates at about 1/10th... Is this voltage OK? Or it must be exactly a solid 12 volts?
Fourteenth lk. Good morning bhai🙋
Good
best regards
Beautiful tech shared thanks
Salam M.Haseeb, i tried to troubleshoot a PSU that has no output. As per your video:
0- The 5Vsb has a separate small PCB with PWM(top244p) and works fine
1- the series lamp flashes quickly at power on
2- I do have 5v at the purple wire
3- I have3.5v at the green wire
4- the 12v gives 10v then decreases untill it dies
5- the PWM ic (UC3845BN) has no VCC
6- i do have 324v dc at the main capacitors
I tried to look for some shorted capacitors, but when i take them out of the PCB, they are fine, so i replaced them.
Thanks.
@@HaseebElectronics OK, i will try that, no need to check the 3.3v and 5v section yet, because it is the same for them, they start with some voltage then die... Thank you
صباح الهنا 👍
👀👈👈
Thanks bro, I am also repairing my ATX circuit board, It is similar to the 2nd datasheet(the big one) you show us. Where did you find this, Could you please share it with us? Thanks again, this session is really nice, and useful.
Great Video
Like 39
*Thank you 👍*
next video please about est.7627a ic in atx .
Salm aalaikom when i found schematic diagram for atx power supply
ƸӜƷ`👍👍 👍👍👍
einen schönen Tag
pass auf dich auf 💚 bleib gesund
Grüße ❤╮ Renate
I love your videos, my SMPS have output coil burned, can I replace it with coil from other SMPS power supply? Thank you.
💖NICE VIDEO💖 my friend💖✨💍✨
صباح الخير👍
thx
Informative bro ! ❤️❤️
Can you cover the case where 5Vsb is present but the power supply main stage shuts down shortly after the green wire is connected to the black wire at the connector and the power supply used an output voltage monitor Ic to shutdown the power supply if the output voltages are too high or too low . It is difficult to trouble shoot because the power supply turns off the outputs very quickly after the power supply turns on , so it is not easy to see which output is causing the problem or if there is a fault with the voltage monitoring chip or circuit . Have you advice for this case ?
Please discuss, what to do if i get 5v in green and purple wire but no output
Can you explain how to connect the scope probe safely to not create a ground loop and a short? Since both devices, the scope and the psu are mains connected, the probe can create short.
My HP Compaq Elite 8200 SFF supply comes on for sometimes and cuts off after 5 to 20mins. What might cause this?
Nice educational video. i have standby on my power supply. but it does not turn on. i check it with power supply tester it beeps and the PG light is off. What can be wrong ? Thanks
Thanks for sharing!
My PS has no output in 3.3, 5, 12, -12 but has 5v on standby...only 4.2v in green...what is the problem, whatnparts to check? Thanks so much?
Mr haseeb I hope you explain the right way to check comparator in urgent thank you.
Thanks for replying
HI! I have a quastion . i wanted to jump a compaq power supply its older , i think i jumped the wrong connector , instead of PS ON to GROUND , i thin i jumped the AUX to GROUND , now is not working , what damage u think i made now ? THX and Good luck with ur videos!!!
if you have made a short circuit between purple and black (+5v STBY) in normal cases it have no problem, just the power supply will fluctuate or turn off
some models have 7805 regulator IC to give regulated 5 volt for SB
so if there is 7805 (3 pin regulator looking like a transistor or mosfet) will damaged surely, try to replace it
@@HaseebElectronics Thanks for Reply! I jumped the green one with the black , the fan had a short impulse and then stopped.
@@denys14k okay
so if the fan starts and then stops, it means the voltage supervisor ic OR over-voltage / short circuit detection is interrupting to turn off secondary power supply
in this condition the STBY section is ok
PWM section is ok
just monitoring circuit is disabling the output
am following thru,in this video/you did not take care of the auxiliary circuit, explain how .I missed that 😊
Sorry for that. in upcoming session we will make a deep surgery for this aux section as well
best regards
Can you fault find power supply with fault where it shuts down on power up because of some output fault
Greetings to you Tex 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
i am getting sb voltage about 5.1volt but when i switch green and black wire it doesn't start the power supply my ic is also 2005
Hi sir I want to repair atx0300p5wc, kindly share how to repair it.
Power supply me yellow and purple ko connect kerne se on ho rahi hai. Voltage 6 aa rha hai, kya karan ho sakta hai. Please explain in your video
that is wrong
green power on command signal he
agr aap purple ko yellow k saath milaa rahey hein to it means k supply ka secondary section on nahi ho rahaa he
But you can't check the voltages if the PSU has turned off
Resp Sir! SB 5V OK, PS on green 5V OK But not Turned on. Which Problem Sir...? -- Chinna Rao
check secondary side own controller ic
for any proction is enabled
may be some capacitor in output circuit is internally short circuit
@@HaseebElectronics Thank U Sir