{311} Computer ATX Computer Power Supply Repair / 5V SB Standby Voltage Fail / Input short circuit

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{311} Computer ATX Computer Power Supply Repair / 5V SB Standby Voltage Fail / Input short circuit

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Computer ATX Computer Power Supply Repair / 5V SB Standby Voltage Fail / Input short circuit, Fuse keeps blowing
i explained practical How to repair computer ATX switch mode power supply SMPS very easy. this PSU had no output on STBY +5V standby missing, short circuit in input section, the fuse burnt out.
Download 300 Watt computer ATX power supply circuit diagram /schematic using 2003 IC bit.ly/3MSExF9
i shared my easiest and perfect troubleshooting techniques to repair computer AT or ATX power supply, i found rectifier diodes, fuse, power transistor, diodes in standby inverter section. smps concept and troubleshooting repairing or understanding repair switching mode power supply basics and working principle. how to troubleshoot input electromagnet induction filter, EMI, bridge rectifier and capacitor. we get 330 VDC at main capacitor. after hat the +330 volts are applied to standby power, which is SMPS and makes +5V SB, these stand by voltage are applied to motherboard which pull down the PS ON green wire to zero level, so the ENABLE OR REMOTE ON or CONTROL pin of #smps will go low that will enable pulse width modulation. and also i discussed smps basics. after watching this video you can capable to:-
understanding atx power supply basics circuit diagram schematic with complete tutorial
working of atx smps
if computer power supply does not on, or fan runs and stops, fluctuation, turns on goes off again or fail to start
short circuit, or fuse blows burns again and again
how to #repair #smps
how to #repair #computer #power#supply #atx
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no ouput
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
how to troubleshoot #PWM #SMPS #controller when there is no switching from #MOSFET
if SMPS have a whistle sound or excessive noise or excessive heat
how to repair mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
#computer #power Supply, #computerpowersupply, #atx #repair #troubleshoot #SMPS #test #hacks #howto #STBY
ATX power circuit diagram / schematic explained • #168 ATX POWER SUPPLY ...
• #178 ATX POWER SUPPLY ...
71 ATX Power Supply Circuit Description in Urdu / Hindi • #171 ATX Power Supply ...
• Video
how to increase output of SMPS • #150 How to increase o...
short in put of SMPS and fuse burns again and again • {145} Fuse Keeps Blowi...
fluctuations in output of power supply • #144 Fluctuations in o...
smps basics tutorial and testing • #141 SMPS Switching Mo...
feedback in smps • #142 FEEDBACK in Switc...
how to repair troubleshoot smps • Video
How to repair switch mode power supply SMPS practical troubleshooting • How to repair switch m...
SMPS / PWM basics circuit description with practical switch / switching mode power supply • SMPS / PWM basics circ...
SMPS Switching switch Mode Power Supply repair Basics & Troubleshooting • SMPS Switching switch ...
SMPS practical tutorial • SMPS Switching switch ...
• Video
SMPS tutorial and practical troubleshooting and fault finding • SMPS / PWM basics circ...
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Пікірлер: 224

@mohammadjafari6749 3 жыл бұрын

As a Power Electronics Engineer, I admire you and your circuit analysis! You are one of the best in this field.

@HaseebElectronics 3 жыл бұрын

salaam o alaikum brother thanks a lot for your valuable words best regards

@rajvanshsingh7190 3 жыл бұрын

Hi Sir, Sir one week ago i asked you to make a video on how to repair and change the voltage and current through a potentiometer of a Power Supply Based on TL494 IC, what is the phenomenon through which the power supply which controls the current, and i also asked you to make a video on how to make a power supply which is powerful at home with simple components using TL494 IC. Sir please make a video on this subject. I WOULD BE VERY GREATFUL TO YOU. Thank you very much, LOVE FROM INDIA!!!

@Dipaknitting 3 жыл бұрын

में भी एक इलेक्ट्रॉनिक्स स्टूडेंट हूं आप का समझाने का तरीका बहुत अच्छा है।मैने भी अपा का चैनल ज्वाइंट किया।

@HaseebElectronics 3 жыл бұрын

best regards and special thanks for your valuable visit

@HaseebElectronics 3 жыл бұрын

मुझे यह जानकर खुशी हुई कि आप भी इलेक्ट्रॉनिक्स के छात्र हैं। शुभकामनाओं के साथ विशेष धन्यवाद

@Swenser Жыл бұрын

Haha. That fuse didn't burnt out, it got sent to hell and exploded into a death ball. Thanks so much for your helping all the societies around the world. Unlike governments , you are actually doing a great job. Thank you.

@rmjnm 3 жыл бұрын

You are great sir, thank you very much. There's a great need of people like you on KZfaq who have genuine knowledge.

@HaseebElectronics 3 жыл бұрын

It's my pleasure, happy new year dear

@irzumkhan412 3 жыл бұрын

sir pleas ATX series ..really really need it badly...

@HaseebElectronics 3 жыл бұрын

sure i will make a complete series on ATX on my both channels on this channel in English language and on my *haseeb electronics urdu* videos in urdu language

@56pramod 3 жыл бұрын

Very good video , I will impatiently wait for next video.I have got one ATX SMPS where stand by voltage is 5V and when ps on is shorted then SMPS starts for few minutes and then it stops.what will be the reason ,may be short capacitors on secondary side or elsewhere.please guide.

@HaseebElectronics 3 жыл бұрын

if it stops after few minutes, then there is possibility of leakage of output capacitors or rectifiers try to re-solder POWER MOSFETs, Power transformer, and power rectifiers in secondary section i will share the next part of the video very soon

@56pramod 3 жыл бұрын

@@HaseebElectronics thanks I will check secondary side capacitors and then let you know

@rodericklomberio7942 3 жыл бұрын

swiching grey and green , but now .. thank you , we have more blog ano tther video tuturial thank you ,

@HaseebElectronics 3 жыл бұрын

You are welcome!

@ZaykaIndia 3 жыл бұрын

Lk. 64. Very useful upload big 👌👌 and Happy New year 🎊🎊

@HaseebElectronics 3 жыл бұрын

Thank you so much happy new year

@JunaidKhan-qp7uk Жыл бұрын

جزاکم اللہ خیراً کثیرا۔

@gamingwithsuper1844 2 ай бұрын

Thank u sir my psu just blast

@matheuslobato4224 Жыл бұрын

Amigo adoro seus videos, sou do Brasil, ligo a legenda pq não sei fala inglês pelos menos uns 70% por cento eu entendo kkk, graça a o meu conhecimento de eletrônica, obrigado por compartilhar seu conhecimento você e nota 10

@HaseebElectronics Жыл бұрын

muito obrigado querido irmão

@Ayeshainthekitchen 3 жыл бұрын

Assalamualaikum dear brother.MashaAllah amazing and informative upload.Thanks for sharing your valuable work...

@HaseebElectronics 3 жыл бұрын

So nice of you

@kanchankondhare 3 жыл бұрын

🙏❤👌Genius teach sirji👌🙏❤ sirji multimeter Best Konsa h❤🙏👌

@HaseebElectronics 3 жыл бұрын

thanks a lot dear multimeter to Fluke ke achhey hein lekin expensive hein aap Pro's Kit ke, Uni-T ya kisis aur company ka meter jis me auto-range ho, frequency, capacitor, diode ka option ho, le lein. i suggest, please check Pro's Kit MT-1232

@kanchankondhare 3 жыл бұрын

@@HaseebElectronics Hertsfuly Thanks u valubal feedback

@selvakumar3393 3 жыл бұрын

Very clear explain thank you sir

@HaseebElectronics 3 жыл бұрын

You are welcome

@kmhovlog6185 3 жыл бұрын

Awesome mashallah superb informative vedio big thumbs up thanks for sharing stay blessed and happy good morning

@HaseebElectronics 3 жыл бұрын

Jazaak Allah khair

@kuchpanktiyajindagiki 3 жыл бұрын

Best way explain. Keep sharing

@HaseebElectronics 3 жыл бұрын

Thanks a lot

@boybravo689 2 жыл бұрын

Sir i like your desoldering pump very nice

@calligraphe0125 3 жыл бұрын

thank a lot sir haseeb from morroco .

@HarlavanisPanagiotis 3 жыл бұрын

Wonderful work brother, happy Sunday!!!

@sagartrueshayar2517 3 жыл бұрын

2nd lk 👍 bro very important

@chinnarao326 Жыл бұрын

Resp Sir! Very Nice Class Sir. -- ChinnaRao Paderu Andhrapradesh

@HaseebElectronics Жыл бұрын

most welcome

@chinnarao326 Жыл бұрын

@@HaseebElectronics Dhanyavaadh Sir. -- ChinnaRao Paderu Andhrapradesh

@AaoSikhen 3 жыл бұрын

Great upload. Wish you a happy, healthy and prosperous new year for you and your

@HaseebElectronics 3 жыл бұрын

thanks a lot. stay blessed

@fadaazahira 3 жыл бұрын

SO PERFECT WORK DEAR I LK ..I ENJOYED WITH U MANY TNX

@ARA-HOUSE 3 жыл бұрын

Lk 46 good sharing ❤ Keep it up 👏👏👏👏

@HaseebElectronics 3 жыл бұрын

Thank you so much

@ronyahmad71 3 жыл бұрын

Repair Computer Power Supply ,,Wonderful work brother 👍👍

@khanlalavlogs 3 жыл бұрын

Great presentation like always, with an excellent explanation, keep it up bro...

@HaseebElectronics 3 жыл бұрын

So nice of you

@4EVERGR 3 жыл бұрын

Thank you for your great tutorial video in electronics. Will you please make step by step video about diagnostic and repairing ups power board ? Thanks in advance !!!

@HaseebElectronics 3 жыл бұрын

I will try my best. to share full featured troubleshooting process

@mehmedkaymakci 3 жыл бұрын

Very good job

@HaseebElectronics 3 жыл бұрын

best regards. special thanks

@Zaikonkibahar 3 жыл бұрын

zabardust very informative video great sharing bhai

@HaseebElectronics 3 жыл бұрын

Thanks for visiting. best regards

@oumarabagaro1523 Жыл бұрын

Thanks so much again and again

@HaseebElectronics Жыл бұрын

Always welcome

@r.c.748 3 жыл бұрын

Fabulosa explicación. Muchas gracias por compartir. Saludos.

@HaseebElectronics 3 жыл бұрын

thanks a lot. stay blessed

@apnirasoi5445 3 жыл бұрын

Very beautiful video h 🙏🙏🙏🙏🙏

@halukcalp8954 Жыл бұрын

Assalamu Aleyküm brother. Thank A lot from Turkey. You are perfect knowledge in this Area. İ have A question. Stb voltage is 5 volt but pson voltage is 2,46 volt and power supply is not turning on? Everything is seems like normal. İ will so happy if you answer this mu question. Assalamu aleykum brother..

@zakiausa 3 жыл бұрын

Thanks for sharing God bless you brother happy new year💟👍🎊🎈

@HaseebElectronics 3 жыл бұрын

special thanks for your valuable visit Happy new year

@farrukhazad 3 жыл бұрын

MashaAllah , nice video , u r doing good job , excellent work . i like , watch till end .

@HaseebElectronics 3 жыл бұрын

Thank you so much

@ahmedmadkour 3 жыл бұрын

That's very beautiful 😍 My brother 👊 give you super 👍

@HaseebElectronics 3 жыл бұрын

Big thanks

@janasmeal7916 3 жыл бұрын

Ma sha Allah as always well explained thanks for sharing stay blessed dear brother

@HaseebElectronics 3 жыл бұрын

best regards dear sister. stay blessed

@hijabsandyou6328 3 жыл бұрын

Mashaallah Mashaallah.. amazing work my brother.. Allahswt continue to bless you AMEEN AMEEN SUM AMEEN...🍁👃👌🍁👃👌🍁👃👌🍁

@HaseebElectronics 3 жыл бұрын

Many many thanks

@jackjaga 3 жыл бұрын

Thanks for the service you do for us. Sir in my atx power supply power good is not generated, but I get all the voltages. What should I do now sir?

@HaseebElectronics 3 жыл бұрын

if your ATX supply have any comparator like LM339 or LM358 check its +ve supply from SB voltage and check that 5 volt from secondary power supply is fed to this comparator to generate PG signal. or if this ATX have supervisor ic to generate PG signal, then trace its circuit to sense volts for Power good signal

@wesameed824 3 жыл бұрын

Very good and informative lesson Thaaank you

@HaseebElectronics 3 жыл бұрын

You are welcome

@rashidm9396 3 жыл бұрын

Very nice brother

@HaseebElectronics 3 жыл бұрын

thanks a lot dear

@CookwithMahasina 3 жыл бұрын

L53...nice share....

@HaseebElectronics 3 жыл бұрын

Thanks for visiting. stay connected and keep visiting

@farrukhazad 3 жыл бұрын

MashaAllah , ilike ur work sir

@HaseebElectronics 3 жыл бұрын

best regards and special thanks

@kahitanongmaisip9358 3 жыл бұрын

this series of vids i will wait it finally smps tutorial one of my dream to know how it works and repair it

@HaseebElectronics 3 жыл бұрын

yes dear i have to complete it. i will dig it deep and will try to explain every possible point

@Jhunussimplelife 3 жыл бұрын

Wow that's awesome dear friend 👍

@HaseebElectronics 3 жыл бұрын

Thank you so much 😊 stay connected

@Dr.QaisarAbbas99 3 жыл бұрын

nice job dear bro ,big like stay blessed

@HaseebElectronics 3 жыл бұрын

Many many thanks best regards

@muhammadishtiaq24 3 жыл бұрын

Excellent information on power supply

@HaseebElectronics 3 жыл бұрын

Thanks for watching Happy new year sir

@DARA-pt9tx 3 жыл бұрын

Great job 👍👍👍

@HaseebElectronics 3 жыл бұрын

thanks a lot

@amianantech6298 3 жыл бұрын

Great tutorial sir

@HaseebElectronics 3 жыл бұрын

Thanks and welcome

@TheGB133 4 ай бұрын

Assalamu'alaikum sir, Very Nice Explanation sir. I Got case when two Capacitors on main section input wasn't reach 300+ vdc. It's only reach 170 vdc. Can you give me a clue, why this situation happen ? Tks very much sir

@wthornton7346 3 жыл бұрын

Any idea what causes 4 diodes to fail at the same time? Happy New Year!

@HaseebElectronics 3 жыл бұрын

sometimes high frequency spikes having larger time period reach with line voltage and if there is no input filter EMI/RFI filter, and the spike width is larger than the diode's allowed limits, then in first half cycle one pair burns out and causes to short circuit at bulk capacitor if the fuse burning time is slow, it will case to damage the other pair as well now the main ac is directly connected to bulk polarized capacitor now there are 2 optiona 1. fuse have to blow away. OR 2. Main DC capacitor and next all circuit have to be damaged

@wthornton7346 3 жыл бұрын

@@HaseebElectronics thank you sir. A very detailed explanation.

@HaseebElectronics 3 жыл бұрын

welcome and special thanks it is my pleasure

@TheGB133 5 ай бұрын

Nice explanation sir😊

@HaseebElectronics 5 ай бұрын

Thanks and welcome

@meandbabajan76 3 жыл бұрын

Best sharing your experience video

@HaseebElectronics 3 жыл бұрын

Thanks a lot

@vijayakumarkumar9190 3 жыл бұрын

Very useful information sir thanks

@HaseebElectronics 3 жыл бұрын

thanks a lot dear

@user-pq5tz5pn4g 3 жыл бұрын

السلام عليكم ورحمه الله وبركاته بتوفق دائما يارب احلى بصمه

@crazyhamselectronics6318 10 ай бұрын

Thanks for sharing your experience and knowledge 🎉

@TeresitaMendoza 3 жыл бұрын

Great job very good technician Big thumbs up keep on blogging friend

@HaseebElectronics 3 жыл бұрын

Thank you so much 👍

@mrmilan2012 2 жыл бұрын

Sir Kindly Share Schematic Digram in description to help us in future.. Kindly

@HaseebElectronics 2 жыл бұрын

please check video description bit.ly/3MSExF9

@keyboardmelodies5954 3 жыл бұрын

Well explained & presented video. Thanks for sharing

@HaseebElectronics 3 жыл бұрын

So nice of you. stay connected

@BajisKitchen 3 жыл бұрын

As always good sharing 👍🌟

@HaseebElectronics 3 жыл бұрын

Thank you 👍 for your valuable visit

@lvwilb5687 3 жыл бұрын

GREAT WORK,DO YOU EVER SUBTITUTE ANY PARTS FROM DONAR BOARDS OR TEMPORARY BYPASS OF SOME COMPONENTS LIKE MOSFETS,TRANSISTORS.

@HaseebElectronics 3 жыл бұрын

thanks a lot. stay blessed yes i take parts from donor boards just for making video tutorials otherwise i never compromise on passive components. but ICs and semiconductors are reused if that are functional

@susantaatha6468 3 жыл бұрын

Excellent

@HaseebElectronics 3 жыл бұрын

Thank you so much 😀

@norbithehun 2 жыл бұрын

Very useful description. Thanks for your job.

@HaseebElectronics 2 жыл бұрын

thanks a lot dear

@khaledibrahim8609 3 жыл бұрын

Thank you 😊

@msbbadsha1456 3 жыл бұрын

nice video

@HaseebElectronics 3 жыл бұрын

Thanks a lot

@masall_teknik 3 жыл бұрын

hi friend...good video

@kuchpanktiyajindagiki 3 жыл бұрын

Wonderful work. Good day brother

@HaseebElectronics 3 жыл бұрын

best regards dear sister

@kuchpanktiyajindagiki 3 жыл бұрын

God bless you. I always wish I have more sweet brothers like you. But I am not getting 😂

@CookingKhabir 3 жыл бұрын

Very nice

@halleibranee3026 3 жыл бұрын

Love ❤️ your video’s Thank you

@HaseebElectronics 3 жыл бұрын

You are so welcome!

@hiakumaruSo2 3 жыл бұрын

Good Luck my friend ❤️😊

@HaseebElectronics 3 жыл бұрын

thanks a lot. stay blessed

@creativityontrack5212 3 жыл бұрын

L66...very useful share... Joined you...

@felixfredrik5461 3 жыл бұрын

Please can you do a video on led tv screen repair

@HaseebElectronics 3 жыл бұрын

yes dear i have to start a complete series

@Chaine_wafaa92 3 жыл бұрын

ماشاء الله تبارك الله 🌹👍

@AbdulMomenZargar60 3 жыл бұрын

Salaam Janab Bhaiya Jee

@HaseebElectronics 3 жыл бұрын

thanks a lot. stay blessed

@hasi4tech931 2 жыл бұрын

Great air

@HaseebElectronics 2 жыл бұрын

best regards and special thanks

@bobyshakya1298 3 жыл бұрын

Very good video sir ji sar isko Hindi mein bataenge sar ji

@RajKhandwala Жыл бұрын

I have a faulty atx power supply and standby power is available how to check further? Which video is in continuation of this video? 311

@gasparreis303 3 ай бұрын

I have an ATX Uranus power supply, and it never turns off, I've already changed 3 motherboards, and the defect is always the same, it's always on, I checked that the green wire is in a short circuit with all the black wires. How can I resolve this? Could it be the output electrolytic capacitor? Could it be the optocoupler? Could it be from the integrated output control circuit?

@HaseebElectronics 3 ай бұрын

When green wire is connected to ground then Power supply turns on If it is short circuited with black wire it will keep PSON command pullled down Check voltage on green wire, it must above 2.5 volt If there are 2.5 volt and power supply remains on, then trace the circuit might be power supply supervisor ic is problematic In case you are unable to find 2.5 volt or above on green wire Then trace 5 volt standby section (purple wire and related portion to green wire)

@gasparreis303 3 ай бұрын

@@HaseebElectronics Thanks but I check voltage on green wire and is 0 Volt. ATX power supply, but it never turns off, with the fan always running without being connected to any motherboard

@niceeleven7838 2 жыл бұрын

Please help me i watch your videos, i fix 2 pcs atx power supply, one atx psu standby voltage is 3v, and the another .1v to 3v flunctuation, what might be the problem, when is the release of the continuation of thiz series much anticipated, what is the problem when low voltage or flunctuating standby voltage?

@salmankhan-qi5zl 3 жыл бұрын

Nice veadio

@HaseebElectronics 3 жыл бұрын

Thank you so much 😀

@directsystems2225 3 жыл бұрын

Hello sir, Assalamu Alaikkum . Can you do video that how to setup a series lamp for find short circuit

@MuhammadMI 3 жыл бұрын

Superb

@HaseebElectronics 3 жыл бұрын

thanks a lot dear

@renebea9 7 ай бұрын

what about if 5vsb slightly higher? about 5.6v?

@irzumkhan412 3 жыл бұрын

sir i do have ATX power supply, in which ps on green wire have 4.0 volt but when i short green to black , no witching and fan not spinning, i open tested bridge rectifier ok out put got 330 volt dc, same voltage i am getting on output capasitor which is 450v 180uf....what do you think have solution?

@irzumkhan412 3 жыл бұрын

i got my reply , my sb or sv voltage is available but 12 volt for signal transformer is not available...now how to Repair that one sir?

@irzumkhan412 3 жыл бұрын

i got answer at your video 18:23

@HaseebElectronics 3 жыл бұрын

indeed I am happy to listen that all replies for your questions were in my video, it is my pleasure

@ilhamsy 3 жыл бұрын

Check resistor 10 ohm, check dioda zener,

@iuriigolovchenko1220 3 жыл бұрын

Haseeb I have no stand by voltage can you please help me identify which component is fail on that circuit. I have voltage on stand by ic and input of 5v transformer but nothing after that no voltage on the cold side at all. Thanks

@HaseebElectronics 3 жыл бұрын

can you please send me the part number of switching ic

@norvinsakiral4450 3 жыл бұрын

Walaikumusalam, thanks for sharing your knowledge.

@HaseebElectronics 3 жыл бұрын

It's my pleasure

@MuhammadAbdullah-pn2si 4 ай бұрын

I have 8 pins 290 watts psu. In my case this only 5 volts is low to 4.73 volts. The problem is, my computer remains turn on for few minutes then suddenly turns off (power out), then again restarts after few minutes. In other wires i have perfect 12 volts. How I diagnosed that I have faulty a PSU. I replace this PSU with other 280 watts atx 24 pins using connector. Now, my pc is working fine with old psu. But i want to repair its own built-in psu.

@Nitty-GrittyElectronicsRepairs 3 жыл бұрын

Good job weldone sir! Please Sir, how can one get to know the voltage rating of a zener diode in a circuit since this is not always available on the zener diode body?

@MrDave17jan 3 жыл бұрын

Sir, i have one question? i would be glad if you answer it, one day i was trying to repair my smps, after changing some of the burned out component, then i tested without using a series lamp, it blew the mcb off including the mcb attached on the wall, could you please tell me that if I use a series lamp, will be more safe, pleased to know the main purpose of using a series lamp....

@HaseebElectronics 3 жыл бұрын

Oh it is so sad. if there is a proper value fuse is used, then there is no way to become a huge damage. might be there is wrong value fuse or fuse is bypassed by something. while repair process it is best to use series lamp, because it prevents damages and provides a vital support in troubleshooting and covers many human errors in repair process

@MrDave17jan 3 жыл бұрын

@@HaseebElectronics you really are a blessing to many, i will use a series lamp from now on...thank you so so much

@HaseebElectronics 3 жыл бұрын

@@MrDave17jan best regards

@bharatbosamia8814 Жыл бұрын

Sir, Can we replace 5027s (small) to c3866 big? After chnage it 3866 i get 8volt in standby? And lamp glow little.

@electroniquepassion 3 жыл бұрын

Super 👍😉

@HaseebElectronics 3 жыл бұрын

best regards

@vibinvibi7416 2 жыл бұрын

Respected sir, can you tell me possible to make a adjustable power supply( voltage and current need to adjust) by using this type atx power supply ? Please reply.

@HaseebElectronics 2 жыл бұрын

okay dear i noted it and i will try to do it practically very soon

@vibinvibi7416 2 жыл бұрын

Thank you so much sir. Waiting. 🙏

@ramprasadpanigrahi8643 Жыл бұрын

Sir, in one of ATX supply 5V stand by and PS on 5 V is there 16 V available in feedback transformer still it is not turning on what is the problem, how to rectify please guide me

@crazyboy-eu7gl 3 жыл бұрын

MashAllah

@HaseebElectronics 3 жыл бұрын

Jazaak Allah khair

@k.r.vasudevankozhimukkath5235 2 ай бұрын

Sir, sb transformer there is no second voltage. That is 14 volt . What may be wrong?

@HaseebElectronics 2 ай бұрын

if pulse transformer driver transistors get short circuit, that volatge will drop might be SB transformer that winding is open circuit or its rectifier diode is damaged

@YIFO00 Жыл бұрын

can u help ? i startup my pc and my power supply has short circuit sound and than when i turn on keyboard led lights short circuit sound goes up or turns off pc so whats should i do?