{892} 24v power supply repair, not turning on

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Күн бұрын

in this video number {892} 24v power supply repair, not turning on, i demonstrated and explained how to repair 24v 10a smps switch mode power supply, this UC3845 current mode smps controller circuit is using SSH8N80 power mosfet. it is not working, not turning on. in this smps repair tutorial step by step troubleshooting process.
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00:00 24v power supply repair, smps not turning on, power supply not turning on, 24v power supply repair, troubleshooting 24v power supply, 24 volt power supply repair, smps, repair, power supply, how to repair smps, smps repair, how to repair switch mode power supply, very easy repair of smps, switch mode power supply, smps power supply, power supply repair, how to repair, switching mode power supply, switching mode regulator, haseeb electronics, switching mode power supply tutorial, smps output voltage low, real electronics tips and tricks, smps power supply repaing, repair 24volt power suppy, smps is not working
00:44 smps troubleshooting and repair
03:07 uc3845 smps circuit repair
03:49 bridge rectifier in circuit testing
06:03 how to troubleshoot uc3845 ic vcc circuit, startup circuit
10:52 us3845 ic vcc pin short circuit
14:36 how to solder ic properly in the circuit board

Пікірлер: 162

@electroniquepassion Жыл бұрын

Good 👍👏👋

@HaseebElectronics Жыл бұрын

thanks a lot

@miloradgraovac74 Жыл бұрын

Dragi BRATE jedva sam odlegaò snimak ,mislim da si znao da je ic u prekidu,mnogo VAS pozdravlja❤

@renantejosesiguiente1442 10 ай бұрын

Thanks for the walk through trouble shooting😊

@ervinsz Жыл бұрын

Nice explanation, no theory, just pure practice!

@HaseebElectronics Жыл бұрын

it is my pleasure

@cranegantry868 Жыл бұрын

Nice job of fault finding.

@HaseebElectronics Жыл бұрын

it is my pleasure

@cranegantry868 Жыл бұрын

@@HaseebElectronics I'd like to see you get an isolation transformer for improved safety. I have one in my workshop. Isolation transformers are made with small inter-winding capacitance and other features. SMPS's are dangerous. I really don't like them. You have a great channel, I love it.

@HaseebElectronics Жыл бұрын

I already have isolation transformer for my workbench and separate transformer for my test equipment

@callishandy8133 Жыл бұрын

Good analysis what was broken. - Nice video, - good video cut and - perfect explained what you check - to find the fault in some minutes. Well done and *my thump up*. Additional information = In europe the amount of money for one hour worktime... (plus fuse, plus IC UC3845 at 2023-june-07 = US$ 1.51 + tax + postage or cheapest seller 0,29 Euro + 5,95 Euro postage and wait for delivery) ... is higher than a new 24 Volt SMPS (=switching power supply). We must have a very very very good reason to spend more money as we pay for a new SMPS ... Often we have a lot of spare parts (to repair straightaway, change the SMPS in minutes and get the production plant running). A *new SMPS have* = new *capacitor*, *ventilator*, no oily dirt inside, new diode, new MOSFET, etc and the time to fail is reset to zero for these SMPS. But we have a lot electronic waste parts ...

@mahmoodh7767 2 ай бұрын

Perfect 👌👌👍👍🙏🙏💟💟

@alexp2011a 6 ай бұрын

I didn't know the phone can be used as magnifying glass, that is good to know. Thanks for the video.

@user-zg3nb1mk5b Жыл бұрын

You are an excellent teacher. Thank you very much. Waiting for more similar videos of repairing other power supplies. Again thank you very much. You certainly deserve it. May God be with you always, Amen.

@arunkumar-bh2dp Жыл бұрын

very clear explanation for troubleshooting the smps

@HaseebElectronics Жыл бұрын

best regards

@kennedymutale5277 10 ай бұрын

Great work thank you

@HaseebElectronics 10 ай бұрын

best regards

@niranjanmajhi129 Жыл бұрын

Nice explain sir

@HaseebElectronics Жыл бұрын

it is my pleasure

@vijayakumarkumar9190 Жыл бұрын

Very good and useful information thanks for sharing this knowledge

@HaseebElectronics Жыл бұрын

best regards

@rameshank.r6474 3 ай бұрын

Excellent Sir, Nice Explanation,waiting for more videos

@fuzzs8970 10 ай бұрын

Hello my friend. Good to see you become a super star on KZfaq.

@HaseebElectronics 10 ай бұрын

please accept my best regards 💕

@TheWickerShireProject 5 ай бұрын

Great video. Very professional and understandable. Good job sir.

@ahmedsoffy581 Жыл бұрын

nice work

@jcsudeshchannel8224 Жыл бұрын

I like your warning that you aware the people that if anyone doesn't have the proper knowledge in this shouldn't do the same that is great thanks

@HaseebElectronics Жыл бұрын

yes dear. if someone don't have knowledge about electrical safety, then it is dangerous

@rapsrandom2051 Жыл бұрын

Very good tutorial Sir.. Waiting for the next video Sir.. Thank you...

@baghdadiabdellatif1581 10 ай бұрын

Great work

@HaseebElectronics 10 ай бұрын

best regards 💕

@rodneygoeiman4433 11 ай бұрын

Hi Haseeb I find the tutorials informative

@ugtechnicalyoutubechannel6780 5 ай бұрын

Nice sir .....im ur subscriber...i need this multimeter...

@jetroompoc3736 Жыл бұрын

WAtching from philippines..

@HaseebElectronics Жыл бұрын

most welcome

@dzabakwesi2213 6 ай бұрын

I really really like your videos sir. Keep up the good job

@SteveBagdasar 7 ай бұрын

Great Video, Watched most of your videos and learned a lot. Thank you keep up the good work

@HaseebElectronics 7 ай бұрын

best regards

@mohamedniyaz7530 11 ай бұрын

Explanation v clear with advise

@HaseebElectronics 11 ай бұрын

best regards

@usamaghanem975 Жыл бұрын

Very good

@HaseebElectronics Жыл бұрын

best regards

@georgenicholas5210 11 ай бұрын

Nice job, and after 50+ years of repairs, I learned something new. One suggestion, if you already have the board out, might as well shotgun the electrolytic capacitors, as they are often the issue with switching supplies--especially any on the high-voltage side.

@JayWye52 3 ай бұрын

depends on how old they are. doing an ESR check will tell you if the electrolytics are good,marginal,or bad. then you're not replacing caps that are OK. I love my Dick Smith ESR meter. Often,electrolytics going bad will discolor or begin to bulge. Those have to go. Housekeeping supply caps are a common switcher failure.

@AbdulMomenZargar60 Жыл бұрын

Subha Ka Salaam Janab Bhai Sahib

@HaseebElectronics Жыл бұрын

wa alaikum salaam bhai sahab

@bobtee7899 4 ай бұрын

you Da man Haseeb😀

@startrek416 Жыл бұрын

very useful

@HaseebElectronics Жыл бұрын

it is my pleasure

@Solder_it 9 ай бұрын

Thank you!

@HaseebElectronics 9 ай бұрын

You're welcome!

@rohanranjandesilva465 Жыл бұрын

very good Vedio thank you very mach I waiting for this Vedic

@HaseebElectronics Жыл бұрын

it is my pleasure

@anatoliynikolov8771 11 ай бұрын

Yes, thanks really useful for some users , some them may feel like advanced....... Congratulations, I appreciate your work for doing such videos ! 👍

@HaseebElectronics 11 ай бұрын

You are welcome!

@gauripartapshanker9197 Жыл бұрын

Informative vedeo. Thank u so much. God bless you.

@HaseebElectronics Жыл бұрын

thanks a lot dear brother

@zokim9733 Жыл бұрын

A job well done................. 👍👍👍👍👍👍👍

@HaseebElectronics Жыл бұрын

thanks a lot

@mr.gathuru828 Жыл бұрын

Thank you Professor for enlightening us

@HaseebElectronics Жыл бұрын

My pleasure

@stevenA44 11 ай бұрын

Cool. Thanks. Might be able to use this for a different power supply I have that doesn't work.

@HaseebElectronics 10 ай бұрын

You can

@muhammadwazir3350 11 ай бұрын

Very nice

@rectify2003 11 ай бұрын

Good Fix 👍

@vijayakarekar Жыл бұрын

Always good hand....

@HaseebElectronics Жыл бұрын

best regards

@vijayakarekar Жыл бұрын

Thanks sir ji....

@HaseebElectronics Жыл бұрын

it is my pleasure

@mehmetnejdetyazgan7137 6 ай бұрын

Okey

@weiaungweiaung 11 ай бұрын

ကောင်ပါတယ်ဆရာ👍👍👍

@HaseebElectronics 11 ай бұрын

ကြိုဆိုပါတယ် ချစ်ညီလေး

@user-sr1tq5eb8p Жыл бұрын

Excellent video and repair.

@HaseebElectronics Жыл бұрын

it is my pleasure

@hlenganimathebula487 5 ай бұрын

It will be good some to be explained mostly in English .

@antiamperak Жыл бұрын

Výborná práce dobře vysvětleno jak vyměnit IC.

@HaseebElectronics Жыл бұрын

je mi potěšením. pozdraví

@mehmetnejdetyazgan7137 6 ай бұрын

Thank you

@HaseebElectronics 6 ай бұрын

You're welcome

@Edmorbus Жыл бұрын

Keep up the good work and thanks for sharing

@HaseebElectronics Жыл бұрын

best regards

@oscarvalenzuela262 Жыл бұрын

good job thanks..

@HaseebElectronics Жыл бұрын

it is my pleasure

@ashenafielcho4181 11 ай бұрын

You are great, you are making good excellent videos in every topic. Can you make a video about UPS transformer?

@Abdallah.795 11 ай бұрын

Thanks a lot learned from it❤

@peterfong2241 11 ай бұрын

Blessed love my brother, Can you tell me how to modify a 12 volt one to about 15.5 volt ?? Please and thanks, watching from Jamaica west Indies !!

@aliemlek Жыл бұрын

👍👍👌👌

@electronium203 Жыл бұрын

at minuets: 15:14 wow 👌 excellent

@HaseebElectronics Жыл бұрын

best regards

@gacherumburu9958 11 ай бұрын

👍👍

@kemalkurt5257 Жыл бұрын

Nice video sir. Is this power supply uses single switch forward topology because there is a large inductor at the output and 250 watt is beyond limits of flyback converter i think

@mawulisallah7331 10 ай бұрын

Boss, pls thank you for the good work you are doing, am one of your student who have watching and learning from your videos. Pls will I get the socker tool you used to pull components on the board from you to buy?. Thank you very much you really appreciate you videos.

@gamiwv Жыл бұрын

Often I'm also using my mobile phone as magnification glass . Nice use !!!

@HaseebElectronics Жыл бұрын

i am using it since long. it is much easier than the bench magnifier or handheld magnifier. this app is really awesome play.google.com/store/apps/details?id=com.jkfantasy.camera.jkpmagnifiercamera

@Bozatli Жыл бұрын

👍

@mithileshelectronics4867 Жыл бұрын

Sir please regenerative SMPS ke bare me video bnaiye

@parthchudasama9750 Жыл бұрын

Discharging kit kese bnate he sir please video bnaiye

@HaseebElectronics Жыл бұрын

please check video number 885 kzfaq.info/get/bejne/i7BiobyDvtiRg3U.html

@parthchudasama9750 Жыл бұрын

@@HaseebElectronics thanks sir

@JAMSHIDMOBILELAB Жыл бұрын

Good job 👍🏻

@HaseebElectronics Жыл бұрын

thanks a lot

@jaym5938 Жыл бұрын

Bravo!!

@HaseebElectronics Жыл бұрын

best regards

@manisuresh7008 Жыл бұрын

Thank you very much sir 👍

@HaseebElectronics Жыл бұрын

it is my pleasure

@HaseebElectronics Жыл бұрын

it is my pleasure

@ankur0077nca Ай бұрын

What type of smps is this feedback forward or half bridge ( asking as it has 2 400 v bulk capacit0r)

@susantaatha6468 Жыл бұрын

Excellent

@HaseebElectronics Жыл бұрын

best regards

@roomrong Жыл бұрын

Hello sir please make a video on safety regarding electronics repairing.

@ehtishamsiddiqui7332 Жыл бұрын

I want to know one thing if u can tell me , Does IGBT inverter welding machine use input line filter i mean common mode choke and X Y capacitors ???

@HaseebElectronics Жыл бұрын

in some brands there are class Y capacitors, otherwise most of the brands have soft starter circuit

@zahreddinezairi7363 Жыл бұрын

Salem PLZ make a video ho to modified ATX to adjust current (control current range) THANK YOU.

@fatih81 Жыл бұрын

Teşekkürler güzel paylaşım

@HaseebElectronics Жыл бұрын

en hoş canım

@md.mahfuzurrahmanmahfuz9348 7 ай бұрын

@@HaseebElectronics MMA 300 IGBT WELDING MACHINE AGAIN AND AGAIN CUT IGBT 40N60. PLEASE BOSS HELP ME HOW TO SOLVE?

@MY-ms2zx 3 ай бұрын

ob2273 koi alternative?

@nuritepegoz6042 Жыл бұрын

çok teşekürler ederim altyazı açıldı

@HaseebElectronics Жыл бұрын

En iyi dileklerimle

@thankyou7741 Жыл бұрын

is it safe to measure the volatage at drain to source in DC mode of digital multimeter? or at the transformer?

@HaseebElectronics Жыл бұрын

yes at drain to source of mosfet, or across RCD snubber diode, it is safe to test voltage in DC mode. but testing in AC mode, it can damage multimeter or power supply, because the internal capacitor of multimeter provides very low capacitive reactance at high switching frequency

@skyvalex8770 Жыл бұрын

good I have a 12v 10A smpa like this , and on load it turn off ... means pwm ic is defective?

@HaseebElectronics Жыл бұрын

it seems that its current mode error amplifier is to be checked. this ic is driving in over load protection if there is tl494 or ka3525 then check there is some transistor is connected at pin 15 or 16. so monitor pin 15, 16 and its related circuit in case of sg3525 might be pin 1, 2 or its related circuit

@skyvalex8770 Жыл бұрын

@@HaseebElectronics its it tl494 ic circuit , thank you brother I watch your video to learn and dix myself, you are the best tutor for me , thanks again

@HaseebElectronics Жыл бұрын

most welcome dear brother 💝

@andreyace8768 Жыл бұрын

👍👍👍👍👍!!!

@HaseebElectronics Жыл бұрын

best regards

@W1RMD Жыл бұрын

Thanks! Great job with diagnosing and repair. It should be noted that you should use an IC soldering iron like you have or an IC soldering iron that's isolated. Some IC'S cannot handle the high static voltage that some cheaper irons may have. I've gotten away with it with the IC's I've soldered, but I heard it mentioned on another video how much voltage can be on the tip sometimes. Have a great weekend sir!

@HaseebElectronics Жыл бұрын

best regards yes unsafe ESD based rework tools damage CMOS based components. because ESD sensitive parts damage immediately when there are exposed to any electrostatic charge, even placing in unsafe electrostatic charge area destroys CMOS based components

@zarzarel1910 Жыл бұрын

My station, the Gordak 936A has "ESD SAFE" written on it..many don't have a very good opinion of Gordak tools...can I use it to unsolder a CMOS from a PC motherboard? Thanks for the heads up the potential destruction of IC from this point of view

@foxmolder6408 Жыл бұрын

The Soldering Station used by YOU must be serviceable and must be grounded ! it is important to check the presence of grounding PE wires (YELLOW-GREEN) and their connection to the GROUNDING circuit in the sockets from which you power your repairman's equipment, it is also recommended to use an ESD bracelet on your hand, but such measures are necessary when repairing POWER SUPPLY units

@user-kf3ii6in7h 4 ай бұрын

I have a 24-volt, 1500-watt power supply same as this that barely gives a current of 26 amps. After that, it disconnects when the load increases. I replaced the capacitors, and knowing that the transformer coil is made of copper, I could not find any problem. Can you explain how to increase the current and the possible causes of this fault. With thanks and appreciation

@JayWye52 3 ай бұрын

some over-current protection circuit problem? a current limiter that's limiting much too low? perhaps a resistor in the sensing circuit that's changed in value. 1500 watts at 24v is a lot of power. switching transformers are about the last component to fail.

@mfayazpk 7 ай бұрын

Please share the list of tools you have

@nayanjagirdar8408 Жыл бұрын

👌👌👌👍

@HaseebElectronics Жыл бұрын

it is my pleasure

@jitmehra952 Жыл бұрын

Sir required DC to DC boost converter has sort circuit protection and overload protection circuit diagram

@lokmangoksal7970 6 ай бұрын

🧿

@kyawmyintnaing1 4 ай бұрын

what is the difference between Vcc and Vdd and reference Sir?

@dhanuskalankathilaka Жыл бұрын

💯🌼👌

@phornya4293 8 күн бұрын

How to know the value of burnt resistor?

@muhammadwaqasmuhammadwaqas2925 10 ай бұрын

وعلیکم السلام

@pit3835 11 ай бұрын

whats the name of the gun. ? not an ordinary

@HaseebElectronics 11 ай бұрын

it is WELLER WR3M rework station

@pit3835 11 ай бұрын

Thank you for the info..

@directsystems2225 Жыл бұрын

If drain to source voltage is not present 326v and is only 240v at drain to source , but main capacitor has 326v . What could be the problem, ?

@M.lababidi 4 ай бұрын

السلام عليكم أخي الكريم، i have a Power supply 24 volts, there is no current on the outlet. There is 24 volts, but there is no amp... What is the solution, please?

@pekertimulia125 11 ай бұрын

Ember luar bukan tutup satu

@foxmolder6408 Жыл бұрын

He question "why the chip died" has NOT been CLARIFIED by the master!! the 283x/384x chip series is reliable, and simply DOES NOT BURN for no reason!, the cause of the breakdown is not clear!!! so there may be a REPLAY SOON!!! a common reason for chip failure is bad capacitors in its strapping -they should always be changed even if they seem to be alive! When checking the capacitor in in an pulse source AC/DC DC\DC, it is important to control not only the capacity of the Equivalent Series Resistance(ESR), bad caps can have a larger ESR with a capacity close to that indicated on the part being checked

@JayWye52 3 ай бұрын

some ICs fail when new,;infant failures",a small number fail later on. ESD can shorten the life of an IC. ESR checkers are very useful for doing a lasting repair. I have one.

@nuritepegoz6042 Жыл бұрын

alt yazı dilleri açarmısınız lütfen

@HaseebElectronics Жыл бұрын

Evet. artık altyazılı izleyebilirsiniz. şimdi youtube'dan açılıyor

@englishrupe01 Жыл бұрын

You can always use the CC auto-translate mode until regular CC's are available. They work pretty well.

@jahangirmurshid5125 Жыл бұрын

What's multimeter name and model number

@x84pav84x 4 ай бұрын

Странная логика у автора. Не имея практического опыта никогда не пытаться ремонтировать силовую электронику. А учиться как? Это всё равно, что учиться ездить на автомобиле, не садясь за руль.

@HaseebElectronics 4 ай бұрын

большое спасибо за достойный комментарий. Вы правы, если у кого-то нет хорошего опыта, он не должен пытаться ремонтировать. Поскольку электрические цепи опасны, глубокие теоретические знания, а также практический опыт позволяют правильно подходить к поиску и устранению неисправностей.