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

[@electroniquepassion]

Good 👍👏👋

[@HaseebElectronics]

thanks a lot

[@miloradgraovac74]

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

[@ervinsz]

Nice explanation, no theory, just pure practice!

[@HaseebElectronics]

it is my pleasure

[@ugtechnicalyoutubechannel6780]

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

[@SteveBagdasar]

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

[@HaseebElectronics]

best regards

[@rodneygoeiman4433]

Hi Haseeb I find the tutorials informative

[@chandanaaelectricalsservic7307]

good practical working information sir, very good 👍.

[@user-zg3nb1mk5b26]

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.

[@fuzzs8970]

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

[@HaseebElectronics]

please accept my best regards 💕

[@renantejosesiguiente1442]

Thanks for the walk through trouble shooting😊

[@anatoliynikolov8771]

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

[@HaseebElectronics]

You are welcome!

[@jetroompoc3736]

WAtching from philippines..

[@HaseebElectronics]

most welcome

[@jcsudeshchannel8224]

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]

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

[@vijayakumarkumar9190]

Very good and useful information thanks for sharing this knowledge

[@HaseebElectronics]

best regards

[@dzabakwesi2213]

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

[@AbdulMomenZargar60]

Subha Ka Salaam Janab Bhai Sahib

[@HaseebElectronics]

wa alaikum salaam bhai sahab

[@rapsrandom2051]

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

[@TheWickerShireProject]

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

[@rameshank.r6474]

Excellent Sir, Nice Explanation,waiting for more videos

[@ahmadsaki5451]

احسنت بارك الله فيك

[@bobtee7899]

you Da man Haseeb😀

[@arunkumar-bh2dp]

very clear explanation for troubleshooting the smps

[@HaseebElectronics]

best regards

[@zokim9733]

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

[@HaseebElectronics]

thanks a lot

[@mehmetnejdetyazgan7137]

Thank you

[@HaseebElectronics]

You're welcome

[@cranegantry868]

Nice job of fault finding.

[@HaseebElectronics]

it is my pleasure

[@cranegantry868]

@@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]

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

[@georgenicholas5210]

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]

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.

[@gauripartapshanker9197]

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

[@HaseebElectronics]

thanks a lot dear brother

[@hackerlabs1827]

Well done 👏👏👍

[@Trucam2020]

Excellent video and repair.

[@HaseebElectronics]

it is my pleasure

[@1kimdotcom]

Excellent tutorial

[@mohamedniyaz7530]

Explanation v clear with advise

[@HaseebElectronics]

best regards

[@alexp2011a]

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

[@mr.gathuru828]

Thank you Professor for enlightening us

[@HaseebElectronics]

My pleasure

[@antiamperak]

Výborná práce dobře vysvětleno jak vyměnit IC.

[@HaseebElectronics]

je mi potěšením. pozdraví

[@rohanranjandesilva465]

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

[@HaseebElectronics]

it is my pleasure

[@Edmorbus]

Keep up the good work and thanks for sharing

[@HaseebElectronics]

best regards

[@weiaungweiaung]

ကောင်ပါတယ်ဆရာ👍👍👍

[@HaseebElectronics]

ကြိုဆိုပါတယ် ချစ်ညီလေး

[@kennedymutale5277]

Great work thank you

[@HaseebElectronics]

best regards

[@stevenA44]

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

[@HaseebElectronics]

You can

[@arun.karekar]

Always good hand....

[@HaseebElectronics]

best regards

[@Abdallah.795]

Thanks a lot learned from it❤

[@JAMSHIDMOBILELAB]

Good job 👍🏻

[@HaseebElectronics]

thanks a lot

[@niranjanmajhi129]

Nice explain sir

[@HaseebElectronics]

it is my pleasure

[@manisuresh7008]

Thank you very much sir 👍

[@HaseebElectronics]

it is my pleasure

[@HaseebElectronics]

it is my pleasure

[@ashenafielcho4181]

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

[@mahmoodh7767]

Perfect 👌👌👍👍🙏🙏💟💟

[@rectify2003]

Good Fix 👍

[@globalengineer8190]

Thank you so much

[@HaseebElectronics]

You're most welcome

[@Bibekanandaroy-tn5jm]

Many many thanks sir

[@FUNIXID]

at minuets: 15:14 wow 👌 excellent

[@HaseebElectronics]

best regards

[@Solder_it]

Thank you!

[@HaseebElectronics]

You're welcome!

[@parthchudasama9750]

Discharging kit kese bnate he sir please video bnaiye

[@HaseebElectronics]

please check video number 885 kzbin.info/www/bejne/i3uVn4yIjtdgiaM

[@parthchudasama9750]

@@HaseebElectronics thanks sir

[@fatih81]

Teşekkürler güzel paylaşım

[@HaseebElectronics]

en hoş canım

[@md.mahfuzurrahmanmahfuz9348]

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

[@nuritepegoz6042]

çok teşekürler ederim altyazı açıldı

[@HaseebElectronics]

En iyi dileklerimle

[@baghdadiabdellatif1581]

Great work

[@HaseebElectronics]

best regards 💕

[@arun.karekar]

Thanks sir ji....

[@HaseebElectronics]

it is my pleasure

[@susantaatha6468]

Excellent

[@HaseebElectronics]

best regards

[@startrek416]

very useful

[@HaseebElectronics]

it is my pleasure

[@usamaghanem975]

Very good

[@HaseebElectronics]

best regards

[@MY-ms2zx]

ob2273 koi alternative?

[@thankyou7741]

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

[@HaseebElectronics]

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

[@mithileshelectronics4867]

Sir please regenerative SMPS ke bare me video bnaiye

[@ahmedsoffy581]

nice work

[@blooddy4]

greate viedeo

[@HaseebElectronics]

thanks a lot

[@AdlerNicolas-l1l]

Good learning Video

[@ehtishamsiddiqui7332]

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]

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

[@hlenganimathebula487]

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

[@mawulisallah7331]

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.

[@jaym5938]

Bravo!!

[@HaseebElectronics]

best regards

[@peterfong2241]

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 !!

[@W1RMD]

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]

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]

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]

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

[@roomrong]

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

[@aliemlek]

👍👍👌👌

[@callishandy8133]

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 ...

[@mfayazpk]

Please share the list of tools you have

[@skyvalex8770]

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

[@HaseebElectronics]

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]

@@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]

most welcome dear brother 💝

[@gamiwv]

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

[@HaseebElectronics]

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

[@carlossciangula3455]

bien, un detalle hay que cambiar los capacitores electroliticos en el oscilador por precaucion, aveces esa es la causa principal ,

[@kemalkurt5257]

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

[@pit3835]

whats the name of the gun. ? not an ordinary

[@HaseebElectronics]

it is WELLER WR3M rework station

[@pit3835]

Thank you for the info..

[@nuritepegoz6042]

alt yazı dilleri açarmısınız lütfen

[@HaseebElectronics]

Evet. artık altyazılı izleyebilirsiniz. şimdi youtube'dan açılıyor

[@englishrupe01]

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

[@ankur0077nca]

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

[@zahreddinezairi7363]

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

[@jitmehra952]

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

[@kyawmyintnaing1]

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

[@DavidMG99]

👍👍

[@nayanjagirdar8408]

👌👌👌👍

[@HaseebElectronics]

it is my pleasure

[@andreyace8768]

👍👍👍👍👍!!!

[@HaseebElectronics]

best regards

[@phornya4293]

How to know the value of burnt resistor?

[@Bozatli]

👍

[@kavindajayanath6276]

❤❤❤

[@mehmetnejdetyazgan7137]

Okey

[@Subhan-Allah111]

Please I want scheme of this power supply

[@foxmolder6408]

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]

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.

[@نوفلعبدالحميد]

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]

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.

[@muhammadwaqasmuhammadwaqas2925]

وعلیکم السلام

[@oguztaban5594]

👍👍

[@x84pav84x]

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]

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.

[@jahangirmurshid5125]

What's multimeter name and model number

[@directsystems2225]

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, ?

[@oscarvalenzuela262]

good job thanks..

[@HaseebElectronics]

it is my pleasure