24V 10A 240W power supply - test, failure, teardown and fix 

It's a combination of intellect, dry humour and your English that makes you unique and brilliant! A pair of thumbs up

Your presentation style, your english pronounciation & of course the way you torture the equipment during your testing are unique on you tube. No other youtuber has these qualities. We love you.

Quality job there from the factory, I never realised china had invented the one-legged capacitor... :P

You are absolutely crazy if you have made a schematic to it, even if it had some mistakes... I'm quite impressed of your knowledge and patience, despite from the fact that I've been your regular viewer for over a year... - greetings from Poland! P.s Keep doing what you do! Your cat is absolutely cute! Congrats for 100K subs.

Capacitor gone wild 😂😂😂 Congrats DiodeGoneWild 👍👍 💯 💯

The bleeding resistors on the main caps also act as a voltage divider to make sure the voltage is nicely divided over the capacitors in series.

Thank you, Diode! Congratulations on100K subs! Looking forward to schematic explanation. Especially TL494 working principle.

Always love your explanation about power supply, you had a great experience with huge knowledge in supply and your ckt diagram help me a lot many times, Multimeater, and supply diagram, too

Dane, ty jsi neuvěřitelný - srozumitelné informace i pro absolutního neumětela zábavnou formou, trocha, tedy i více šíleností. Díky za videa.

Finally New video. I Waited for it so much. :)

Congratulations with 100 000 subscribers, DGV. As far as I understand youtube, you are doing the right things. Such as ... uploading regularly. Interesting content. And you put alot of time into your videos. Even if you understand electronics very well, it takes some time to reverse-engineer circuits and draw those schematics that you do.

Excellent video. Congratulations for 100k subscribers! Thank you for your work!

Congrats on 100K

Great video and awesome repair. and congratulations on 100,000 subscribers you deserve all the rewards that come with the hard work you you have put into so many videos.......

Your cat is sooo lovely! Thanks for testing the power supply, btw.

I like your content because of step by step explanation of each part and you uses all conventional stuff for measuring. I'm always waiting for your switching power supply videos. Because it's grate and I learned many things from you. Thank You for those kind of videos.

I cant imagine the time and effort it took to look up and draw that schematic! damn!

That's why I like your channel and watched all your videos. This video was so informative and useful for me. Thank you.

24:42 I can't imagine you made it. 25:17 Still you are underrated. You deserve more. Or maybe only smart people subscribed you. ;)

Thanks for another interesting explanation, you certainly help my knowledge of switch modes ! Congratulations on 100,000 subs, well done, I am working on getting there, I guess I need to do more educational types of videos rather than just repairs and reviews!

Congratulations on reaching 100k subscribers!!! 🎉🎉🎉

Sir, execellent test, fault detection and improvement. Congratulations!

Was beginning to miss your videos. Enjoy your videos very much!

Can you rewind the inductor with copper wire and see what effect that has? Great explanation of the problem.

Thank you so much for your time and Diligence for producing this video.

Outstanding video, love smps videos, congrats for 100k subs!!!

Another very interesting video with a lot of useful info, thanks. That 4.7uF @ 50v was unbelieveable.

Congrats for the 100k subscribers!

Thanks this was one of your best uploads yet. I have a list of things to characterize and test on a similar power supply now. I've been working on a large LED bench light for ages and planned on having temperature and power monitoring. I keep letting too many features creep into the project (clock/room temp/LCD/menus/single button with multiple functions/watchdog timer/etc). I guess I'm still too stupid to "Keep It Simple *." ...anyways...now I want to add mains current sensing to monitor efficiency too ;) Thanks for the upload. -Jake

Congratulations for 100k subscribers

Congratulations for you 100K subs !

U just have to love this guy's accent or what?. And his knowledge is huge.

Congratulations for 100k subscribers!

Waiting so long for this. Just want to buy something and send it to this guy :)).

100k suscribers, bloody well done!!! Your chanel has taken an up-swing, I believe you can become much more popular, especially if you make videos about interesting devices like this PSU for example! You may also want to add a means of contacting you for people that may want to sent you a device to analyze/fix/make a video about! Keep it up!

Great explanation , Congrats on 100K

100K completely insane my friend!

Congratulations on 100K subs!

Thanks for an interesting, informative, and very well structured video

Congrats on 100k subscribers!

100K? Those youtubers are growing so fast T__T. Good luck with 1 million.

Thanks for all the great video's of SMPS's .I have learned quit a bit from you. The fear of working on them has been removed, THANKS

I am absolutely astonished by your power meter made out of a multimeter. It is always convenient to have a small device on hand to check things. Is it possible for you to uncover the working principle and circuitry to all of us? I really love this modification.

Fantastic video, thank you so much for sharing, had not thought about winding an extra winding for the scope, realy nice idea. I have used a little inductor held close to the transformer, coupled to the scope before, to determine if the transformer was switching, that also works, but you dont get the correct waweform, only to determine if it is switching. Looking forward to the explanation video. Greatings form Denmark

I love the way you fixed that transformer soldering iron. I have dozen of these and they seem to be indestructible apart from the threads in the copper bars that give up after tightening couple of times...must try that

Very witty course in working and troubleshooting of SMPS. Very smart man, and he explains very well. He addresses every fact well, and he is not boring. Excellent. BTW, in this lab, the cat should be placed in charge of ESD protection of all MOSFETS.

Thanks mate, I fixed my broken supply thanks to you!

Tak tohle video bylo jedno z nejlepších. To se fakt povedlo. Člověk se i něco naučí. Dík. A víc takových.

Excellent video. I learnt a lot over my first coffee of the day.

Yey many series love your channel

That was an awesome video @diodegonewild I am trying to learn SMPSs and i like how you measure with an oscilloscope without isolation transformer. I would like to see a separate video which focuses on finding failures by measuring with an oscilloscope safely. As always I am looking forward to your and your cats new videos :)

Great vid. Look forward to seeing schematic explanation video.

Analysis and explanation of very high level. Big thanks

You deserve more subscribers:) Keep the great work going here

You're killing me! :-D I've never seen the both capacitor leads in one hole mistake before! :-O

Wow....... I love it ......what an English...so pleasing. Impressing tone you have.

I really love your intonation ! Great job !

You are great 😁👍. You take so much time, to describe everything, so we can understand and going step by step... OFCORSE we can not forget your trusty sidekick THE CAT 😺. Everyone, have amazing day 😎💛

You make great videos. You totally earned all the subs.

i fix my 2 years dead power supply 24v 20amps and now working perfect again i have zero knowledge but this video is perfect thank you for this video !!!

I love how you give the viewers a breath by incorporating your cat into the video

Love your videos. I think you explain and diagnose problems way better than Dave Jones.

In my 45 or so years of dealing with electronics, I have seen some strange situations..but I've never seen anything like that cap situation. LMAO !!!

Congrats on 100k subscribers

Epic analysis. Your very talented.

Very interesting it was good to see they put the suppresion caps and choke in it so often they get left out so at least they got that right! The error with the little cap having both leads in one hole was totally unaceptable I'm guessing they have no quality control congratulations on 100 000 subscribers that must feel awesome. Finally your cat needs her own channel

Thanks for the explanation and the schema.

Excellent stuff. Thank you so much for your time and knowledge :)

I can learn everything I want from you! the halfbridge PSU design is super fascinating, normally in professional PSU's (like a quality TV set) they will be at super high frequency using Litz wire and a smaller capacitor. it is pretty robust that it doesnt explode because one of the transistors died.

Great video, I am looking forward to see your schematic explanation because I have the same power supply in 12v/15A version with problem. I measure 12v on the output with no load connected. When I connect a load It collapsed . I believe your schematic analysis will help me to figure out the fault.

man great video. It was interesting with twists in the plot. Great entertainment. You are the real deal.

18:18 Double penetration 🤣😂. LoL seriooooooooously!

you always bring such a good content, can you please make a detailed video on how to diagnose an SMPS power supply like the one you covered here on this video

this is one of your best videos

I am so glad that your cat is an artist.

U explain much better than our prof. do. Thank U very much

Except for the singsong ;-) I applaud your productions, awesome in every way and highly educational! Keep 'm coming :D

I'll make it clear, I love your videos, mainly because of the amount of information you provide on the subject of the video, it seems to me that there is no lack of details (it must be a little stressful to make videos like this). Maybe one day consider testing a Brazilian power supply that is one of the best in Brazil (brand: Spark Usina), I recently acquired one and wanted to know about its quality and if it is efficient and does not waste a lot of energy due to the power factor.

Excellent! I have one more idea for you to try: that little slope on the primary waveform when transistor turns on is most likely caused by snubber network. It is too agressive, increase R or reduce C. Should be able to gain an additional percent or two for the efficiency.

What makes it a flyback is that when you open it and touch a live part you will fly back

Best videos out there on switch mode stuff.

You are the best teacher ever,thanks my friend❤️❤️❤️❤️❤️

By watching him touch components of an live power supply I assume he's a professional.

You laugh and learn. I love it!!

That's not the worst power supply I've ever seen, but it leaves a lot to desire. You've made a very nice improvement there.

For me You Are crazy 😋. I love wath yours movie about power supply. The knowledge what you are share is huge. Thanks for that. Video is not to long and It contains very high standard. Thanks again and I wish anather 100k or more subs 😁

Velmi zajímavé video. Díky Danyku. 👍

in the first 5 seconds I was sure you were russian... but then I heard how you spoke and I started grinning like I was crazy... subscribed!

An excellent diagnosis. Thanks for the Vid.

Great video, very informative!

Thanks for this great test and teardown with excellent explanation and repair. Its not the first time you see such messy work on chinese electronics. They go for the cheapest workers with little or no experience in electronics and have to work as fast as they can. Probably all done by hand. Still the price is astonishing for the amount of work! Looking forward for the second part. I have nearly the same PSU (12V / 25A) and want to tweak it a little bit. For me output diodes and inductor get the most hot after a while on full load but still o.k.

You are brilliant. Your video is brilliant. Your descriptions are brilliant. Subbed. Thank you for sharing. спасибо.

Great video. I use these for ham radio equipment usually 12 volts 50 amps. I had a 24 volt one to at 25 amps. A couple have gone BANG & they were not being over driven. For the price they're good but some are noisy on radio, some not.

Love seeing your cat in the video !

Man ur genius and funny 😆.keep up the good work , enjoyed watching your video

Wow, good stuff liked and subscribed. Thankyou for sharing.

Love you brother ....very good explanation of smps

I have some reasons to see your videos. Most important, it´s very interesting, it´s easy to learn more about switching power supplies, and further, i like the cat :)

Thank you for the video, really helpful

Wow, you really know your stuff. Plus the soldering gun and the Russian CRT oscilloscope reminds me of my secondary school practice in TV repair shops in what was then Yugoslavia!