Horrific USB power supply fault. (Electrocution risk.)
ฝัง
- เผยแพร่เมื่อ 3 เม.ย. 2016
- Although I've come across some really dodgy power supplies with poor insulation between the mains and low voltage sides, this is the first one where the USB ports have carried full mains current. (via a rectifier)
It's a Swees QY08-05010 with this model and style carrying various other branding as well. Oddly it does appear to be relatively sensibly designed inside, but this one has a serious manufacturing fault that suggests others from the same run may also pose a risk of serious electric shock.
Sadly, this just reinforces my doubts about the poor separation in many of these small transformers. I'd rather have split bobbin transformers even if it meant efficiency taking a slight hit.
If you enjoy this channel you can help support it with a dollar for cookies, coffee and dangerous power supplies at / bigclive - วิทยาศาสตร์และเทคโนโลยี
I dont mind if your product has a low life expectancy, but please dont make your product lower my life expectancy..
@Kevin Counihan Well, you probably buy a new printer every time it runs out of ink because the ink is so expensive that getting a new printer each time to cheaper
(EDIT: I have more likes than you LOL)
beshj So whats yr expectancy of this post??
beshj I don’t see the problem here, maybe cause i wanna die
I mind either way.
@Kevin Counihan There is stuff you are only going to use rarely so spending more for better quality just doesn't make sense.
"Probably not as dangerous as a power supply, because this looks dangerous and that doesn't."
Love that.
its true
Brilliant analysis. I remember a colleague who designed a transformer for a product I was working on. One day, I saw him carefully unwinding a transformer. I asked what he was up to. "I validated the samples the company sent us, I'm now validating one of the production transformers they sent us to make sure they are to the same standard". Turns out, production samples and production run parts don't always conform to the same specification :) That was 25 years ago, looks like the same holds true now. Shame, because I agree, it looks like they did a good job on the other parts of the build.
..I really like how he talks to us respectful, like we understand everything even though many of us are here to learn like myself.. it adds to the learnig experience with positive thinking.. thanks professor
i know nothing about electrical stuff, but your channel is sooo fun to watch.
agreed.
Same.
i came here to comment the same thing
ASMR for tech.
Artyom Platonev yes even i dont know any electrics
It could be a feature, it charges your phone, and then charges you when you are ready to get your phone.
makes sure u know its charged
+Razor2048 Imagine someone plugging a vibrator to that thing.
Razor2048 in solviet Russia, phone charges you!
This would actually destroy your phone, then destroy you.
As long as it doesn't charge my savings account, it's all good.
Dual purpose device for charging and electrotherapy lol
You may wan't to discharge the large capacitor there before you touch any part underneath or you may get free electrotherapy lmao
may be also used for diy electric chair executions :D
I can't find anything funny about this, this thing is dangerous
@@maw9406 make em ride the lightning lol
Mike Pence joined the chat
15:53 Very pleased to see your mighty beard getting involved there.
+Nostalgia Nerd yes when you see that you know shit got serious!.
Praise the beard
Haha, I first noticed it at 14:45, and i'm glad to see someone else pointing it out. Even if it was 4 years ago.
It was 2016 when the beard first made it's appearance at an unexpected camera angle. Since then youtube viewers have been competing through the use of time stamps on who is the mightier beard spotter. For those who master this skill are destined for the highest of honours on youtube. Those of course grow a glorious beard of their own, electronics get taken apart on camera. The cycle continues.
I think this is the rare case where china actualy under rates the output of a device. This company is just to modest.
+Sirus haha
Instant phone charger with handwarming built in.
+IT'S TIME TO STOP And features _near-death_ experience functionality.
Matheus Moreira Sounds shocking.
Or like their "5mw" green lasers, which are more akin to 30mw get blind fast tools.
CSI: Clive's Serious Investigation, exposing shocking events!!!!
I give up! Here. Take my like.
+James Lamb I read that in his voice!
May I humbly suggest that no CSI: Anything episode I've ever seen has been anywhere as interesting for me as this fault hunt. Enjoyed it very much!
Attila Asztalos you MUST.
Hahahah! :D
high end looking product..
quality looking circuit..
faulty transformer..
really?
Yup, kinda surprising, but then again not surprising.
+Benjamin “Ozias” Esposti
yeah, but they made such an effort to build a high quality brand and it gets fucked by one single fucking copper cable?
Hilarious! xD
It's that one in a million manufacture error. Probably from the factory that made the transformer itself, could even be an entire bad batch.
shit happens
They actually didn't make an effort. "Effort" would include, as part of quality control, checking to see if the whole thing was live. Design, components, and even assembly are not what you mostly pay for when you get a "premium" product, it's quality control. (Of course what you MOSTLY pay for is branding but quality control is a way of protecting the brand name so it gets done.)
"You damaged your product. Your warranty has been violated." - chinese seller on Aliexpress about this video
The usual response is " you received a defective produce but you must pay to ship it back to us. If you leave the product a positive review , then we will refund you the price of the product without having to ship it back"
@@franksnowboarder That's when you edit it to a negative one.
That's a pretty glamorous knife you have there.
Not, it's a ripper (Apologies to UK folks) that's what it's called I'm US for ripping open boxes ( or tape on boxes) etc
Thank you for NOT cutting the video short, your suspicions are confirmed!
Sir, I know little about electronics but your presentation is so well done that I found myself following along quite well. You explain things in details easily understood even by a novice. If you haven't thought about it and looking for a revenue stream I'd suggest calling local litigators and offering your services as an expert in the field for testimony. Having many lawyers in my family I know how valuable these experts are.
+Michael Lederman agree wholeheartedly man :)
Do a Louis Rossman and offer testimony at federal level.
In case he gets mitigated by the trans migration of souls?
Of course, any job has plus and minus ( lol, positive and negative, cathode and anode)
To 'expert withess' deoends on which side is gonna win, and who may hate you for testifying
I love the understatement of the year, "A wee bit dangerous"... If the amperage is high enough, and the mains certainly qualify, it's potentially lethal!
Wow, well, you called It Clive, you fucking called it. It's finally happened, a mains output USB charger.
You can tell something's off when even a non-electrician knows it looks wrong.
+Akaishi well it doesn't take much, anybody knows if it makes your arms contract and you feel 50Hz 240V it's a problem
+Joshua Nicoll
The high voltage means you need less current for the same power, so if this supply provides a half-amp it will charge your phone battery 20 times as fast!!
.
.
.
.
(sarcasm)
+Maanuueel42 \m/(^_^) Absolutely, first we had Qualcomms fast charge with 9v@1.6a, now we have 240v@13a, it will definitely charge your devices much much faster, and blow them up for free if their charge circuity is bad, so it's a win win.
Joshua Nicoll So it automatically sorts out the bad ones? Nice! xD
Cool teardown Clive. And thanks to the guy for sending it in (I'm also I'm glad you're unharmed). The few times I have had a belt from mains electricity has taught me not to take everything for granted.
This was the first Big Clive video that I ever viewed. Been a fan ever since.
Mine too!
I am new to electronics and have been watching your videos for a while now. This is the first one that I was glued to the screen. rewinding and pausing the whole time trying to see what the issue was. I have been meaning to say thanks for a while for your information and videos. I have learned a lot from you and others but you bring a lot of entertainment along with it. I'm from Connecticut, US. Thank you from here.
For some reason seeing you slicing the paper off the transformer was oddly satisfying.
+JohnathanPlays cut towards your chum, not towards your thumb
+MattOGormanSmith and chum isn't a euphamism for dangly bits
Weirdo
The thing actually fed live 230V through the USB ports? That "cheap pink USB charger from china" song (or whatever it was called) that Clive made certainly comes to mind...
+Redhotsmasher tingled slightly!
Nick Bruce
I would imagine it did, LOL.
+Nick Bruce Glad you discovered it without being lethally shocked !
I love watching you work. It's like watching my buddy's dad work who's also an electronics engineer (retired from Delco). It's like each one of your fingers is it's own individual arm...
Cut to view of beard full of bits of yellow tape.
Thanks again Clive, very entertaining video. Didn't quite know exactly how close to death I was but glad to be shot of it!
+Nick Bruce
Thanks for donating it to clive nick :-D
A very interesting dissasembly by the master of fun, clive :-D
+Nick Bruce Nick, Do you have any video of either the shower of sparks or the look on your face whilst being shocked? You are a much tougher man than I. Thank you for your sacrifice. We're all glad you survived.
+David Null no videos unfortunately! however i can say i was rather surprised to have nearly punched myself in the face from the muscle contraction on the shock, and the shower of sparks evoked a rather loud scream from my other half!
It might have killed you, not 100% sure...
Why didn't it trip the RCD?
Why would 37 people dislike this? Do they work at the transformer factory?
+Phillip Parr Maybe they weren't impressed that Clive took the transformer out without first identifying which legs were shorted.
+Phillip Parr I currently read 62 dislikes on my screen. This is why you don't make that kind of comment, it makes you look stupid..
+xl not as stupid as failing to understand the concept of the passage of time
+Phillip Parr The dislikers are paid by the USB Charging pack Manufacturers anti-defamation league.
Phillip Parr Some men just wanted to see that supply burn.
These analysis videos of yours where you just try to find where the fault lies and your thoughts about it are some of my favourite videos 😊 love a good puzzle and your methods of investigation!
had a good chuckle when you felt the need to shout "sorry!" to your hypothetical neighbors that were disturbed. Sooo British I love it
This is better than those dime a dozen reality tv, pawnshop-vision crap Discovery channel tries to push
polityka nazw im Rick Harrison and this is not my pawn shop although the channel makes me say it is
james gregory I'll give you -0.02 shekels
@@FlatBroke612 he's taking a risk with that
I'd be really interested to see you teardown some Anker gear. I have always found they work well and the build quality is good, but I've never seen inside any of them.
I like how you don't skip to key points and show us the whole investigation. I do watch videos that are quick and dirty but sometimes it's nice to sit back and watch a nice long, detailed autopsy.
Lord the way you cut toward you... too brave!
I have no idea what you talk about in these videos because I'm hardly an electrician, I hardly know anything about electrical besides the basic plug wiring and ohms law... However, I am deeply interested in your videos and have been subscribed for a while. Keep it up! :)
+Meteor Shower Don't worry, it'll all start making sense after a while. In the meantime, enjoy the ride.
bigclivedotcom haha cheers bud, I'll keep watching for as long as it takes.
+Meteor Shower eevblog has some interesting videos, mainly the older ones. The newer content generally less practical.
+Meteor Shower After watching his explanations on power converters for a while,it all fell into place. I have been tearing stuff apart now for years,and really didnt understand how you could step down outlet power to just enough to satisfy a usb charger. Now I know what everything is and why it does what it does. watch his video on electronic components helps a lot. of course it makes you order electronic do it yourself kits, a soldering station,leds,capacitors,and diodes as well as other fun stuff. like breadboards,an oscilloscope electrical testors and all the other goodies,like me.
I understand about 80% of it.
Clive, will you follow me around and narrate my life please?
Me: Tightening a bolt. Clive: "Hmm, I wonder how far in that'll go... Let's find out!" 😭💯🤣
His voice is on the level of Morgan Freeman in my mind.
I can't tell you how enjoyable it is for me to hear your voice with your accent describing electronics issues and theory. Greetings from Canada, keep up the good work!
Clives Channel: 98% of people here enjoy either the destruction of electronic devices, or like his voice, the other 2% are probably other electricians :P
+DJMoneyDick I don't think an electrician would be able to follow this, unless he was also an electronics technician or engineer. Does happen, one of my field engineers became an electrician because it pays better and I was surprised to find the plumber I was guarding at a defense consultancy was a radar systems engineer like me. I asked why, he asked where I keep my yacht. He kept his at Hamble Point, I have never made that sort of money.
cageordie FOUND THE ELECTRICIAN. Boy, relax, I was generalizing, and I thought it was pretty accurate.
+DJMoneyDick Turns out you were absolutely right anyway. He's just a lot better than any electrician I ever worked with.
sometimes i do question myself what am I doing here at 4am watching 30min of a fault hunt but then again it was pretty good.
i swear if i never see yellow tape again, i'll die a happy man
This has convinced me it is time to invest in a USB tester with digital read-out, and a mains socket tester incorporating lights. Your investigations are extremely fascinating, and I would add, in many cases, life saving. Well done!
Always a pleasant end to the day when Clive derogatorily analyses a dodgy Chinese appliance for our entertainment. Thanks, big man!
I must say, Clive, I admire your thoroughness and dogged determination along with your calm analytical narrative style. It's as though you're investigating with us instead of merely lecturing us.
+Greg Wolking I fully agree with your comment !
+Greg Wolking I like to think we ARE all doing it together. With you guys in the workshop looking over my shoulder.
We are so proud of this product.
Lol
Lol
lol
lol
lol
If you ever come with a similar fault in the future you might consider using a razor blade or a scalpel to cut the pcb traces going to the secondary one by one. That way you could identify the exact windings that are short circuit. Only then remove the transformer and you will know where to look, even if the fault disappears. Enjoy your teardowns, excellent work. Cheers.
I'm studying electrical engg now, but coursework makes it really easy to just get lost in the math. It's thanks to you (I also enjoy EEVblog!) to help reignite the practical joy of EE!
Got notification on phone for new Clive video. Keywords jump to my eyes. "Horrific", "fault", "electrocution".
....oh this gon be good.
That really is too bad. They even used polymer caps on the output, where you pointed out where they are next to the heatsink. They will have a much longer life expectancy in such a situation than electrolytic caps. So, they tried and it isnt a bottom dollar design.It just looks like whatever machine was wrapping that transformer maybe had some protrusion or something?
+Clyne Griffon I was wondering if it was maybe a soldering iron tip brushing across? hard to tell
@Christine Felice not at all, if the winding machine wasn't defective this would not have happened. Regardless it's probably one of those 1 in a million manufacturing errors.
@@sergiofreitas9368 if they had the windings on seperate bobbins there would be no risk of this happening.
@@internetguy1260 They used to do this with the old E/I core ones, but as he mentioned, it does take a hit in efficiency... and quite a large one too (about 20% from memory)
@@steved2136 it's the struggle or modern society! Efficiency, or safety? Hah!
Surely ... Clive Scene Investigation !!! Thorough, informative, and oddly fascinating :-) Thank you Clive!!
I was an electronic tech and worked for engineering for 11 years. After I watch your videos I started dissecting everything I sell now looking for bad quality.
"AvE would be proud of me here" ahah love it
+ㅤㅤㅤ Yup, channelling AvE is always good. But you've got to do it right. That stanley locking knife. As Our Great Canadian Hero AvE would say, "Cut towards your chum, not your thumb"
(although at least Clive has decent focus control)
+Beany2007FTW No focus at all in fact.
bigclivedotcom Fixed focus on the iPad? I thought it had AF? Or just disabled?
God, what a dull question, eh?
+Beany2007FTW It appears to be fixed focus which is why I can't get too near the lens with stuff. That said, the fixed focus keeps most of the stuff clear without any annoying focus hunting.
Or a lack of what our canuck chum would describe as
"Foooocuuuus yooou fuuuuuuuuuuu-"
they are now advertising these as having an any theft feature you touch my iPad and you die.
When Big Clive goes to find Waldo, he doesn't just find him, he finds his whole family, his friends, dog, and all the places they have been in last year.
"probably got some filtering if it's got any quality at all", is now on the list of favorite quotes when troubleshooting deadly electronic fails.
You're right BigClive, we want you to show us everything.
Any chance you could do a teardown of one of the Anker Chargers of this style?
I've always had trouble with understanding wiring diagrams to an extent but you make it look so easy.
+richie boucher It all falls into place the more you do it.
Greetings from the ever so hot Mohave Desert! I have one of those deals hanging from an outlet in our RV charging most all my chargeable crap. It has done a nice job for the past 3 years, so perhaps I got a good one, or just got lucky. Thanks for the video, I always enjoy your atopsy of dead or dying electriconic devices. Learn a lo from your channel, just wish you had more time to make more vides each week so I could learn faster.
Thanks a million for the great education, and for keeping my intrest in electronics on the cutting edge. My good wife of 48 years wanted me to pass on her thanks for putting me to sleep so she can play her games on her machine, for when I am asleep, my computer is pretty much still, and the internet is all hers! Your soothing voice has a tenancy to make a fellow nod off if he isn’t paying close attention.
The quality of that unit actually looks pretty good. Its a shame that a single component failure inside could kill you!
returning to amazon. "slightly used". xD
Haven't a clue about how these things work but I still found myself glued to this video, eager for what the autopsy revealed. Just subscribed :)
Always fascinating to watch your autopsies and experimental circuit builds. Takes me back to highschool
Watched this one all to the end conclusion. Loved it,reminded me of when I used to unwind electro speaker magnet coils from old valve radios hoping that that break was just under the surface and the Yussss when it was!
If you were in Canada, saying CSA would have been totally fine, since it is the Canadian Standards Association, which certifies electrical products.
It's CSI, not CSA
+mizish did you even read his comment? xD
@mizish It disturbs me that you didn't read the comment and missed something so obvious, i would NEVER ALLOW YOU TO OPERATE A VEHICLE or be in charge of ANYONE faculties in ANY MANNER, or even be a fucking FRY COOK LOL!!
They actually (the CSA) certify all kinds of products in the US as well. We do have UL, but the US is highly dependent on the opinion of the CSA
I can shit in a can and put CSA certified stamp on it and sell it to some one. Is it CSA tested? No! But it says so because of the stamp. Chinese can put everything on the products/packages because of the lack of rules there and also the reason they can copy products and make poor components. Do you understand? Can you read this? English m f
Congratulations Sir.
I have a PhD in electrical engineering, an ex-wife and three children with degrees in electrical engineering. I wish I was half the engineer you are.
I didn't know that I needed this kind of video in my life...
That was enthralling. I was fullscreen and still found myself leaning towards the screen. Thanks!
AvE would indeed be proud of you breaking it open lol!
Curley_7981 @AvE I’m sure he did. If it’s broke ya can’t break it no more.
Congrats on 100k subs clive!
Watching you unspool strips of tape is extremely satisfying for some reason.
Clive, always enjoy your vids. Love to see a guy with experience go through these things :)
I actually enjoy the struggle to bust things open.
Superb analysis!!! Quite simply excellent.
Fantastic video. Wish I would have found your channel a long time ago because every video is a learning experience. Please keep doing what you're doing, because you are a real asset to TH-cam!
Comes with a hand warmer, instant phone charging, adrenaline fueling lethality, and probably a fireworks show as a send off when you do eventually touch it. 10/10 product
Well done Clive - for saving lives!
"Morbidly fascinating"
I LIKE a man that works safe...sharp knives cutting towards oneself...live power via wires and a light bulb..
I really like your videos ... and I love the problem solving process you take during the investigation.
At the point where you removed the transformer and lost the fault, wouldn't a megger check have been prudent, as it would probably have broken down the insulation again? Great videos, Clive, keep up the good work.
In Canada we have a CSA which may actually do just what you did. The Canadian Standards Association does product safety testing, like UL.
+tesla500 We have the EC.
+tesla500 - UL, CSA, CE and other safety laboratory markings on Chinese electrical goods are meaningless, especially on no-brand and obscure brand products. Some years ago, while returning a load of malfunctioning 4-foot fluorescent shop lights to my local Home Depot store, I had a chance encounter with a fellow who moonlighted in the electrical department after his main job at Underwriters Laboratories. He told me that it was not uncommon for the Chinese to affix fake hologram "UL" stickers to their goods when they had never submitted such goods to the laboratory for testing in the first place.
+Milosz Ostrow Sadly true. The Chinese simply copy everything including markings.
Thankfully knockoff factories are no better at copying the relevant markings than they are at copying appliances so a close inspection of the marking can show whether it is fake or not. In the UK the CE mark is the first thing I look for on a device because it will either be crystal clear as though it was finely scribed by a small inkjet printer during the manufacturing process or it will look just like a blurry stamp as though that is exactly what someone did, just stamped the casing by hand after they've assembled it.
Any professionally made device or appliance will have professionally applied markings and labels.
I saw a thing on TV a few years ago where the Chinese had invented a standard called "China Export". The logo of this was almost indistinguishable from the CE logo! www.icomuk.co.uk/News_Article/3794/17103/
I like the pace and the genuine troubleshooting of this video.
Absolutely love what you are doing. I never miss any of your videos.
I don't normally like these types of channels but you got a new sub :) like how you explain everything as you go.
You can spend numerous hours designing and laying out a proper SMPS with the best engineers just to have it all killed by penny pinching part pickers without your knowledge
also i may add that that adhesive foam on the bottom is BAD ... its not conductive but it will track fairly well, carbonize and short after some time ... especially if any contaminates got under it ... if you have to use one place it on the LV side to prevent tracking or place the adhesive side on the case it self
Idk if I’m just to high or too stupid, but this is an insane level of understanding of components. I really have absolutely no knowledge in this subject but it’s entertaining as hell to watch you go detective on this ass!
Just had a movie starting on the other tab and while you were unwinding the tape, the Columbia-Jingle started and I thought: Wow, now the magic happens!
why was i recommended this and why did i watch the whole 28 minutes of it?
seventeesweremagic What a nice comment! And i found it entertaining
Because you were enchanted by Clives voice and accent
Because this is the best channel on TH-cam
You tube knows you better than you do. Scary....
You stopped watching 20 seconds before it ended?
Hi, Clive. Great video as always. Must point out out that under safety testing there must be creepage and clearance distances between primary and secondary circuits. I did see holes in the PCB usually to increase creepage distances, however putting a foam sticker over them will cancel the reason for the holes reducing the creepage again. Also if this foam is hygroscopic would fail the flash test after the humidity test.
Yes, and normally those components providing the isolation would be 3rd party tested and approved per the requirements of the LVD supported by EN/IEC 60335 or 60950.
Also the conformance testing of the product after manufacture should have picked up the defect, but then of course CE means China Export to them😡
not something that would normally interest me being that I'm more on the network administration side, rather than the engineering domain, but your videos truly fascinate me. I've subscribed as a result
Big Clive Mitchell is likely one of the most dexterous humans on the planet! It's like he has a built-in "Helping Hands" tool attached to each set of fingers. I've never seen anyone handle so many small intricately positioned items at one time, with such astonishing speed and accuracy. When I try to do shit like that, I end up with burnt or cut fingers. Amazing.
Nick is lucky to still be with us...
+LakeNipissing too right!
+Nick Bruce Maybe Clive or Nick should make Amazon aware of this hazard, with a link to this video which is very good evidence of this one having an assembly QC fault, which could be lethal.
Unfortunately the original listing has disappeared, along with the order history record. There are a few others under the same part number, i wonder if the PCB has an OEM name on it?
"Next-life expectancy" LOL!
Near-death experience!
Have you every considered doing somewhat of a tutorial series, or a video like this where you go in depth on what the terms that you say mean to help let other people who don't know what is going on in the video to learn. Loving the vids!
I have no knowledge of electronic components or how they work but I've been watching your videos for years
How does having the transformer after the bridge rectifier work? I thought transformers required AC to function?
+trainmeditations Switchmode power supplies convert the incoming mains to DC and then back to AC again at high frequency so they can use smaller transformers.
^^^
(TH-cam is broken and I can't tag people, but I'm adding on to what bigclive said)
Yep, and the fact that it operates at a high frequency allows the power supply output to be regulated as well. This significantly increases efficiency, since otherwise you'd need a linear regulator which can give off a LOT of heat.
Thanks guys, that actually helps me understand. I guess I'll look into why smaller transformers can be used for higher frequency
Transformer, you are the weakest link. Goodbye!
“Fun a a dark sort of way” this is why I love watching!
"Probably not so dangerous as the power supply, because this looks dangerous but that doesn't". Brilliant and so true, when something looks dangerous you apply 'proceed with care' by default, when it doesn't... well you get shocked.
It seems well designed, but had an accident during manufacturing.
I really don't know why I keep ending up here, but at least your videos are interesting.
I don't understand the technical stuff, but i like it when you open things up
Yes, please NEVER cut your video short and go right to the problem(punch). For that would not be a good through CSI technique. Seeing the complete disassemble reinforces the theory to application. Plus, that wouldn't give me enough time to finish my morning coffee. As always, really appreciate your efforts!!!