12V Power Supply Repair

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Информация о 12V Power Supply Repair

Название	:	12V Power Supply Repair
Продолжительность	:	17.27
Дата публикации	:
Просмотров	:	1,8 jt

It's got a little bit wet I think in burnt out because I can smell the burning on it You can smell it is something wrong I can smell it
Comment from : @stevenhensman2541

any chance you could take a shot at fixing one of those cheap variable power supplies from china? I need one and they keep going out on me Very fragile!!
Comment from : @xIsaacCantu

Wouldn't it be much nicer for the environment if such devices were designed to be unscrewed instead of glued Perhaps we need revised UK legislation on accepting this type of construction, after all it should only put £ pence on the assembly cost There must me tens of thousands of psu's sent to landfill that maybe something as a simple wire fracture
Comment from : @robjenkins9450

Least boring PSR vid I have come across Subbed Lack of waffle/flannel hugely appreciated
Comment from : @jamesward5721

Please determine the electonic parts clearely
Comment from : @user-pt6gk9cf7k

I love these things All "IDENTICALLY DIFFERENT" :) Something new each time It's amazing how so many devices have bypassed the saftey governing bodies, like UL etc Actually, quite un-nerving It's good we don't keep these in our houses - Oh Snap! Thank you for the teardown and ride along You RoCk (even 7 years ago:) ps Outstanding camera work! Cheers from SoCaUSA
Comment from : @ovalwingnut

Nice catch, but I noticed when recording things do not always go right Like that one solder joint It may not be the prettiest, but it works
Comment from : @jonesgang

Thanks Good job
Comment from : @benjielocs8825

Why you don´t search about the cause of the capacitor damage? I'm learning about this Nice technique and nice work done
Comment from : @Charlliex

تشکرزیرنویس فارسی ندارد ؟؟؟؟؟؟؟ اقدام کنید ؟؟؟؟؟🙏🙏👌👌
Comment from : @mohammad45h

Good videos sorry to comment, lot of repeating and going over a point more than required, makes it boring rather than interesting
Comment from : @parmindersagoo2891

you didnt actually show how you found defective device , this video is almost worthless
Comment from : @101markharris

Nice job
Comment from : @bencoss7003

One of the best closed up video of electronics I've seen However no inside ps ac or dc volts or amps measurements or scope waveforms, thanks anyway
Comment from : @10760910eugenioyoutu

ngleskibrbrblah blah blah, a lot of talk about nothing, nothing is explained, very bad
Comment from : @nedeljkooctenjak9690

Are you the famos CS GO Player? JW?
Comment from : @Nikolasz1173

手工差講多過做興趣工難以揾錢老闆不能收留他。
Comment from : @tamsiuwing6546

👍👍👍👍👍👦
Comment from : @mmustapha794

It's a bit hard to understand him How did he begin to suspect the capacitor?
Comment from : @jpvoodoo5522

Sorry to say this but you repeat yourself a lot Also, the process of opening the box is completely pointless It is great to have knowledgeable people like you helping less knowledgeable people like me understand that kind of problem but I would prefer if you would be a bit more 'prepared' and to the point if possible All in all its helpfull
Comment from : @faisletoismeme

Thanks John Do you think the corrosion and deposits could have been caused by electrolyte expelled from the faulty capacitor That seems likely to me
Comment from : @megawatt6430

I enjoyed your video was useful brIf possible, explain about that device (capacity tester)
Comment from : @sasanlibertad134

Your repair video is worthy of my subscription Well done
Comment from : @chef1arjunaidi

👍 Thank's
Comment from : @mmustapha794

Merci pour la vidéo
Comment from : @keupondestroy911

good
Comment from : @practicallab

Time Travelling on YouTube!brbrSomebody spilled a little glue in the case, no worries!
Comment from : @KermitFrazierdotcom

Scusa trovoil modo di aprire questi contenitori pericoloso per le mani e dannoso per l'integrità dell sctolino io ho messo a punto una mia tecnica, che consiste nel poggiare su una suoerfice fissa il dispositivo; poi usando un martello di plastica o bachelite, per non lasciare tracce, batto col martello lungo il bordo della saldatura; o linea di incollaggio; l0 stress fisivco costituito dal colpo di martrllo, mi consente di lesionae i lembi saldati o incollati del contenitore; suppongo agisca più la vibrazione generata dal colpo di martello ben assestato, che fa scollare i lembi di chiusura del contenitore; non so di preciso cosa accade dìMa alla fine il contenitore si apre senza spaccarsi o mostrare segni di forzatura, come nel tuo caspo i segni causati dalla punta del cacciavite! ciò mi conente di incollarlo dopo con un collante gommoso tipo bostik senza che si notino segni del'intervento! Jon se mi consenti : non comprendo ilprerchè hai pubblicato questo video? Certo non sei un mago dell'elettronica e dell'approccio tecnico/scientifico; se non testi i componenti con un o multimetro; non puoi risolverr il guasto!
Comment from : @piodambrosio1427

2:22 - lepiej wziąć zwykły nóż, ułożyć wzdłuż klejenia zasilacza, by ostrze pokrywało się z miejscem klejenia, i uderzyć w ten nóż np młotkiem - czasem trzeba kilka razy - wtedy ładnie się nam zasilacz otwiera :)
Comment from : @PK-pt3qq

wow
Comment from : @awesomeautomation105

Nice videowhat camera are you using for this video please?brCheers
Comment from : @gixerags750

9:24 it’s open or low capacitor you placed the points improperly on the wrong solders it was placed not on the immediate opposite but to the upper solder to the inner side
Comment from : @elekid330

Good wark 👏
Comment from : @eid-algasim

Thanks John! Great info
Comment from : @BrettHoustonTube

Very well done! But, I would caution everybody to not use tin only solder Over time tin only solder produces "hairs" that can cause a short circuit damaging other components on the board If you look far enough, you can still find Tin/Lead 60/40 solder, just wash your hands well before handling food or smoking (for those who still do) I am restoring a Heathkit AR-3 receiver and will use modern components to do the job, but use the old solder to join the components I have about 15 pounds of the 60/40 rosin core solder in varying thicknesses so it should last me for a very long time A result of our "nanny State's" idea to "protect" us from ourselves Pointless, do you think?
Comment from : @lomgshorts3

Thanks I've always tought you cannot check capacitors in circuit
Comment from : @ClbnaVGM

Would you please talk like an American? I don't understand a word
Comment from : @membersataniccabalcoronau804

Octocupler full of rust
Comment from : @0557630

i think your nose blocked
Comment from : @HeroHero-vg2sd

Keep it up, nice video, thank you for sharing it :)
Comment from : @Bianchi77

Would it be the faulty capacitor that leaked from the bottom and corroded other parts of the board?
Comment from : @goku445

Tankiu wary matching the work and helping
Comment from : @pasargadzagroos9681

Good picture When you zoom what you use camera ?
Comment from : @thecmcmanthecmcman6043

Job done JW - great stuff!
Comment from : @colinmiles1052

Good tiching karte hai 👌👍👌👌👌
Comment from : @rahulpatelgujratahmedabad3497

I do like your videos trying to learn how to solve problems with capacitors on washing machines,dryers well done🤗
Comment from : @anthonygaunt8974

This was so much fun to watch and discover these problems with you I've had devices that came back to life once the shorts had been resolved just from cleaning the PC board It also looked like R10 had been rusted at the bottom, but that's great you found it as a cap that was messed up Great video, 5 years old and one of the best brbrFew people have a camera set up to allow the viewer to inspect components visually with the tech
Comment from : @paulfitzgerald4933

Looks as if maybe the Mrs's spilled on it watering the plants or an animal has had a wee on it
Comment from : @OldSkoolF

These power supplies are specified to last until any warrantee runs out brThey are made in sweat shops in China, Malaysia, or the PhilippinesbrUntil western economies take charge of their own production the garbage pile will grow exponentiallybrThank you JW for an instructive video of how to minimise that garbage pilebrCan repaired items like this be re-installed after repair?
Comment from : @stevejagger8602

Looks like a job for Mr Dremel 02:00
Comment from : @channelsixtysix066

Hello how are you? I bought an original used power supply from the same model as my old power supply to be in reserve, but in tests with the multimeter I noticed that it is marking: 1890v, while the old and original notebook one marks: 1943v I wanted to know if this voltage difference between the sources could cause some damage in my notebook or if I can use it without problems? Thanks
Comment from : @carlosGCT1981

Take a screwdriver and with a little hammer few little strike each side and it's open and less dangerous than a cutter
Comment from : @Angel1384

Very fine video showing all what is required from carefully opening the small box to examining the internal circutry, finding the faulty component and performing the repair and finishing the repair jobAll done with very fine images and good explanatiations during the work
Comment from : @perjensen2347

Oh JW I dont know if you know but you are such a dry wit Love your videos, you make me laugh
Comment from : @johnnoble9597

Well done sir! You inspired me to do better next time I get a phone call like that, recognizing there's another person that needs help on the other end of that call
Comment from : @waltschannel7465

Great video, JW
Comment from : @jimschiltz5343

Priateľu len rozpráva, rozpráva a nakoniec hneď vie, ktorá súčiastka je zlá
Comment from : @TEREZKATERKA100

Tänan vend selgituse eest (Tallinn)
Comment from : @leonhardnilsk870

that looks like spillover from the adhesive holding the seam you opened all the way around it
Comment from : @allenj7256

My guess is that the sticky stuff is placed in there on purpose It’s probably there to heat up and create a humid/corrosive environment to shorten the lifecycle of the product
Comment from : @leewoodrough242

It is interesting to see the insides of psus, especially bricks
Comment from : @ZeoAcinuz

I noticed any 12volt charger that sits for several years, eventually fail I purchased a used Mini refrigerator that uses a 12volt converter It no longer produces 12volts my guess was the capacitors inside dried up and failed This is very common with older equipment It's best to remove capacitors before testing
Comment from : @scottfirman

Wonderfull when you do not even know component names and fix it👍👍
Comment from : @shadowhunterxxx5891

I would have replaced that optocoupler too That corrosion on the pins will eventually reach the internal led or the photoresistor
Comment from : @guttenflax

Thanks for the video! I only have a regular multimeter, how can test the capacitor on the circuit without the gadget that you used in the video ?
Comment from : @kingneo195

Mine works and it turns on a computer fan but when on the same 12V contacts I add the cooling peltier plate the LED blinks and the fan doesn't turn on If I bypass the 12 Vdc with another power supply the fan spins and the peltier plate gets cold/hot I wonder if it is a load issue and what the component causing this could be
Comment from : @paolomartini150

I have a cool Boston Acoustics radio that has begun to hum during music, and also slightly when off too Would this be a component of the power supply? Old caps maybe?
Comment from : @highcurrent1125

我是电子科台北工專二專補校肄業修理sps电源供應器有9年经驗电腦主机板修理有二年经驗真空管音響组裝维修有4年的经驗以前大都是在電子公司當维修技術员和维修工程師較多能進台北工專一的祇有二种人一是學科非常強術科也非常強而我是學科不強但術科不赖的人所以英文不会祇聽懂拔出的零件說op開路不簡單能從电路上把壞的电容拔出代表你是老師父级謝謝你的视频敎學
Comment from : @user-vq7zn7wk5k

Hi John, you put on a better understanding correcting the subject matter thank you
Comment from : @mauinka123

3:56 bridge rectifier
Comment from : @zainshahee

hi, thank you for making these great videos1 im wondering if you could teach me how to wire a dc motor , bi-directional switch, usb charging module tp-4056, a 18650 rechargeable cell pls/
Comment from : @scottlei

Hi John Just my thought on the sticky deposit there, given that the case was probably "plastic welded" using an induction coil to melt the plastic together, this would have meant that no glue was used to stick the two halves together this is quite a common method for sealing psu's together these days Could the sticky deposit be melted varnish which had dripped from the inductor which may have become very hot during operation, which subsequently settled onto the plastic case? Once cooled it would have left a deposit similar to what you found? Just a thought ;)
Comment from : @boredwithusernames

i found the video quite thorough ( topnotch zoom & focus), thanks I have one of these fairly common PS - could one bypass/remove the rectifying circuitry to get 12VAC? i need 11VAC input for a Hitachi turntable, so i was thinking of removing some windings of the secondary coil IF they are accessible - would you reckon it is a viable option or what would/could you suggest please sir (11VAC seems to be quite scarce, like chicken teeth) 12VAC spins the (dc servo) motor, but obviously the speed is all messed upand how tunable is such low AC power with low voltage components if possible at all (for diy people)
Comment from : @andrevdm6406

Some people are liar liar repair I want to talk with the boys before Christmas
Comment from : @fathemasultana1027

its just glue unlovely put on there by an eastern worker that didnt get well paid i guess
Comment from : @danielcr0w

Everything is cool but that clicking sound from your mouth is really annoying No hard feeling next time don't do It please :D
Comment from : @alixxworkshop846

Good video Thank you I find it much quicker to just replace the suspect capacitor with a better quality one No need to check it
Comment from : @anonamus4860

please use a wire cutter or pliers on the offending kaput component and put it out of its useless existence ie give it the chop
Comment from : @johncliff4498

Would love to see some more repair videos!
Comment from : @OldSkoolF

Very bad solderingvery bad!
Comment from : @Atelierul29

Youtube an american company has created many foreign multi millionairesgotta love usa
Comment from : @shelby50411

I would have liked to see you measure the capacitance and ESR of the old and new capacitors Just to show us the difference
Comment from : @firstman9273

That is what I call low quality teaching There is virtually nothing informative in this video
Comment from : @mariuszkalwer5278

Im collecting AC adapters now
Comment from : @antresia9723

Those are normally sonically welded (as you discovered) If you bthink/b that there's a screw lurking under a label, it's better to just give it a couple of pokes with an x-acto, awl or similar to "break thru" the label This way, if there aren't any screws you haven't destroyed the label for no good reason I prefer an x-acto for this job because if you do discover a screw hole, it's easy to make a clean round slice around the screw hole for screwdriver access
Comment from : @vandal968

Next time find a straight very sharp knife edge and put the PS sideways andbrwith a small hammer Wack the knife edge and it will slowly open inch by inchbrand that is a lot safer !brI learned this here and ever since all my small wallwart PS can be re glued perfectly !!brEnjoy !!
Comment from : @dnantis

Hi John, can you teach me more of electronics?
Comment from : @chrisnguyenDQ2012

Ah, all the DC adapters I have thrown away in my life they all could have been fixed by simply replacing one component?
Comment from : @typingcat

it could be remains from the glue that was used from the factory to close the two sides of the box
Comment from : @Kerveros1904

Nice video but please talk clear English pronounsing each letter for us foreigners whom English is not their mother langauge
Comment from : @yoramstein