Laptop motherboard repair - When you just want to get the job done

[@max_rockatansky_2001]

A man who never gives up. Love to watch your videos, always calm and never talks bad at others work.

[@zavokzalniy1]

"Professional" level 80! He sees a burnt processor power supply mosfet on the board and supplies power to the board. There are no words, only obscene ones.

[@windycl111]

you are so calm when it's a frustrating job that you make it fun and funny

[@edu9835]

Far beyond the way you repaired it , we need to value the Great knowledge you have .And for that we love every video you make. Keep up the good work.

[@TymexComputing]

This is the best repair service on KZbin! not probably - for sure it is! Great intonation in the speaking - no worries - no frustration - thats the way to do it :) Thanks!

[@retrocomputinggrotto]

I can't believe you connected the SSD with the CPU fan still spinning!! Way beyond my current experience level but one day I might be able to have a go at such a thing.

[@lucataszarek8782]

This is electronics that I like to operate outside of standard schemes. You teach how to think and not how to duplicate diagrams and replace components, thank you🙏🙏🙏

[@Radek__]

12:55 Sorin. You miss one thing. You cannot use transistor with the SAME paramaters, because now when you don't have straight/tight/flat floor (solder pads) then the heat of the new transistor will be NOT proper absorb by the board, so the transistor with the same parameters, this time will die quicker, it will be overheating all the time. That is why each time if you have burned tracks/pads - the new transistor will be lifted above the board, so you have to use more powerful one, because then it will be more colder that original one.

[@blagzster6255]

You are the only man that can continually raise the bar of "Dodgyness"! Even you couldn't believe it this time:)

[@salvamipc]

Hi Sorin, absolutely incredible. I don’t think its dodgy at all, after all you work without any schematics, and you know exactly where to take the voltage from and where to connect it. Why dodgy, because of a wire? What is a wire, it’s like a track after all, and although you said you will not leave it like this, I think it’s good enough? I think like 90% of the shop will deem this board as no fix. I want to see any of those calling you dodgy, doing a better job. Keep up the good work.

[@ionutzxpo]

Astazi ai fost pe sistem MacGyver :) Sanatate si la cat mai multe reparatii!

[@thomasgreen9440]

3 words... Sorin is Awesome!!! 👍👍👍

[@melplishka5978]

I love how Sorin can laugh at his dodgyness lol.

[@Forbidden303]

Man builds entire PC from 1 wire.

[@em0_tion]

...and has spare parts left for a power plant! 🤣

[@drmoose7233]

@@em0_tion a man can only wish to have that Great knowledge it's sure a hell they don't teach us that in school

[@kolewtt6088]

@@drmoose7233 o

[@dropbydrop6075]

MONSIEUR, Vous êtes un magicien d'une patiente formidable ! On appel ça "le talent! " BRAVO ! ;)

[@razvaneremia2526]

Great video Sorin, this guys telling you that is dodginess or whatever they don't even have a clue what is a repair business. Keep up! I learned a lot from you during the time.

[@constantinmaciuca6323]

Stiu ce zici, mie mi.a placut. Spor în continuare!

[@LordDarthSidiousss]

Hey Sorin, great video as always keep them up!! About the Hako soldering station before you throw it aside, maybe check if the tips are good and such, could be the resistor inside of the tip is gone bad and you need a new tip. Cheers

[@bill_r]

Electronics repair school teaches how Sorin can fix anything with his wire and lighter fluid..

[@Miky198007]

Great level of dodgines! Love it :D I'm curious about the pads that were below the coil and i think prepared for the mosfets that sorin was so desprately trying to solder in air. The board was prepared for two types (dual FET or 2x single FET's)?🤷 Check below the coil.. There would fit the LOW side and on the left HIGH side FET) .

[@8500gtNvidia]

Thank you Master Sorin for these pearls!

[@rosch448]

tip is most likely oxidized.. when it turns really dark it's almost always game over.. need replacement tip. a nice cleaning procedure is important, after every use dip it into brass steel wool cleaner, always tin the tip and keep a small layer of solder on it to seal against oxidization. ofc also avoid really high temperatures.

[@rosch448]

also always test a laptop with a known working linux live system from usb / ubuntu or sth similar.. so you can pinpoint the problem better..

[@rosch448]

yes this also works 👍 you can, in some cases, bring the tip back to life. i would just buy a new one, doesn't require that much work. but in a situation when you have to finish a job & can't wait, reviving your tip might be the only option.

[@danielsaturnino5715]

I remember someone melting plastic on an apple speaker with that tip... maybe its a chemical issue.. plastic residue that you cant see? Just thinking out loud. Also, I'd try to lay down a tinned wire across the pins and bridge the connections. Just trying to help, dont get mad Sorin. You are far more competent than I am :)

[@thedogbarked123]

It looks like that low temp solder. It’s worth buying decent lead-free solder, not only because it is less toxic, but also because it is stronger. Better than using the cheap "trick" solder stuff. 4% Ag is the good stuff. Ecoloy Stannol 713. Also, if you have to use that low temp solder, dip it in some thinned rosin/alcohol paste

[@thedogbarked123]

@@Alex-mj7km Yeah that seems right. Re: Lead-free "stupidly expensive" is lead poisoning, "stupidly expensive° is a come back, because the solder joint broke. "Stupidly expensive" is wasting time on a job when you have many jobs to do because your tools don’t work.

[@thedogbarked123]

@@Alex-mj7km That may be the case with some alloys, but silver bearing lead-free works really well, which is what I was talking about. Leaded goes into the environment and animals and people in other countries don’t have a choice whether they lick it or not.

[@thedogbarked123]

​@@Alex-mj7km This is not the case. Animals don’t have a choice. People in other countries don’t have a choice. They are being exploited by more powerful countries via the banking system. You have a choice, but you don’t seem to think that choices affect you. That’s not the case. Why would the universe chose to help someone who makes choices which hurt others? Even directly, choices which exploit others are not beneficial. Look at Donald Trump, his wife won’t even hold his hand. I’ve seen people who live on the streets who have a better relationship.

[@soportemercado612]

Hey Sorin, you´re the best!

[@spvkovoor]

Sorin, You are awesome, amazing work ,Thank you dear

[@madramapeter2263]

Great Work Mr. Always following you

[@roche1237]

Well done as usual. You are plan maker and fixer 🎉🎉🎉🎉🎉

[@ravindraadapa2952]

That's why sorin sir has good electronic knowledge

[@zoltankecse991]

This is one of the best video Sorin. -Sooo many funny things. :)) Thanks. You made my day happy. :)

[@mariodistefano2973]

The border where a repair begins to became INGENUITY & ART... that's Sorin!!! (I'm not joking)

[@martindowney7915]

Cool job Sorin

[@juliusvalentinas]

Sorin is back !!!

[@turboimport95]

Great job bro.. Don't worry about haters. I would rather have a simple bypass and it works compared to throwing it away into the land fields. The board is trashed this is really the only option. Really no different then fixing something in a car that is shorted and would be a expensive repair otherwise.

[@renataavgeri1132]

I got a cheap 100 € yihua soldering station same as My Mate Vince and Joey Does Tech and am happy with it... yes it may not be exact on temperatures but seems to work accordingly like at 340 it works well for small boards and you up it accordingly for bigger ones... coming from battery powered and a straight mains solder iron and no experience on hot air am blown away with this station

[@hadiebrahimi4433]

You are the best since i staryed watching you ive learnt alot.keep up the good work. 👍

[@saeidshariati5103]

Thankful. It was very informative.

[@2bad83]

Hey Sorin you won the award for the most dodgy guy.. You almost took bridging mosfets to a whole new level.. I couldn't help but laugh. In this case use another small power supply because the thermo properties of the pad is gone those mosfets get very hot and require the pcb to cool them down...

[@intrax2tv]

So this will be a come-back job because of overheating !

[@2bad83]

@@intrax2tv maybe not because he just jumped the power from another power supply on the board. If his plan A worked that would definitely come back.

[@williamlogan4049]

Laugh and the World laughs with you, excellent work (doggie Ha Ha) thank you Sorin

[@VincentTubed]

What a beautiful creative way of trying to fix things properly. Already saw your upcoming video explaining more, but already knew your dodginess is responsible :). thanks for sharing and explaining, tought me a lot!

[@blalys42]

Sorin, FYI I put my 70w Hakko FX888D on an energy meter and the only time the meter ever read 70w was on the initial startup. Once the iron is on, it just draws what it needs to keep the tip at the set temperature. I would have thought that a more substantial tip could hold the heat better.

[@nakipelivan4007]

Mr. Sorin is the magicall men for this job, bravo big hello from serbia is the nice video thanks.

[@fisforfriendship6093]

how come you didnt look up data or parts list sheet for the model of laptop? woudnt it have details like specifications for what each mosfet should be?

[@johnoddvar1967]

I think the shotsky diode is a good reduser between one volt and 0,8.

[@em0_tion]

30:30 I must have gone back in time and watched Cartoon Network again, cause this is exactly like when Dexter laminated himself - nothing would stick! 🤣

[@bblod4896]

Plan "C" warranty: 30/30 = 30 seconds or 30 feet, whichever comes first.

[@markpenn4831]

Miracle fix ! Lazarus resurrection from laptop dead ! You are Jesus of laptop technology mate. Congratulations, excellent fix !!

[@071Rishi]

can you put link to video for repair with new small power supply, old video

[@Radek__]

1:34:34 no. if you leave it like that, it will burn that power supply WHEN the client start any game, or high power consumption process. You forgot that not all clients using laptops for youtube and google only.

[@Evhen_Velikiy]

Its a chromebook, its made for internet browsing, not games.

[@loverboykimi]

Anyone can explain diffrence between thin bridge vs wire? I thought cable has more resistance which means bigger voltage lose ? But here opposite.

[@wtfojoxojo1918]

Grande Maestro!!!!!

[@chrisconlon7970]

Good job. Well done. (CPU fan isn't spinning.)

[@worroSfOretsevraH]

You should have used 19 series diodes straight from the 19V rail.

[@alfonsoincorvaia2595]

Great job! Enjoyed this video!!!

[@AnonymousRepair]

You would need to see if the CPU can run at full speed, I the think that line is GPU power, as the CPU uses phases it will communicate to the driver IC for more or less power

[@ristatrios82]

Agreed

[@bbllsht77]

Maybe it was already working with plan C, but windows repair was loading, it needs a long time to wait.

[@verdunelectronics9985]

nice job sorrin

[@JazzEnso]

nice to you again

[@Mr-Craf-ty]

Hey jazz. I also watch your videos in your channel. I'm your subscriber.. Never thought you're also watching Sorin. Hehe. Pwede mag tanong sa iyo?. Hahah

[@JazzEnso]

@@Mr-Craf-ty yes matagal n q followers ni sorin 🥰 anu pala itatanung nyu?

[@Mr-Craf-ty]

@@JazzEnso alam nio po kung ano yung fault ng laptop. Na kahit tinaggal mo na yung charger. Nag cha charge pa rin ang nasa Icon nya. Tapos yung keyboard detected sa device manager at working fine daw pero di gumagana yung keyboard. Nag search ako online wala akong makita. Hehe . nag papraktis kasi ako mag repair. Salamat sa reply po . kung meyron ka pong video na para dun. Pwwde pahingi ng link hehe

[@laboratorioassembler]

OMG Sorin .... this was very very great!

[@TechRoady]

Very nice video. I am shocked its work I think you have good luck, your gfx Mosfet Brun and you just put on a jumper it's work. I am not lucky as like you, i don't get an easy job like you

[@hiteck007]

Mate the Hakko I have in my workshop is a good 25 years old & still runs perfectly. Change your tip for a good quality one. Interesting repair though.

[@DanielMoreira_18]

Sorin, do you use acid? Try it once, it will make the solder stick pretty good in thoses cases where it seems to keep on sliping, probrably due to the carbonized coper.

[@kevinmoore6954]

AmTech is available in America they have that exact flux!

[@winlose3073]

interesting repair I guess you just forgot that both gates are independent Sorin because I can't see anyway why this should not work in theory apart from heat dissipation but it should work and because I remember some weeks ago I had no mosfets around and had to use mosfets from a desktop motherboard to conduct some prototyping and it just worked fine so...

[@Dinejahani]

"I am not rich enough to buy cheap things! " Buy a good solder iron one time for ever. you save up from wrong corner

[@em0_tion]

We should update this saying to "crappy things", cause nowadays you can buy great cheap stuff and also super expensive crappy things. 😁

[@roseelectronics4582]

@@em0_tion : )

[@davianceable]

The thing is hakko is top of the line ,but that station could be the knock-off product

[@roseelectronics4582]

@@davianceable Even the Knock offs are expected to perform better than what our teacher was using

[@kiblansakaran9920]

Any recommendation?

[@rtwodtwo9338]

Great Magician Sorin what I have to watch in a toshiba laptop that the usbs gone shorted and I have 5 volts on usbs but they do nothing when inserting a usb device and windows not recognize at all ? Also the laptop working fine but there is a short to ground in some areas... I have checked mosfets and caps but nothing seems to be failing so far ...

[@Sang123-19]

Am very great full to your explanation sir how its wonder explained every things for that region every one like my teacher sorin sir

[@Damjanhd]

When that happend, when tin doesn't stick. You need to clean surface of mosfet with sharp knive, than solder will stick good. It is not haako problem.

[@Trustsimo07]

Never give up 👍🏻

[@xfactsmedia9541]

Incearcal pe asa Sorine, il am de 5 luni pt laptopuri si se descurca bine "atten St 100"

[@DanizonMontallana]

Now this is cool... now i know SSD M.2 can be hot plugged

[@LearnElectronicsCanada]

The Hakko FX951 you've been using always made me wonder whether it was a legit station. When I purchased my 951 years ago I purchased from an Authorized dealer and have NEVER had an issue with it (except when my tips are starting to show age). One reason I suspected your have a clone is the legit FM-2027 handles (that come with the station) have an LED indicator (transparent ring) on them not a solid plastic yellow ring. I also picked up a clone 951 to test out and although they 'look' 98% identical (does not come with transparent ring led indicator), they tend not to perform as well. Also if you are using low temp solder, contamination of leaded/unleaded and low temp solders can cause havoc on your tip - cleaning can be difficult. And don't get me started on cheap clone T12/15 tips. If you bought your station on Amazon, and it's not passed the return deadline, do it. If it is passed the deadline, determine if it's a fake, and notify the seller/amazon.

[@MrDinakdakan]

I dont know if its fake or not, but his soldering iron did come with idle sensor, most fakes do not have this feature, unless its a very good clone

[@Evhen_Velikiy]

I dont know. I'm using clone T12 tips, handle like FM-2027 and a DIY-kit controller with modified to 24V notebook power supply. Works just flawlessly, very happy with it. I think Sorin has some power supply issues with their iron.

[@loizostheochari1509]

Sorin do you carry any copper tape. So you can create new copper tracks.

[@MrYosek]

Nice job

[@thomasgibbon6529]

Manufacturer would not have had seperate power lines for no reason, they try to save on component costs wherever possible. The power line that you fed from will probably fail due to excess current and burn out, but good thinking.

[@jkaryskycoo]

Isn't this a common dual mosfet? Something that should be on hand? I don't get it, perhaps because I'm no prefessional.

[@DumahBrazorf]

The level of dodginess is so high even Sorin can't believe it. Sorin, remember with the new power supply to use a PROPER CALIBRATED FUSE.

[@ZZZ-z9n3n]

The level of dodginess is so high even hakko don't accept it :p

[@funny_gaming_Pro]

Can you fix my acer aspire 6530g ? i went to a computer repair shop and they told me that its motherboard was burnt and i need to buy a new motherboard (it costs around 300-200 cash for me) also i checked everything it just starts and after 8 seconds it shuts down then after 3 seconds it boots itself up and shuts down 8 seconds after, this happens all time and no screen shows up So uh how much would this cost ?

[@gile849]

Nice fix

[@blackdotkiller1]

Sorin got close to plan X,Y,Z 😁

[@bblod4896]

Then onto the Greek alphabet?

[@SinsBird]

I recently accidentally blew up the high side vcore MOSFET. I replaced the MOSFET, but no display on the screen and computer starts by itself when connecting the charger, then shuts down, starts again, and doesn't shut down anymore. It can be turned off with the power button. Fan starts spinning. Vcore is present. It seems like the ROM chips are getting accessed. What are the chances that the CPU is still good and if so, where could be the problem? It's a Lenovo Legion Y520 15-ikbm. Schematics and boardview are only available from older version 15-ikbn, NM-B191 board. it's kinda similar, many components and their placement match.

[@muneebhamdi7605]

Most likely dead cpu if Vcore on all phase coils is present when you 'blew up' the mosfet that most likely sent high voltage to the cpu and killed it

[@SinsBird]

​@@muneebhamdi7605 I think I've heard that CPU tells the PCH to read the ROM so if ROM is read in the beginning, the CPU is working? Something like that?

[@jbvtechnologies]

You are suppose to replace both mosfets, and change the chip controlling those mosfets…Replacing one mosfet is gonna drive you crazy, replace the 3, cause one can blown can burn the chip controlling it

[@SinsBird]

@@jbvtechnologies I think I made a mistake when I measured the low side MOSFET, we'll see when I remove it...

[@jbvtechnologies]

@@SinsBird next time replace all, I don’t think the cpu is burnt, Intel cpu are supper strong bro, the only mistake they did was to integrate the pch within the cpu, and the pch side always get shorted to ground or short within

[@Swenser]

Won't the extra load on the donor part of circuit that voltage is scavenged cause problems. Or are these things over rated enough to handle it long term?

[@michelk1445]

Great repair 👍

[@kriswillems5661]

You really need to invest in good equipment: a good soldering iron, low melt solder, solder wick, thermal camera. You repairs would be faster and better with the the correct tools.

[@mkonick5139]

Hi All, Anyone know where is he working? Which shop?

[@sdf_mx99]

great a new one congrats sorin

[@alexandruit9416]

Salut Sorin am vazut videolul foarte interesant, insa sti ce parere am eu, cand mai prinzi piese asa distruse adauga fludor mai mult sa poti desface piesele alea deteriorate in cazu tau care ti-a distrus si trasu de la mosfet si vei vedea ca le vei inlatura mult mai usor fara sa deteriorezi placa foarte mult sau chear deloc daca nu a fost deja distrus traseu.

[@a.z.7193]

It`s a Data Rescue Job so everything is ok, you get what you pay for, Sorin will be back ;-)

[@Keythong]

Alex from northridge fix will be shaking his head in disbelief if he saw the level of dodgy shenanigans going on here.

[@contacttly6398]

That chanel is for promoting a service / shop / bussines. This channel is about sharing knowledge & experience. Sorin can explain you that 1/ 0 logic states, at atomic level, are in fact electrons that are jumping from one level of energy to another. If you're interested in "hardcore" electronics repair, check the notebook-31 channel ( is russian).

[@roseelectronics4582]

Why not buy an Antex soldering iron?

[@pepega367]

Dodgy level is over 9000

[@sebastianstochmia5590]

You are the best.

[@DannyWilliamH]

Sorin, Amazon is full of copies. I can tell you that here in America the warehouses group all products together once recieved. So, if they buy 100 Hakko units directly from Hakko theg are placed in "Bin A". Then, if they buy 100 "Hakko" units they believe to be real from a 3rd party, they still place them in "Bin A". So when you buy a Hakko iron (or anything at all) it's a lottery as to whether you get a real unit. A buyer has better or worse odds depending on the product. Products that are cheap and easy to fake obviously make your odds of getting a real product less likely. SD Cards are notorious for this! Perfume is heavily faked. Etc. Yet, if you buy a TV or something it'll almost certainly be the real deal. You won't get a knock-off Samsung TV or the like because those aren't easy to make a 1:1 fake of. Hakko? Pretty commonly faked. In fact, outside of a certified retailer of Hakko products you'll almost certainly get a fake. Amazon no longer means "I definitely got a real product". Not at all.

[@farooqkhawaja3470]

Well done

[@ronniewhite8113]

What happened to your TS solder Iron ?

[@ZubairKhan-vs8fe]

Sorin. You are genius. Even without beard

[@mikestickersm3mxb279]

Hi Sorin, have you ever repaired a ham radio?

[@rs4016]

Use a bigger tip with more substance or increase the temp (420 degrees).

[@adaniel69]

DiodeGoneWild left the chat because the job was way too dodgy....🤣🤣🤣

[@Dr.muthanna]

Nice job Sorin . I think that you are using a bad quality solder , its not a solder iron issue

[@rar45555]

I'm not trying to teach anithing here, but, if you burn plastic with the soldering iron, you destroy the tip. Remember the Apple HomePod ?

[@rosch448]

oh absolutely

[@SinsBird]

The tip is not destroyed, just needs cleaning.