Buying Faulty Laptop Motherboards from Ebay, Worth it? Acer Swift SF315 repair
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- Опубликовано: 10 янв 2023
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My first port of call in such cases is to look for a faulty mainboard. You often find boards sold cheaply as defective for spare parts even because of a broken connector. I also often get remaining boards from services for spare parts sent to me free of charge, half of them are still easily repairable.
Even if you are not lucky, you can find so many components on a board that you can't make a loss with such cheap boards.
My friends don't understand my hobby in electronics repair. It's all about the satisfaction in bringing a dead component back to life, just like this motherboard. There's nothing like it. And you saved your customer money and he will tell his friends. Well done!
I do the same very long time.
From where I was small kid.
Owned TV&VCR shop
30 years serviced copiers
Now working for big Company doing electronics
i agree, for me it's somehow similar to programming, the satisfaction of finding an error hiding in hundred of codes and u have to debug each function to track where the fault is, unfortunately, unlike programming, fixing electronics require u to have some tools, like a good soldering station, Multimeter, Hot air gun, Microscope and a thermal camera. i have a dead laptop motherboard(since 2020) and i wish i had the tools to fix it, but buying them will cost far more than buying a gaming pc
@@gastongl404 If you are interested in putting a repair bench together this is the time to do it. I have multimeters, power supply, oscilloscopes, signal generator and boxes of parts and so far over the last 2 years I've spent less than $600. It's not a professional set up but it's great for a hobbyist like me. There are good used oscilloscopes for under $100. If you shop around everything is cheap now. If you ever wanted to do it, this is the best time.
@@coptertim thanks for ur advice, i am already the type that searches for used parts to save money xD, but in my country (Tunisia)everything is expensive, oscilloscopes here cost 1874 TND, used cost 570 TND, cheap semi-professional soldering station 1342 TND, microscope made in china between 500 and 1200 TND, and the motherboard i wanna repair is for hp pavillion note 15, i5 5200u so it doesn't worth it xD, imagine a car like Peugeot 106 costs around 11k TND(1dollar= around 3 TND) while the average salary is 700 TND, houses are impossible to buy since 2019, a TikToker got a free watch from china to sponsor it but he had to pay 50bucks taxes to get it(while the Chinese company already paid all fees), a girl working online(doing micro jobs) got paid like 2k $ from amazon and the central bank received the money and blocked her access, they said she's doing money laundry, and the list goes on xD,
Today in America, too many young people think this is a terrible place and they think we should be more like other countries. I wish they could speak to someone like you that knows how good we have it. I know one thing, people like yourself who come here do very well. They have good businesses and work very hard. Our kids don't know how good they have it. No matter what you hear in the news, if you come here and work hard, there is no limit to what you can do. Good luck with your project, I hope you find everything you're looking for.
That was a sweet repair Sorin and one to savour in the memory banks of best repairs. Thank you!
Congratulations for 300k subscribers!!!
Congratz on 300K subs!
i have seen a lot of your videos and feel i have never wasted any time , Thank you. Ps. Likely the original HDD / OS will not fully function because many OS's record the motherboards serial number to prevent copying the OS. Keep up the good work, Thank you
I love watching your work specially your tools...maybe i could fix my faulty x50 korg if i have tools like that..thank you for your video...
I use a lot of donor boards, often due to speed and availability of parts. Our hopes of taking two broken things and making one working thing can be quickly spoiled by the fact that many donors failed in pretty much the same way. However, in the case of motherboards, there are enough failure points that sometimes we get lucky and it really is just a capacitor.....
Loved the video, well done!
Nice one! i feel your joy sorin :)
I remember thinking the exact same way about just buying a working motherboard for a laptop.
Several months back I had an Alienware 15 R2 that wasn't powering on and wasn't taking a charge. AC adapter went into protection mode as well. Narrowed it down to a shorted capacitor on the VCORE circuit. The short went away and the AC adapter didn't go into protection mode anymore, but unfortunately the CPU was shorted so the board was deemed a no fix. So I searched for a replacement.
There were replacement boards for $130 or so, and then there was a "for parts" board for $70. I decided to take the risk and order the board to make it interesting.
This replacement board had the exact same problem, but without the shorted CPU. Replaced the shorted capacitor and the board powers on and functions, but shortly after I discovered that it wasn't charging the battery and it was reporting the incorrect charge percentage. So I went ahead and checked the first two MOSFETS next to the DC IN jack. One of them had extremely low resistance; so I went back to the old board and took one of the MOSFETS off and replaced it on the new board. Powered on the laptop and looked at the battery and charge status.
Charging.
The risks that you take in life determine whether or not you truly learn. If I hadn't ordered a non-working board and learned how to fix it, I probably wouldn't have the experience in measuring components or fixing those boards because I'd be taking the easy way out by just ordering a perfectly functioning board, and that's never really fun in my eyes.
My manager was happy that I fixed it and he decided to buy the laptop from me since he needed one with an ethernet jack.
Great Job Sorin👍
Laughter 😂 when you talk about replacing the capacitor. It is worth a million likes
I am happy for you that you were able to repair the laptop but I would have also liked to learn Romanian dance with Professor Sorin 😂
It would be nice if you identify the type of cap and show the re-fit. Ive never seen surface mount re-soldering. Great video again thanks.
If there is schematics he can tell the value. Since he swaps the cap from the old board there is no need. He would use likely hot air station and pre-tined pad and just place the new old cap in place. AdamantIT have plenty such videos.
My experience with faulty motherboards from ebay was not so bright as yours. All of them had non-fixable fault, like shorted cpu and such. I did buy them to learn though so it wasn't total loss at least. Thank you Sorin so another great vid.
So you are saying its impossible to fix those laptops if cpu or such are shorted? how
@@SaadKhan-rg4eh of-course it is possible to fix the MB, even if the CPU/GPU is shorted, but at what cost? CPU from china will most likely cost you the same amount as the fully working motherboard.
13:50 that chuckle says it all lol great satisfaction
Good job mate 👍
Your a great technician,. Where is your place, I have laptop problem also.
Good job sir. 👍
I am Sad so many new laptops unfixable cause of gpu or gpu shorted!Old question needs new answer its time for reballing or not???Anyway another nice video from Mr Sorin Thank you!!!
in order to apply thermopaste u need to put some paste just only in the middle and with the heatsink u will press all over the chip. That is how it should be.
Ahahaaah geat! The good work keeps going! Thank you Master!
Nice video, why the designer of the pcb didn't put an overvoltage protection for the cpu and other shipset.
Good call...your not only very skilled but lucky too lol! but dont forget the board swap may bring up a small license headache if running windows... as OEM installs are tied to the hardware but are easily resolved
With soldered ram boards, I wouldn't say victory without at least testing everything. There's boards out there with defective storage controllers. Have fun with those
Likely the "new' board had windoze and just activates anyway and now the Microsoft 3rd party meta clients are getting confused with the drastic change in the user's browsing habits. Might think they are performing NewYear's resolutions and giving up the porn sites ;)
Very happy you have 300K. I get almost as much satisfaction when you repair something.
great video.
I knew it will work with you!
Great video, thanks Sorin. Are you now going to sell that other faulty motherboard on Ebay for 30 pounds? ;-)
nice one sir you are awsome
Pls make video how to reprogram that big chip. And.. did you resolder that cap ;)?
Your a magician ... I want to be like you someday..
Master Sorin, why your first reaction was like „oh, main power rail is shorted, that‘s bad…“ when for each Mosfet, there are a couple of caps between power rail and ground, so statistically is more likely it is a shorted cap than high side Mosfet. Perhaps guy who sold the board on ebay thinks the same way, main power rail shorted, so I cannot fix it…
I'd like to know the answer as well
Respect domnule Sorin.sunt student la electrica dar sincer nu avem practica. Cum as putea sa invat ceva că un curs de început ? Sa pot da înainte cu mici lucruri reparatii as vrea . Scule și componente am ceva până acum , nu am osciloscop dar o sa folosesc o placa de sunet momentan
Sorin with luck on your side or the magic of your repairs it's a good idea to buy faulty motherboards just how faulty is the big question :)
Yes i could see Sorin Dancing to Polka Music :)
Nice One Sir..🥰🥰🥰
Nice one
How much did you spend trying to fix the original one?
Sorin have you consider buying broken electronics and try to flip it? It makes good content and you'll make some money on the side.
What is the functions of that capacitor which short the mother board because i always experience shortest in devices cause through the capacitor
Dancing with Sorin. What are you going to teach in your first lesson? :D
I've been dancing for years Sorin
Sorin, thank you for sharing. Ebay boards can be like playing the lottery. You either love or hate ebay. A bit like marmite. We cannot do without in the end.
Always Marmite, never Vegemite (yuk).
Electronic dance school. I like the sound of that !
Hi Sorin, thnx for the great content. Whenever you figure out that a capacitor is short and you do not have a backup motherboard, how do you find out the capacitance and voltage in order to replace the shorted one ?
You shouldn't ask embarassing questions.
@@dennisbjones Greetings. Why are the questions embarrassing? Without a schematic and a similar board to compare, where will you get the information you require if not from a stalwart like Sorin who is obviously knowledgeable and would likely have the technical know how to share? Is it embarrassing to ask questions to increase your knowledge? Sorin was not asked about aeronautics engineering and or neurological procedures. He was asked the methods that would likely be used to determine the specifications of components if certain things that could otherwise be referred to are absent.
@@devonwilson5776 It was a joke because it is very unlikely that Sorin replaced the capacitor even if he did say offhand that he would. He knows that the laptop will work without the capacitor. He is also bound by a fixed fee charge etc. Typicaly if you were to try to determine it's value, you could remove a similar one near it and measure (especially if there are several in parallel).
There will likely be some info printed on the capacitor that will give you enough info to pull the data sheet. If not sometimes you can search around online and find out more about that board and possibly the components.
To the dude that told you to not be asking embarrassing questions, embarrassing bro.
At 7.50, was there a capacitor already removed from this location where power was applied?
no this is empty by default also at the original board as you can see at 0:25
capacitors fail on 80 percent of them i took 3 off mine that was in roll and now it works so i left it as is lol. apparently you dont need them all
I guess we have to wait to learn to dance, and here I was looking foreword to it.
Have been looking for a good thermal camera but there to much !!
I was hoping for a tango lesson... Dammit. ;)
Hi Uncle Sorin , wanna ask something between Thermal Paste and Thermal Pad for Processor/GPU Laptops, which better from your point of view? need your reply please. big hugh from indonesia!
cpu and gpu dies needs thermal paste because of directly in contact with thermal interface of the heatsink (baseplate) of the vaporchamber and creates more heat source quickly and much less air gap bubbles is needed thats why thermal paste is a must. thermal pad on the other hand is good for ram and ssd.
@@sipansibabdreddknot5179 ok tx for your explanation , thanks
why most of the faulty laptops that I saw over the years are Acer branded?
What's the issue with a shorted mosfet? And why would it not be repairable? I don't get it.
usually if the mosfet is shorted the CPU is dead.
Sorin you are like my father to me. I learned how to repair laptop from scratch ..now i run a business 😊😊😊😊
he is one of these guys, who can do magic!!
with expensive tools and ways, you can fix most of the devices! but Sorin use always a proper 1A fuse to fix his Jobs!
Thats the cool move in his work!
@@Knebebelmeyer Yes a proper 1A calibrated fuse...😀😀😀 Regards from Italy.
sorin i need some dance moves for my lacocoracha
Prices for faulty motherboards, GPU, and electronics in general have gone up in price, so taking the gamble has become expensive. Especially, when someone has attempted to repair it before, and have butchered it in the process.
after watching: satisfaction !!!
You are a great guy, Sorin. Thank you and best of luck!
Are you UK based
Sorin ,,, you are the man ! One day i will replace you ! ( of Course )
Sorin! I'm getting a t-shirt: It's a capacitor!!!
and on the back "I will replace it" :D
@@GharacDurac Not! Hehe
We can hear clicking without you moving your headset to the PS
3:00 Sorin dancing school 🤣
14:00 Sorin dancing school postponed 🤣
आपका का कार्य सराहनीय है और आपका अस्थमा ठीक। है।.
What caused the sparks at 3:26? Is it possible it caused damage?
nah. his power supply was just shorting to ground
Lowering the voltage on the power supply to like 1 volt, connect to motherboard, and then turning up the voltage on the power supply can help prevent that spark.
The spark is caused by high amperage going into the laptop, then suddenly the power supply brings the amperage back down to the amp setting on the power supply.
Power supplies often have capacitors on the output to smooth the output power. Those capacitors are able to provide a short burst of amperage.
This post will be shadow banned by Communist Google.
My post was shadow banned by Communist Google.
The problem with SF315 or SF315-41G is that the power management is controlled by the APU/CPU. Worse if it's the 41G because it will not turn on the Discrete GPU neither.
Sorry folks, this channel is still called Electronics Repair School. We won't be practicing dance today 🤣
Congrats on 300k subs Sorin... Just proves the absolute gems you're posting here
Good Idea. Just buy another faulty board. I learnt something
What type of liquid do he use to locate the short?
I was thinking it was isopropyl, due to lower evaporating point?
isopropyl alcohol 99%
@@rbastianic why do you give an answer if you do not actually know? He is not using isopropyl alcohol
lighter fuel
He uses lighter fluid, but you can also use alcohol. This post will be shadow banned by Communist Google.
When you are doing it for a hobby/learning, ie, no pressure, it's fine, but for a business it could bite you in the ass, ie, it could be as bad as the first MB.
Thanks for sharing this video
So far for me it’s been a rip off, guy sold 2 computers no power issue and mentioned nothing about adding Liquid Metal to computers and they were both shot.
you should buy more from this seller xD
Hi sir thank you for the lesson am in watching, teach me more
30 dollar motherboard was a fluke ....1 out of million chances ... thats power of fixing electronics but problem is computer stores are too lazy to do this type of work or just are ignorant understanding how to fix electronics !
You don't have to open a dance school!!
Its alive again 🙂 That is the best thing in electronics repair when something dead is alive again the thermal camera do the thing agin😊Sorin you are the best👍
I am not from the UK, but I have recommended you many times when people has asked for places that does repairs!
Well I would not be mad at Sorin if he were to teach us how to dance at our wedings or stuff like that. xD
Be Happy!.. remember me when I was taking from thrash center, motherboards, graphic cards, disks, pentiums, Celeron and rebuilding a new one, being happy when the screen was showing the bios. As a teacher I was doing that with no money for my school, to the students having access to computers. Most of the machines thrown to trash were working. I had mostly issues with the new material brought at high price for my daughters or for me! I remember a graphic card taking lot of heat I brought 'new' on ebay...
WOW ... all I can say is WOW! 🤗 Lucky .... for sure. Yup, I'd be smiling too. 😄
Very funny😂
Win - win 👍 That was happy ending 😊
👏👏👏👍💪
Certainly it makes no sense to buy an expensive previously repaired board for a repair expert.😄
Sorin I cleaned the dancing shoes,
Dance 101 lol 😆
Nice repair and bit of luck too.I personally bought several boards or even whole laptops and all of them had bad mosfets on CPU or RAM power supplies and fried CPUs of course.
But again - nice repair with a big satisfaction at the end for you and us Sorin!
Those who have seen me dance are of the unanimous opinion that a dancing gryzzly bear is more graceful than me, which is why I see my future on this newly named channel as very dark.
So I guess no dancing school ?
Sorin, thank you very much for this kind of videos. Please release more teaching stuff, doesnt matter how long it will be. We need knowledge!! THANK YOU! You are the best
No dancing classes though 🤦🏻♂️
nice work sir
Change the channel to a how to prepare hot dogs channel. 😅
Hahahaha! Dancing school ? I hope it's just a joke, then I already can dance! :)
wow this fix was amazing!
Very exciting video and interesting.
I'm still watching .
Sorin's Dancing School! Great idea. I bet you Sorin can cut the rug!