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Laptop not coming on, not charging and no, is not a motherboard fault
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- Опубликовано: 14 авг 2024
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Sorin, I suggest you use a lower voltage for finding shorts
If the high side mosfet of the Vcore supply is shorted, you would inject 19V directly to the processor and fry it.
Just inject 1V or 2V.
BTW I purchased a UTI690B IR camera. This is a high definition device for under 300 euros. Highly recommended (with an additional macro lens)
Thanks again for your precious videos
if high side is shorted CPU is already dead, he can't kill it twice. Protection will kick in (unless Sorin removed it before in previous repair ofc :)) in case of short but too late to save any modern CPU.
@@gorjy9610 Interesting point, thanks.
In that case, a shorted Vcore high side mosfet would imply the death of any modern laptop with soldered processor.
I am still under the impression that the protection features would detect the shorted high side mosfet and cut the 19V supply _before_ the processor is toasted.
Any other opinions on this specific situation ??
The protection provably did detect short on main rail hence the reason laptop not coming on.What is dangerous is to then inject 19V without first checking cpu vcore buck regulator for stuck mosfets eg sending voltage when it should not.If you inject 19v you just destroyed cpu.Start by checking all power rail coils for shorts an if injecting voltage start with lowest value like 0.8vJust my opinion and learnt from a bad experience.
4:41 I can confirm it's a 5552, i remember working on that laptop
I like how you acknowledge own mistake and this is how we learn.
The problem is that he learns on clients devices!! How many devices been return to clients with more damages after applying voltage to find a short??
@@lee8902 Do you have other options to diagnose the fault?
@@shamshadansari1765Yes, multimeter!! Of course it takes longer but I'm sure that I would not make more damage. Secondly, you have to unplug/disconnect all the cables from a motherboard and remove it from the case and check mesuarements again. And the last, for the lcd cables I use lcd cable tester to check them
@@lee8902 everybody learns on clients devices, only if you work with just one type/model of device it can be different.
@@gorjy9610 First of all, the name of the channel is “school” so all the viewers think that is the right way to do it!! I wonder who would pay for the screen if it got damaged by applying the voltage to find a short?? Obviously customer!! Believe me, I work with lots of laptops after other “repair” shops who made more damage to clients devices. I agree that all engineers do mistakes, but not all of them pay fo their mistakes. These basics you learn first year but definitely not as a TEACHER who shows how to repair!!!
irony maybe, but when I first saw the title I thought it must be the screen and Sorin, you taught me that.
Interesting case! Not the usual places where we would look. Good job!
... first what i do in this case is disconnect everything from the board and check if the board starts or not ...
I love to learn about electronics repair and you sir, are a fantastic teacher. I appreciate what you show us. Thank you
I love your video and I learning English and elctronic from am from syria and now I am living in Egypt studying the biugner lesson thank you ........
I like The Vape Moments...
Haha, me too ✋
Every time he stops to think and take a puff ,, solutions come 👍
What I'm doing when devices don't wanna start, is unplug everything that is not needed to boot up / power-up. If that is not working, the next procedure is to reset it if I can, laptops, PCs we can, and other devices with batteries. With laptops and batteries, we don't need an HDD/SSD, or wifi, optical drive, so, I'd disconnect it all. It saved me many times a lot of time :).
Love your show. It’s so hot here and yet it’s October. 30 c. Unbelievable.
Hi Sorin, its always a nice idea to store salvaged or dead laptops to extract parts instead of ordering from china, it makes life easier . NICE JOB
I've got similar problem once.. The cable was broken under the hinge. Some tape... done the job.. Best for You.
Had a similar issue on another acer not long ago. Webcam had a short and shared same cable as screen. Short not only ruined the cable but also took out the chipset on the MB.
An easy solutions to open the the LVDS cables is IPA (Isopropyl alcohol ) apply a few drops and it will loosen up
Try to unscrew that ruined screw with a thick rubber band between the screw and the screwdriver.
Small sharp flat screwdriver doo job
Sorin is like Yoda, he uses the force like a true Jedi. Great videos, you are a genius mate keep the good content, excellent material.
Sorin, you are so great in what you do!
Hi sorin, sometimes its easier to just swap parts, i know it's against our code of "fix it all" but ... and another thing, please put something under the screen laptop, i could fell in my bones the screen getting scratched hahahaha
@@andrew_koala2974 thanks Andrew, I was in a hurry, and I wasn't using the corrector on my smarphone, I was using my computer, like now, but anyways, you right about your corrections, glad that you've pointed out, btw, I'm Brazilian! cheers!
Hi so we're back same Tuesday
Learner here
Nice! Thanks.
Sorin you do the best work all time .
If laptop start work the fun is spinning. After some seconds the fun stoped what is the problem . Thanks
Always great! Thank you sir!
what a strange fault . thank you Sorin
Love your work and learned a lot of info thanks and keep it up.
Thanks for sharing your knowledge
Always good sound but you must do something about it.the sound cancelling is to high you getting cut off if you don’t speak and coming back after a few seconds. Strange normally you have great sounds.
By the way a great find again screen cable fault. Thank you for the great job
Good job am happy to see ur videos
Gracias por compartir!!! Saludos!!!
Thank you very much
I learned lot of things from you tnq!!!
Great job 👍 keep walking ☺️
nice work
Yes you are very lucky by this one.
interesting and tricky one cool 👍
good job mate.
A BIG LIKE, lvds display cable is the guilty
Time to get an IR camera Sorin :)
Mr Sorin can u please upload tutorials on how to fix macbook pro 2010 with green light but no power
Amazing channel❗👍🏼
Thank you master!!!
Hey, love your video. I just have a quick question Hope u can answer. I recently completed my Repair course and I don't know how to progress further? I don't what to do next and get work/job, or how get some physical Experience. Will be happy if you reply.
I would recommend starting "general repair" e.g screen repairs first and then after you have gotten used to that, you can move onto learning microsoldering. There are plenty of resources online like Sorin's channel which you can learn from.
I would reccomend first getting this practical experience. Then if you want to you can find work at a repair shop or start your own repair business. But remember that if you go start your own repair business that there will probably be a lot of competition between you and other repair businesses. Having that practical experience and showing your customers that you are better than another repair shop will encourage them to go to you.
Hope this helps!😁
@@senkuishigami3884 thanks i will try this
@@thegamebot your welcome!!!😁
thank you man
But Nea Sorin,
Wouldn't a thermal camera be significantly cheaper than your helium access point? Wouldnt it be worth it?
(i know the access point pays for itself but the camera maybe would also do that by making things more convenient)
There are those Seek thermal cameras that you attach to a smartphone for less than 200 pounds, with good resolution and framerate.
It's not his shop, he works for them.
He talked about it long time ago on the older videos, the owner of the shop is the one to blame.
@@jujujuoooo yeah, he also said in a video not that long ago that he has a slight degree of independence from the owner
i won't discuss store politics, just wanted to say there are pertinent thermal cameras on the """cheap""" like that Seek one
Great as always
Ribbon cable ? That is crazy
Good job 👏
Maybe that was USB link from camera melted...
Very possible, i din;t think about this
Hmm how could that happen.i didn't expect the cable.
Come to Besiktas Sorin...
Hello brother, I thank you for the video and I have a broken laptop. How do I send you a video clip or pictures of the holidays? Thank you very much
I have a very expensive razer blade laptop that stopped charging all of a sudden. would you be interested in fixing it ?
Nice video, thanks :)
Oops 🥴 It's ok... no one got hurt 😂
Lesson learned... no injection with flat cable connected :)
the fuckn best u sorin da man keep teachn us make it eaiser, tanks
Sorin hello, just that one : is a first mosfet bridged capable of providing erratic information about "battery/sector on"? that laptop switches between both , or sometimes it say put correctly on "sector" . looks like a false contact somewhere, but I suppose I better change that first mosfet (bridged) first is not it ? thanks so much I suppose a yes or a no would be enough ;) BTW I only have those messages on screen with the screen luminosity changing at the same time, but the power supply show no large current change (0.02A ) . Battery correctly charged 99% with the laptop
Can you explain helical wind and vertical wind hot air gun difference
The SAME virus/issue happened to two separate computers, six months apart ! Sabotage !
The same work
Brilhante
Hi Sorin. I have a question what value you get when component is short?
I didnt quite understand why they were melted
How do I get battery not detected fixed sir?
i watched it but none the wiser. i have the exact laptop so what was the problem and the fix.
And how much will this set the customer off?
60?
Anyone know the address of the shop repairing
can you do syma x20 fix the charging bc my charging broken
BRAVO BOSS ;)
❤
Hi man 👨 my daughter board conector just got broken can I fix it
Hello Sorin
I enjoy your videos very much, but the AGC in this video is *really* annoying. It keeps switching on an off. Is the not some middle way adjustment...
Kind regards
Claus - DK
WTF?! 😂
I was watching this video on my tablets, where the AGC was really noticeable. But her on my computer there is no apparent problem. Funny there is such a difference..
So please ignore my comment..
Claus - DK
Interesting fault .
Need Basic information for laptop repairing
Hey sir
need infrared for work
Oook
Nice scratches on the screen now Sorin.
Try laying the screen onto a piece of cardboard instead of laying it straight on to scratchy stuff.
Customer would be right to complain..
Don't get me wrong though,you do know your stuff,but you are no Louis Rossmann.
😤😳🤔
Anyone knows Mr. Sorin's business address & phone # .
😍😍❤❤😍❤😍❤😍❤😍❤😍❤
I have laptop turn auto off after 23 minutes
Watching briefly, no time for all video as I can not focus as this repair does not make sense. Have you seen short in the cable before? Wrong cable will most likely looks like fume vape and you will smell it. Did you feel connector hot before messing about? You should check cable where it is hot otherwise it is screen or conection to screen. Disassembling of cable seems to me wasted time without checking its temperature.
First
Yes you are very lucky by this one.