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That's why is not worth trying to fix a laptop after someone already worked on that board
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- čas přidán 16. 02. 2023
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"the only thing I could do is to open the battery"
"which I WILL DO"
This is why I like this channel. No bullshitting, no chickening out.
and not much experience debugging hardware
It might sound odd, but seeing Sorin get depressed because he could not fix a laptop hits close to home: I always get depressed when I can't fix something
Maybe you should state on your website, that any previous repair attempt found will not be eligible for no fix no fee. Love your videos
I think that would be a good idea.
People will be lying as much as they can and acting clueless to avoid paying for a failed repair attempt even blame it on you.
@@HenrikHvalpen I'm in the business and now video everything. From start to finish. Any supprises are immediately removed.
yes, I agree that people lie all the time, but this time I disagree with his conclusion. I've seen these solder balls on a lot of boards. and even those that I know for sure that no one repaired or disassembled.It's a manufacturing error and it's probably related to the use of solder paste. Besides, a professional wouldn't heat the CPU from below, and an amateur would burn the glue that's in the corners of the CPU. I think the cpu just died this time
@@ServisTOPRO yes, MacBook's always have this small solder bulbs, I already used to remove them from Apple laptops
This was a fantastic battery repair Sorin. Your disappointment is obvious at the end result but had you been the first one to open this laptop, it would be working fine again now.
But we learned a lot of this session! Thanks!
dont upset Sorin you do the best , thank you
Well done Sorin for trying you did more then you had to
The detail you go into and why is awesome, as someone who would like to start doing repairs, I have subscribed. Thank you for your work, even tho sometimes you can't fix everything
Thank you, my teacher, always and forever. I learned a lot from you, so thank you again
Sorin, Great video, you might set a repair attempt fee or something like that to your customers, I do this computer repair on part time and have my main job in the trucking industry for 6 years, if I take a semi truck to the mechanic shop they charge you even if they don't fix truck, remember doctors charge you even if they don't cure you. Most people think that if they take their device for repair and it doesn't get repair they are not obligated to pay anything and that is 1000% wrong.
It was a waste of time for you but a great learning class for me. Thanks Sorin. You're a great guru
This is why I like this channel. No bullshitting, no chickening out.
Perfect attempt... You are my hero.
Joel, BSE, PE
nice video, but i i think the best way to avoid wasting your time is to make the visual inspection first… for all parts, because you knew that someome has opened it before. thank you for sharing your knowledge as always ❤
What would you have done before the thermal camera came? Alchol? Search? You're a clever man, and nice with it. Thankyou for another amazing video.
Thx for your work it will help someone
I admit to having done something similar to a laptop before. It was a cheap one and wasn't worth the cost of repair so I thought maybe I would try the heat gun method because the gpu had started to desolder itself. Only problem is is I forgot my heat gun was in Celsius not Fahrenheit. Totally toasted the board
I've seen these solder ball residues on many boards, including Apple, it's nothing abnormal and just a manufacturing defect. These processors are dying, but I don't believe that anyone here has reflowed the CPU.
Sir, sir, that board is friggin burnt. That's not manufacturing defects, those components are absolutely burnt from previous attempted rework.
I should know, I've spent over 10 years doing such things and have received compliments from NASA engineers regarding my soldering work.
Those kind of burns just don't happen at the factory, and if you can prove otherwise, then such factories need to be shut down.
You see those pitted capacitors and such? Yeah, those caps are gone, they'd never pass any factory inspection. Those have been reworked with way too much heat.
@@southernflatland the most sensitive part to heat there is glue around the cpu and the glue is completely clear. it would not withstand the high temperature. so the cpu was not heated. I have seen these manufacturing errors on a number of boards. Even a change in the color of the capacitor solder around the power elements is normal. I have years of experience and many repairs behind me.
Indeed, these balls are both an indication that the manufacturer possibly went with the choice of "slightly more" paste and risk some free-balling rather than "slightly less" paste and open/incomplete connections, but also it's also fairly common to happen simply because when the solder paste warms up sometimes slightly differently to the planned rate and the flux will create a solder-paste-balls island which is incapable of rejoining the main mass simply because of the flux now being in the way. While we have some impressively good control over the reflow process there's always going to be localised variations of the reflow curve purely because of thermal masses, small airgaps, or so many other things.
What is important here is that the resulting free-ball is of a size too small to pose a shorting risk regardless of where it rolls ( not that they tend to roll far, as they're typically bound by the cooled flux ).
They say, if you've tried everything and still can't fix it just send it to sorin 😂😂😂😂
I don't think that CPU has been reflowed, the edgebonding is clear, not burnt yellow and the flux on the pcb jumper bridge is original.
Sadly it's a dead integrated chipset, but I don't think the chip died from reflow.
The copper shards are from the heatsink, bad design...
The copper shards are from the heatsink, bad design..."
They might be the reason this chipset died. Poor heat transfer then it burnt.
22:43 solder balls are not a proof of someone doing rework. It is actually more frequent indicator (but not an issue) of not so well optimized process in assembly factory
21:22 - You don't so much as pass factory inspection with a functional unit with random metal slivers coming from under the chip. That thing is fubared from crappy rework.
Seriously, it would have never made it past functionality tests at the factory with those loose metal slivers. Those aren't solder balls, those are literal broken copper trace fragments.
Someone screwed that board to hell, and it wasn't the factory. It would have never worked in the first place to make it to a store shelf with those busted traces.
@@southernflatland random metal slivers unfortunately occur. We have been fighting about that with at least four EMS plants. I don't see evidence supporting prior rework hypothesis and I am picky about it. I have trained hundred people how to spot even single touchup, evidence of warping during reflow and improper solder paste handling just by visual clues. Especially cheaper laptops are not so well protected from any dust, that could enter enclosure. I have seen sand, hair and dust sticking to low quality TIM. That chip looks like it have internal fault.
@@brylozketrzyn Look elsewhere in the video, there's pitted capacitors and copper colored solder joints. Telltale signs of overheating and obvious points of failure.
Now whether that's truly an issue of manufacturing or of rework, I can't be fully sure since I clearly haven't been to the factories in question. But in my experience, when SMD capacitors are pitted, someone seriously overheated them.
You may not have made money of opening that pile of junk, but you’ve earned a sub from me. You are owed more though…
that battery cost like 100...nice rescue!
At least you don't have a surface pro. After getting a quote for replacing the display I decided to go it alone. Having never had to open one with adhesives, I still stubbornly bought a heat gun and started to melt that adhesive. Unfortunately, I also melted through one of the lithium batteries which I was able to detect when smoke started to shoot out of it like a rocket engine. Now, being of sound mind and failing body I decided immediately to get that sucker outside. Me blowing up with it would not be anything close to me blowing it up in the house and somebody waking up.
Sorin, I am finding with a lot of these integrated CPU/CHIPSET the RTCVCC line is always shorted. Uneconomical to fix, so I always go straight to checking the RTC on the CPU, if its shorted, forget it.
GENIUS.
super , merci pour cette video inintéressante
"This is proper weird"
“Nice Dell” - a very subtle humor. 😂
You should charge customers for repair attempt even device is no fix
This is why you need an attempt fix charge so others don't waste your time for nothing.
Cool...That Battery Software Impressive...
Can't win 'em all. Thanks for the vid.
We learned how to test battery. And I thanks you
So what was the reason at the start for the voltage increasing despite there being no current? I will rewatch the video in a bit just to see if there was something I missed.
I love vid like this, going all detective mode to work out WTF happened to this flop top.
Thank you for the videos, Sorin. Repair attempt fee? I probably would try to reflow. Nothing to lose.
he already mention someone used a flamethrower before him and nothing happened
@@tossancuyota7848 😆
@@sethreign8103 hehe atleast the first guy didnt use splash XD
Can it be that shorted CPU/Chipset blow the battery fuse?
Fuses usually don't blow without reason.
Sorin one for the bin
actually if you have full access to service manual or system specific technical details. im sure its easy.
i mean if you can check all sub system independently of each other. you can allways check each system seperately, but you are right if you dont have detailed system/chip/module based information you newer know what went wrong and sometimes there is no change to check before anything becomes stable and working :P
Strange init how when someone works on something the previous person always did a bad job, or it could be that the new "technician" is not good enough to fix it
I’ve the same problem with my XPS 15 95F/9550 it never worked on I changed the battery and change the CMOS And it’s still turn on then off immediately. Any suggestions would greatly be appreciated
I used to put repair chips on satellite antennas when they first came out. We needed microscopes with a large focal distance for room to work. They cost thousands of dollars. Now with cheap cameras and a screen almost anyone could afford to do it at home.
edit: The rest of what you do takes special knowledge I do not have.
So you work for knowledge and for a nice video. Next time you will know. That fuse blew for a reason. I would assume that it had overcurrent pulled from the shorted chipset. Could that be the reason? Thank you for sharing.
You should have a diagnostic fee deductible on a successful repair
Exellente vidéo as always
Sorin plz customer must pay repair attemp fee so you not wast your time on nothing
But a shorted power mosfet would have the same hot spot on cpu, as too much current goes in, right?
Hi Sorin. Joey does tech recommended your channel and rightly so.
You have a very good eye in this video.
It looks like a repairable battery problem made someone destroy a perfectly good laptop because they couldn't work out what was wrong 😞
They should have come to you first!
That person will go on to destroy another 4 or 5 laptops before he gets the experience to do things the right way...Learning by failure, isn't always the best way to go lol
In case of doubt: cover it with hotglue! 🙂
Maybe it's just shorted bga pads under the cpu from the bad reflow! Might be worth trying to reball it and reflow it again. As you said, the only fault was probably just the battery. Might get lucky, who knows 🙂 Or maybe those little bits of copper traces you found are ripped from underneath the cpu.
CPU reball and reflow is very expensive procedure (and at the point of removing the CPU-PCH, u could swap them with new one... )so it can be cheaper to replace the whole board, for data recovery it can be ok, but for a repair ..
@@user-kr8tp3ko8z Yea you're probably right, not really possible or even worth the effort.
@@anthonydenn4345 yeah he is right plus a cheap 50 dollar dell not worth it
@@anthonydenn4345 really its not even worth trying to repair to begin with but still love these videos he does great
@@mike-bj4dk dell xps is worth 50 dollar? wow
thanks for video. strange that, You at first go to repair battery, not a laptop.
You have too have a repair attempt fee Sorin. The customer obviously knew the chipset was worked on and they just prayed you’d be able too fix. That’s not on you but the customer . Your not the Sorin bank of free labour lol. Just my opinion
Exactly… you have to have a minimum charge, even if it’s just toke and gesture.
I would charge a no fix fee.other repair channels I watch do .
@@ColinTimmins don't toke and repair
@@silenthill4 lol 😝
Free? Even if you don't charge anything you still gain valuable experience
If not the chipset is the monitor thermal protection of the cpu try aluminium foil between the heat sink of the cpu and thermal paste
‘Re hot cpu bro’ 🤣🤦🏻♂️
Simple rule. If device was opened before not by you or your company so 20 pounds fee at start to cover first hour conducting investigation what was broken by predecessor. Regardless of the result.
Am si eu un monitor cu 2 camere...cum activez camerele? 🤔
After opening the battery to check for the fuse, could you charge the battery manually via the terminals using a power supply and bypassing the battery circuitry? I have tried it with fusion5 tablet and bridging two power button pins. It comes on and complains about low voltage, meaning the tablet needs 2 batteries of 3.7V whatever watt hour instead of the one it currently has. No charging via the charging port at all.
he can charge the battery this way but still cant use the battery because the bms board locked it u need software to unlock it, because it will refuse to charge/discharge
@@user-kr8tp3ko8z, i have seen it done on a smartphone by suppling 3.8V to the +ve terminal while the phone was connected to the charger as usual. It did work.
They burned the cpu and sent it to you for a magic repair lol that thermal cam saved your time
only chance for 'repair' would be a good used 'motherboard' from maybe one with a smashed screen, but otherwise ok, or screen from this put on a broken one, i have a sony 17 inch laptop that wont power up, has dead short on one power line, i'm suspecting the graphics? chip as it looks its got pretty hot in the past, browned the board around it
At 14:50 he says the fuse heater. What is he talking about? Thermal fuse maybe?
www.lonco-asia.com/pdf/product_category/SCHOTT%20SEFUSE%20D6SC%20battery%20fuses%20specification.pdf
@@electronicsrepairschool Thank you. I learned something new.
Where is the usual 'proper calibrated fuse' comment 😉😁
It looks like they tried to short the battery to disable the password
Yeah you gotta be good to fix someone’s else’s mistakes.
I think the board was in a fire or something, seems like it. then someone tried to clean it up, and noticed battery not function cuz fuse got heated
feels bad man, next time try to reball bro.
This is why none offers no fix no fee. People just abuse it.
Nice. You are Românian right?
damm that thing has been abused
either no fix fee or keep laptop for spares :)
Sa folosim analizorul de baterii:)
This is what I hated when I had a small shop. Waste of time taking apart people devices and putting them back together.
geebus christ even the battery has a complicated chip now a days just to waste a good repairable parts the future is bright .. GG to the next generation finding a software for a copper wire just to be able to use it
Awesome battery tool, why dont sender just rehot with rice
Given that there is evidence of high heat both on the CPU board and also with the battery fuse, I'm wondering if this was not actually a previous repair attempt, but both of those issues are symptoms of the whole laptop just getting "cooked" somehow (i.e. left in a hot car on a very hot day (or, I dunno, accidentally put in an oven?), to the point that it got so hot it started to melt all the solder).
In general, if a fuse is blown in something, you can't just replace/repair it like that, you need to find and fix the root cause first, or it'll just blow again for the same reason. It's suspicious to me that the battery fuse was blown, but when you repaired it it just started working fine again. If the battery was working normally otherwise then there would be no reason for the fuse to have blown in the first place...
heh, if you try to bake battery -> short inside -> rapid discharge -> fire..
You can't melt solder in a car even on the super hottest day on record in direct sunlight. Although such an environment gets rather hot, it doesn't get hot enough to melt metal.
I mean sure it can melt plastic, but it won't and can't melt metal. If it could, then your car radio wouldn't even work after a hot day. Think about it...
it had no screws, can u fanthom that?
write a question to the client. if the rest of the laptops are of the same origin and tell him it will cost you even if you don't fix it. this kind of sutitation stinks
Don't be depressed! Not all jobs end well!. It's electronics!
ReHot CPU is not a valid repair technique except maybe for data recovery on the worst Macbook model, the A1534
TBH, that processor is pretty slow, if it was a fast computer I'd be more disappointed.
Re-hot CPU, bro
buna ziua detin acest model de laptop Laptop Asus X552CL-SX143D cu procesor Intel® Core™ i7-3537U 2.0GHz am 4GB integrati in placa si un slot liber pe partea laterala scrie 1333 pe plastic langa slotul liber .. ma puteti ajuta cu detalii cati rami pot pune si care sunt specificatiile corecte stiu ca trebuie DDR3L si sa fie 204 pini Sodim 1.35v ..dar nu stiu frecventa corecta si capacitatea si oare merge si DDR3? sau neparat DD3L? cei de la asus pe facebook mi-au zis 1600Mhz apoi pe email de la suport au zis 1333Mhz nu stiu ce sa mai cred .. apoi un baiat ce face reparatii mi-a zis ca pot pune 8GB DDR3 1600Mhz 1.35volti dar Asus a zis ca doar 4GB pot pune.. nu mai inteleg ABSOLUT NIMIC! :(((
am scanat cu CPU Z si mi-a dat acest raport DMI Memory Device
designation ChannelA-DIMM0
format SODIMM
type DDR3
total width 64 bits
data width 64 bits
size 4 GB
speed 1600 MHz
manufacturer Micron
part number MT8KTF51264HZ-1G6
serial number 00000000
voltage 25.966000
manufacturer id 0x4D49
product id 0x304D
Tried to reflow the board and damaged it.
you have to charge even you have not fixed it, you spend time and in the end you do one repair, on battery... if I go with my car to service they will charge me even for bad diagnostic ...
@2891 user: Yes. Totally agree with you. If my car is parked outside my house with the fault that does not start and my trusted mechanic comes to my home; In advance I know that I will pay double rate.
On the other hand, if my car failed on a heavy traffic street and my mechanic comes I know that I will pay two and a half times more than a normal service and I will also have to pay for the towing service to the workshop.
A novice mechanic will go to see the car, he will not fix it but he charges me for the diagnosis. All the best.
That's a tablet laptop that's the two one one
fuse is burnt
Just rehot cpu bro!
Prior repair attempt fee time. Wasting time on stuff that was already screwed up by others.
"not worth trying to fix a laptop after someone already worked on that board" is not completely true. The real answer is - are fixing will be reasonable for rime and effort spent on fixing the laptop properly. Plus obvious drawbacks in case if real cause of your failure is lack of proper instruments (tools for BGA chip replacing for example). Or cost of repair turning out much more expensive like bad CPU or some proprietary chips, wher acquiring of these will cost more than remaining cost of laptop itself.
shame to sender
No power ,no charger no fix , capacitor 3
i am only disappointed in the customer who could have sent it to you in the first place, and you probably could have fixed it.. not so much after every component has errant solder balls all over the place :<
i mean "re-hot cpu" is incredibly unlikely to be a solution, even if you're desperate..
Hahahaha you are the best.
Why u don't take measurements???
mesurments for what - he saw that voltage of the battery is rising - means that the main power rail is present - he saw that the power button is read - means that the 3.3 is present
@@user-kr8tp3ko8z measurements for dumbasses brains to solder a miniature coffin for them, sure mr jesus here would love it
I think no-fix fees are reasonable especially when someone asks you to fix their “Hiroshima”
Umm ... I sorry. It took twenty minutes (video time) to figure out that a fully charged battery does not charge any further, as is the case with all ACER batteries. Overcharge can cause fires and Acer put this in the battery controller years ago after lawsuits. Batteries fully charged do not draw current since charging is overridden. Took twenty minutes for that? ...
How many laptops you got for repair with a fully charged battery? :D I'm only a human and yes, sometimes i do mistakes same like everyone else :D
Man, are you sure you know what you play with? First you repaired a battery that was not faulty. It was just charged and consumed only the top-off current which is very small. Then you started the laptop without heat-sinks and the CPU shut down because over heat. And concluded that the CPU is dead...because it heats up. What else should it have done?
Usually this kind of fault happens because a power supply does not start. Or, there is a lack of communication with modules like RAM, north bridge etc.Or, the processor doesn't return a correct result to a software test. And so on...
What I saw was some kind of groping around the tail.
Cheers!
Im not watching 30 minutes can someone just tldr, why is it not worth trying to fix after someone else worked on it?
it was not worth it to upload video
Laptops with that small board with ewerything sottered cpu gpu ram memory is garbage toy laptop
Maybe an oven job
yeap i am in the same opinion "after someone already worked", we have more than 1 fault to resolve, the first one ( never found,kkk) and the rest that he just fck up... ....
Subtitles in spanish please