Customer replaced a capacitor and the laptop went dead, what goes wrong? Can we fix it? Acer Swift 3
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- Опубліковано 7 чер 2023
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Nice repair. Just a theory, perhaps the third "capacitor" the customer tried to replace which was larger than original and obtained from a donor board was not a capacitor after all. There are other SMD devices which might look like a ceramic capacitor but are actually fuses, resistors, shunts, sometimes even inductors, etc). This caused the LDO to malfunction and took out IO chip.
I think you are right, is see a ferrite bead in parallel with a MLCC capcitor somewhere in the video.
sorin. Many of those who work in the field of laptop maintenance and repair do not do the work that you do. Well done my dear friend💪👏
thank you for telling what temperatures you use for hot air soldering
not everyone shares such information on youtube, thank you and best regards my master
and the best electronic dentist 🥰
Sorin, it would be cool to do an experiment.
How many caps you can remove from an old working laptop till he no longer works. Remove like 20-30 caps... to proove your point. Because in our newbie minds is always a thought that those caps are there for a specific task and we do not want that task to be disturbed. That's why everyone thinking about not replacing caps is bad. In reality is like you remove a 10cm stone from a 200m dam, expecting that dam to collapse because we removed a stone.
Well, that video is done, uploaded already, it will be publish in the next days :D
@@electronicsrepairschool Seems that Nostradamus was a little child compare to me!
@@Flavius-Tech Are you saying that you can remove 20-30 random caps, from a random working device and it will continue to work stable, 24/7 over years in 100% of all cases? No long term reliability affected? It is one thing to press the button and say "Look it is working", but there is also a blue screen and file system corruption after some time. Just to prove my point, remove caps from a SSD power rail and fs corruption after sudden power loss is on the horizon..
@@miroslavstevic2036 watch Sorin videos, not random caps, he knows where that cap is located and sometimes he says "this is a cap we have to replace". There is a famous common fault on the xbox, the solution is to take a cap out and leave it out, no replacement. I fixed a xbox this way and it is working for a year now. Just because you cannot believe/understand, it doesn't mean it is impossible
@@silviuguseila2552 Oh, what a prime example. You fixed a particular problem on particular device, which is basically a toy, and it is still working. It is easy to understand both math and logic behind a cap. And one can prove, mathematically, that removing a cap leads to additional uncertainty in the future. I have a capacitor book and I just replace it. If I spent hours chasing a problem, it is a minute more to replace it. Replacing a cap from a donor board is stupid, the component is grilled. If these caps serve no purpose they wouldn't be on the board. So manufacturer is stupid and we are smart, lets remove 20-30 caps from the board and use a laptop that way. No thanks.
A video describing how to deal with "solder balls" when replacing chips would be very interesting and helpful. Thanks for your excellent instruction.
Very inspiring, thank you Sorin, your videos getting better and better by the day.
Another interesting and entertaining teaching video. Please continue making these.
Thanks for another amazing video, we're learning.
Good lesson. Thank you Genius Sorin
More and more thanks to say, every time a lesson to learn. I hope in some day Ill be fixing mbs like you. It ll be a long road to take but ill not surrender.
Great video Sorin thank you.
Another customer is happy now. Great as always Sorin 😊
Great video. You had me at the edge of the chair, waiting to see if it would work.
Thanks so much Sorin. I just bought my 30v 5amp bench power supply a day before yesterday
nice job as always Sorin! But that case is strange, i too find it strange that the two things are unrelated that much - changing the cap and leaving the battery connected - and then the EC chip blows :D Probably the customer shorted some lines during the repair
most likely he touch something with tools without even realized it.
Гледат 2 клипа и си повярват :)
Mr. Sorin is amazing repairman.. Thanks for this tutorial video everytime i watch you i amaze.. ❤👏
Your the GOAT master, im a technician in the philipines, i've learn so much from you sir😁❤️, SALUTE👍👍👍
you did it again,good job
Amazing combitation of the knowledge and experiense.
All those capacitors are there for a reason - so the laptop will work stable at manufacturers given parameters. But it doesn't mean one or two missing capacitors on the power rail will make a noticible difference. But if you start to take one after one, at one piont laptop can start to work unstable, especially in the harsh evirement.
It is like the screws on your car - one or two loose screws will not affect, but better don't take out all the screws.
These ldo chips and few other chips on a laptop have some weird markings on them even an internet search won't help much but the fact that you recognized it's a 3.3v ldo chip is just amazing and a nice fix
Wow! Sir. Amazing ❤❤❤ Solutions. Keep up the good work.
Great video thanx 🎉
The component 3 v power as fault was compelling as I watched your understanding of the device. And made the repair as where very close solder need. Thank you for this lesson. While no job flow as to earning power, I hope you understand I truly enjoy learning the particular functions. Where as I undertake repair at times. Regards from Washington State, US M.
?
Thank you
Thank ya'll Sorin. You did a fantastic job. The customer should remove the chip he just put in. The capacitor. It will fail and take down the laptop again if it shorts. 50 50. Sorin should remove it and leave it empty if it goes to ground. Good job Sorin, lucky customer. Next time instead of an incorrect cap leave out like Sorin does if he sees two more just like it. Like he says, "no upside".
Thanks!
No Capacitor, No Short! - Quick question though, if it's better/safer to just remove the capacitor and not replace it, why is it there in the first place and why is it not 100% required? Thanks Sorin for another great video :)
Another successful cyber surgery with a lot of passion! I don't know if I could get that chip with like 100 balls perfectly in the right place.
Super IO with balls?
a) Size reduction.
b) That there are no external terminals with the main objective of inhibiting or making it difficult to follow the lines (trajectories) of the circuit and that the technician decides not to waste time and that it is better to change it (replace it) and better still force him to buy the dedicated team for reballing in a "professional" way.
c) "Top-tier technology" "The future is here" "Update for new changes". How many more of these catchy slogans will you manufacturers need to try and convince me?
My personal opinion on this new chip. Is it necessary to expose it in my native language here? On the other hand, excellent repair yours. A sincere congratulations. Thank you very much for sharing since that IC is not going to surprise me anymore. All the best
you trying to put motherboard backwards was hilarious x)
Amazing Sorin ! Congratulations once again! But, I would like to know where did you send the current to find the shorted ic chip? Thank you very much!
he injected 1.8 volts to the 3.3 low dropout regulator output and found that the Super IO consumes not normal current, thus indicating that its shorted
@@user-kr8tp3ko8z Too kind ! THANKS
Nice one
well done
My guess is while soldering he shorted the 3,3V rail to higher voltage (by touching some pad or via) and the regulator couldn't pull it down. I did such mistake more than once doing my hobby projects.
Absolutely. Most devices that I've destroyed beyond repair were not shorted to ground but to high amp, +12V or +24V sources.
Plus, practically unprotected I/O chip traces are spread all over the board, talking to and controlling many things, high chances to touch it by mistake.
@@miroslavstevic2036 How did you manage that? Please clarify, I would like to avoid making the same mistake. Thank you
Good practical in laptop
Does the chip need reprogramming?
Thanks sir sharing your experience
For us beginners, it would be helpful to state what 'current' you're setting the PS to. We can see voltage but not current. Thank you much for the service!
u can see the current when he is supplying the power
the current was set to just over 200ma i think ... because the shorted component was drawing around 200ma
at a lower voltage it drew i think 180
You can also solder caps with soldering iron it is not very harmful for board
🥰😁😄🤓😃😎
Oh My Goodness...
You Gota Our Same As My Model...
Acer Swift 3 SF315 52G 55AA
I Was Wished Some 3 Years Ago, And Wishing Do Some Day You Will Be Trying To Fix Same Model Laptop...
It's Same Motherboard...
I Learned Lot Off Things From You Sir...
"Greetings To You Sir"...
Thankyou Very Much For Teaching With Various Aspects...
Today I Am More Confident Than Earlier Was...
I Will Come Back Soon To Talk With You...
And One More Sir Can You Do Some Sessions For Laptop Motherboards Sections, Then All Sections Explained. With Most Likely Common Faults And How To Identify... Even In Some Cases Without The Thermal Camera...
Thankyou Very Much Sir...
🤓😃😎 Your Electronics Student...
Actually I Have Completed My Education In BSC Computer Science 3 Years Graduation, Then I Completed MBA In Finance Post Graduation...
But I Have Interest In Electronics Also...
a super IO with balls, factories pass to the next level! thanks, Sorin.
PRO tip for caps: Try the N9100 tweezers that go with the ATTEN ST-9150 station. Turned my life 180, now I barely use the soldering iron.
Might need a bit of help from the hot air station if you have a larger ground plane (or you can just increase the temp, I'd rather keep it lower to preserve the tips life), but the fact that you can just pick-up and drop them back in is a game changer.
20:24 - What material is that pad you’re using to cool the chip?
Great reapir as always sorin. would care to explain how the short that was seems to be because of ldo was actually realted to super io chip ?
There is no connection, customer probably touch something while repairing without noticing, we all did that at least once :)
I don't understand this either. He somehow moved from ldo chip to EC chip to fast.
Hi. fantastic work as always. i don't understand that. was the EC pre programmed ? where did it get its programmed ?
it gets programmed in the system ... itself ...
Ok, how much do I have to pay you to come learn from you in your shop? Nice job sir!
Happy to see i could be repaired amazing 😂
Your friend had to lose the ITE 8987 so we have a free lesson about risky caps 😂
Good luck
*Sorin. What is the reason not to solder the capacitor back with a soldering iron? Quick, easy and no stress for motherboard...*
reason is we have to check the capacitor voltage max rating .ex( the capacitor shorted is 30v rating. if we replace with 6v capacitor as a max rating then it will be soon shorted).. i am newbie with one year experience ..correct me if i am wrong
too much effort !!
there are more capacitors than necessary on the power lines ...
Sorry Sorin, i disagree here completely! In times, where manufacturers get attention on EVERY single unnecessary part and reduce everything to the absolute minimum for cost-saving, i really don't believe, that those caps can be removed without any downside... There must be an effect like more ripple from the switching supplys etc. and on high load appications this will result in unstable operation or other parts will die more quickly.
I've designed a power supply (VRM) module for the old socket 7 boards (like Necroware) and i placed a lot of different caps to get rid of the ripple and i have to tell you, that every single cap i placed was important for the resulted clean DC voltage... sure the most CPUs ran at average load without issues... but with higher load then, some refused to run stable.
In 20 years someone would come back with laptop and said something about unstable system after repair, don't you think? If you only have one cap on input and that one fail, yes it need to be replaced. Even Sorin do that. But if there is three and one fail and 9 others are few cm away on same main power line than no, you can skip it without any problem and even with oscilloscope it will be hard to notice a difference. Try it.
@@gorjy9610 ah you mean, they place those bc they have too many in stock? I measured a lot... and if this is... let's say 20 years ago, i would agree with that.
But not these days.
Manufacturers are saving every component... bc every single little component is costing money. So if it's really that unimportant, they would have saved it, trust me.
Maybe often you're lucky and the shorted cap was not that important on that rail... but otherwise... caps don't mainly die due to just getting voltage... they die bc they're getting charged and discarged... so if a cap dies, there are good chances, that it WAS used and even undersized... (when you don't count those, that die due to bad quality).
Sorin is not testing the Laptops with Furmark and prime95 for 3 hours after revoving caps... also 95% of the people don't do it... but is it a repair, that is proper? in my opinion NOT.
every component other than the caps on the power line ... would be required ... however the capacitors on the power line are all in parallel ... removing a few ... would not destabilize the system ...
when the system is designed ... more capacitors than are actually required are put on the power rail ...
Hi everyone. got a question what maybe the cause when the IO chip is beeping on the gate when testing in beep mode. does it really mean the IO chip will be fault or. and where can I put my power supply if want to check the faulty
sir what type of air machine are you using
Please what the name of that device for scanning chips taking enough charge
3:00 - But we can agree in one thing. We make them believe in something, they do it then machine dies, then they really dig deep into knowledge to solve problem, then they learn :)
@Sorin, you make conclusions "customer was soldering capacitor with battery plugged in." - Who knows what else he did wrong, and in what moment, where he shorted what. My advice is just ignore all info. It will lead you on wrong track sooner or later. I personally ignore all info from customer, all info from colleagues, and investigate on my own... (Nobody has bad intentions but they will not mention all details and will lead me to wrong track... not any more.)
14:32 - Looks like chip is removed from place on right upper corner, GND contact is soldered but chip is not there?
No I don't trust you,...that is not a nice laptop! jk 🤣 Your passion for electronics is unsurpassed. You actually hype me up to repair stuff! Love it, thanks ❤
I have a laptop with 3.3, 19, and 12 v rails.. when i put power in it. The chip is called L8=7L is getting smoking hot. I guess maybe i have the same issue. ???
Sir ,Where do you buy brand new chip?
I don’t understand why at +/- 5:28 you say, if you remove a cap “just leave it off”, why? I’ve remove many caps from devices, and then replaced them with functioning ones and the devices now work. If a lightbulb dies, do you not replace it?
Also, at 7:42 you are checking the chip’s outputs by testing its neighbouring caps [on resistance mode?], are you looking for a possibly shorted cap? Please clarify, I’m really trying to learn. Thank you kindly
I want to come learn with you
hello sorin, did u also replace the 3v/5v chip?
the chip is good no point of replacing it
Indeed, that chip is a source of confusion, is getting hot because the output is shorted, not because the chip is faulty
@@electronicsrepairschoolThanks! I was so confused when you just ignored "hot" LDO chip! And it was burning hot!
the cap was to small in value the ldo was not able to regulate the transients of the super io the io kept on restarting usually at 2-13 msec eventually failed good thing it died first and did not took others with him , it`s not bad to put a slightly higher cap on a dc line (never on data lines there it must be exactly the calculated value) BUT you don t put a smaller value one a lDO this ic`s like the pmics dont tolerate more than 3% deviation which means a few tens of milivolts when the super io fails in this kind of way it will certanly damage the other components because repeated restarts of this chip trying to sequence up before the supplies have discharged leads to failure when we debug this ic`s we call it the ninja mode , after you read the flag registers from the super io memory or whatever pmic`s it will become clear what happen but usually the feedback paths to the ic are used to bleed the charge from the rails when it`s powered down then a programed delay like SEQ_DOWN_POSITION_n[10] = 1'b1 will call for a delay before powering up again , i only worked with broadcom lt and texas this ones from asia qualcom hsilicon are quite different from ours
btw the super i/o and pmic`s are programmed for undervoltage and overvoltage and current it all depends on the designer how he will choose tolerances if they are tight it sure fact to lead to the destruction of the ic and also it`s a known fact at the design when somebody does it it`s because they want it to fail , tighter tolerances lead to lower costs as the components required can be smaller in value frequencies higher and overall the device smaller and less costly the synchroneous converters this pmics control run up to 3mhz which is very high soon they will be able to run higher and fail more often
One thing I don't understand. He first found this LDO chip that was hot ..but still he did not do anything about it . Why?!
Sorin, have you done a video, on a laptop that wasn't nice? Just thought I'd put that question on their😁
no.... all laptops are nice ... there are those ... however which are cheap ...
and sometimes ... not worth spending too much on their repairs ... however
i have never seen sorin complain ... or even show distaste ... for him i think electronics are like friends ...
in this video itself .. expressed how a working board ... almost feels alive 🙂
@@protonx80 So you're in the habit of speaking for others .Is it?
@@anglo-saxonenglish3565 not to children ... however i did not know there were kids here who do not understand this is a public forum ... everyone speaks ...
anyway ... dont worry ... youll learn in a few days ... that the comment sections is ... a like a public discussion
@@protonx80 So you not only speak for other people, you also make stupid assumptions. Ok got it, good to know. Now we really are building a character profile.
I would use low melt solder , which makes the job more expensive but safer
At least I would add some 183 degrees solder while de soldering
Yeah Sorin is dodgy but 99% of the times I agree with his policy
Sorin's soldering / Desoldering skills are beyond normal ... i have never seen him either clean up the pads ... nor use extra solders for the extremely fine chips he desolders and then solders back again ... and in almost 100 percent of the cases ... he gets the chip to work ...
it is ... magic 😉
@@protonx80 I was talking about the customer, anyway adding some solder it’s not bad at all
Hello, does anyone know what happened that there was no live broadcast today? I hope all is well with Mr. Sorin, greetings🤝👋👋👋👋👋
I must hail you sir
❤❤❤
Just realized that ROSIN is an anagram of SORIN lol
0:44 the customer should have change it in the next video...LOL!!!!!! thats the reason doesnt work........more LOL!!!!!😆
that sweet taste of victory....
👍👍👍👍
it's been 5 days you haven't uploaded new video
I hope you are doing well Mr Sorin😢
Hardcore gaming, Diablo 4 happened :D
❤❤
Respectele mele domnule Sorin! Întâmpin o problema cu un laptop alienware area 51m cu limitarea de putere pentru placa video de la 180w la 50w. Am verificat absolut toate temperaturile și sunt in jurul de 70 grade la procesor și placa video. Am instalat hwinfo și am văzut că limitarea se face când SODIMM ajunge la 90 de grade. SODIMM însemnând plăcuțele de rami. Am înlocuit plăcuțele cu altele și face absolut la fel. Ați putea să mă ajutați cu o părere? BIOS actualizat la zi, Windows curat absolut tot. Pare fii o problema hardware.😢
Cool..
Now we can't bully anymore Sorin about his dodginess :(
@SussyMcbutter: I am also worried that this channel may lose its charm
he mentioned in this video that ... the people in the comments are the ones who are right 🙂😉
we can ignore this video ... or we can assume that the fault was not due to the resoldering of the capacitor .. but due to some other mistake which happened simultaneously ...
|😉😉
@@protonx80 Sound's like a plan .
I always put back the original capacitor. I cut it in halves en resolder them back😜
why ?
@@90SecondsofAviation
Because if you don’t you getting bad comments. And it’s working great without the capacitor.
@@MrRvdbeek lol gotcha ya joke
@@MrRvdbeek LOL thats great
Wouldn't it be better to replace the capacitor? Surely it was doing something?
The customer burned the io chip haha
💪💪💪👏👏👏
tanx
S is for Sorin…
…S is for Smooth 👌
Donor capacitor does not match the voltage? Its voltage is less than 19 volts.
Congrats on this one, Sorin. In spite of your big knowledge, you are also a lucky man! (EC programmed from factory, I mean)
Many laptops can deal with a blank EC chip and program it on first boot from a partition in the onboard flash memory
@@tim0steele of course, I know. I have a couple of labs and a couple of SVODs 3. But after all…lucky! 8-)
it was probably programmed by the board ... automatically
@@protonx80 agreed
It's an Acer, it's lucky they even run...
Hello 🤝👍👍👍👍👏👏👏👏👏👋👋👋👋👋
Short on main power rail
Sorin - It's very Bad
No short on main power rail
Sorin - it's very bad
Viewers - what ? 🤔
Just need bio programmer
He forgot to disconnect the battery HYYYAHHH
lol why you sigh so loud when you foind the heatring on the chip...lol a hard day for a hard job lol
You're just lazy, remove and replace caps with hot tweezers, no risk whatsoever.
Sorin, how did you recognize instantly that it's the 3.3v LDO