coming from an old school electronics background, i’m amazed how repair tooling/technology has evolved, especially with how you can remove & resolder a multi pin device so efficiently. i worry that that hot air gun may damage components & tracks. surprised we don’t have low temp solders these days. still same old ~350deg C MP alloy as 60 yrs ago. noted that to remove some component, you best first ADD solder & flux when logically you think you should first remove. i’m glad i don’t do this work anymore as visual acuity would be taxed. but your video close ups are quite amazing. like that your comments are kept simple & your focus is on getting the results & not on “how it works”, which has been my (long term) focus. looking at that power controller “typical use” schematic you displayed, i could not figure out the details of how it worked. but hey, who cares, is there a need to know?
This was an excellent repair video. More often than not, I try to look up the value of a device when I get it just to have an idea of what I'm working with. In some cases, the more it's worth, the higher the risk, the higher the repair cost. Or if the device has a lot of failure complaints, not to bother with it. This was a good learning experience, thank you.
I think I remember why you ordered the mosfet, but that's because I've been watching so many of your videos. You put a different mosfet in there and it was unbalanced. The middle one was doing all the work. But in general my memory is very bad. I'll go into the kitchen and forget why I wanted to be there.
Maybe you should start a register. For each laptop you receive you write the model number, the issue, what you found and how you solved it. If you have to wait 1 month for some part you can come back to what you wrote last time and next time you receive the same laptop or close enough with the same issue or close enough you can use that knowledge easily.
Sorin you fixt it this is the one that you can repair because you have enough ohms on the gpu but you replaced one mosfet to check and you didn’t have power so you think it’s the power manager chip. So you ordered one and a mosfet. And I did trust the man from UA-cam watching many videos (all of them) and you fixt the expensive laptop and we also are happy you did it. So thank you for the humour. And nice fix
Exactly. I have had looong delays waiting for parts for customers devices because of this. Also, it has had a knock-on effect on all the other courier companies because people are using them in favour of Royal Mail so all package delivery in general has been awful over December and early January.
Now i had the time for watching the full video.. And i have the hope, that your solve of the problem, maybe my solve on the Nitro.... I will check tomorrow... .... I think the old chip was faulty and has killed the mosfet... so you can´t see the problem with the 12V on the mainrail on the 1. Video!? Anyway.. Thank you very much for that many very good videos! I learn a lot !!!
You can tell when someone has been doing something too long and is under pressure to go fast, because they shortcut to save time, ie, it's why I check pads before putting a part back on.
You do great work. My laptop developed a motherboard issue. It no longer recognizes the internal hard drive everything else works. It did recognize the drive before I updated the bios. Could that have done something to the machine?
The bios update must have defaulted the settings. Check for the correct hard drive settings, and secure boot if present. In any case, see if it recognizing another similar drive before repairing anything.
Nice work ! I have seen lot of your videos and you always say that a burning chip is a dead chip (e.g. for super IO) with an exception for power supply chip. But here we have an example than even chips that supply no power can be hot because of an issue somewhere else ! Good to know 😉
the chip was only controlling the gates of a pwm pair. One was short to the ground (no charging), maybe it was also short to the gate. But why would a chip output shunt the open mosfet to heat up? I want to know too!
If you investigate the datasheet there is no technical information about this component at all (only two pages). What Sorin looked at was the external circuitry attached to the IC to make it work in this particular application; which makes its repair more impressive (admirable). The cost of the piece is $13US here in North America. Why doesn't Renesas make the information available? I think it's a topic for Discord. All the best.
With my self doubt I think I know what you were going through with this repair. ;P In the same situation (with your computer) I would probably try using another machine for work and in the meantime, with the main system offline, you should be able to watch through all the relevant videos before formatting. You could use a capture card to record the videos from the likely compromised system without transferring any files. All it would require is a HDMI signal so no issues there.
I have the same problem on a acer nitro 5. The intersil chip was faulty and i put in a new. The laptop is working only on the battery! It´s like the laptop don´t know that the charger is plugged in .. vccin bad or a other sensing line? I have put a "propperly fuse" ;-) on the first mosfet... now the laptop running from the charger, but it dosn´t know it and it is not charging the battery and tells me i can not make a Biosupdate on akku.... But it running over houres with the same battery status... I have no voltages for the intersil-chip, so i can´t check it! greetings!
I must be forgetting something? How did Sorin determined the mosfet is short and not just open? I am talking about 26:09 . Sorin finds the first small mosfet with zero ohms between the source and the drain, suspects bad, checks source to gate and finds no conductivity. Thinks it is strange. What is strange here? Is it not exactly how a good but open mosfet should behave on diode mode test? In the end this mosfet turns to be a good one. So, what was strange about it? I thought maybe he meant this is a strange situation in general, not about this particular mosfet. But he removes it first! Then he goes to the second small mosfet, tests only the source to the drain, finds zero ohms, does not even need to test the gate, and decides it is definitely bad. Removes it only after the "strange" one, which was good. It looks like Sorin is actually not being guided by his test results, but mostly by his intuition. I mean from a point of view of a newbie, he is not following the testing rules, but ends up completely right in he end anyway. This looks to me like an intuition based on experience. What an I missing here?
You‘re not missing anything, you said it „This looks to me like an intuition based on experience.“ and that’s true. If you’re on this business you don’t really take the time to check everything exactly (unless you have to) and think about laws and rules, your experience will be much faster.
He did not reset the gate (i.e. shorten the gate with source). So it most probably was active. (closed bridge between source and drain). Hence the 0 Ohms.
Sue Diem Sorin is an INTP personality type of which have very strong intuition. His most dominant cognitive functions are introverted thinking and extroverted intuition (respectively), which makes for a very powerful problem solving pair of cognitive functions. Richard from the channel, "Learn Electronics Repair" is also an INTP personality and his methodology is very similar to Sorin's. Alex from "Northbridge fix" is an INTJ type (introverted intuition, followed by extroverted thinking) which are extremely adept at intuitive problem solving.
It's understandable to forget especially when a diagnosis is nothing special and even more when you have something new everyday, it's the brain's way of making able to store new information but, good sleep and omega 3 will help a lot with memory.
(31:05) Dance school? You will bankrupt the Bolshoi... think twice! lol. (34:35 - 34:55) American programs? And I see two channels of youtubers from the United Kingdom. What a paradox! ... well, we are in a global world with the internet. (38:14) Harman Kardon sound? I saw your face light up. Did it bring back memories of the late 60's, 70's and 80's when were they popular or common in middle-class homes? Excellent repair. Thanks a lot for sharing. All the best.
Buna seara Domnu Sorin ma puteti ajuta va rog ? Can someone please help me repair an Asus R451UA that won’t turn on or charge. after bios programming. it just flashes the led 1 time after i press the power button.
Are u sure that u flashed the correct bios file? On Asus PC Mainboards you can harvest the serial number, MAC and UUID with the FD44 Editor from the old bios backup and put it in the new bios bin file. Did u do that?
I have two TVs in my shop that I have fixed but I forgot to tag them I forgot about the owners. The funny part is that anyone can claim them and I will have no idea if they really the real owners
you making every time mistake with new arrived chips they dont have solder on them and have thin dirt or corrosion or dont know how to say that but yeah every time you straight from box try to solder instead of cleaning mosfet put little solder on it nad bum instant solder them. But good job on end ofc
3:58 Oh come on - just spend 1minute, to grab a small sticky note, and write on it one sentence - what you did, where is fault and how to fix it. And then put that sticky note inside the chassis/case -for future, when new parts arrive. is it really that hard, to do it?
use a phone and text messages on jobs u meef to remember. u just use as a log. i dont send the text, just make logs.. not 💩logs, text logs. whenever i find something to study or look at later i send it via share to my name in texting contacts.
A short pencil is better than a long memory...
coming from an old school electronics background, i’m amazed how repair tooling/technology has evolved, especially with how you can remove & resolder a multi pin device so efficiently. i worry that that hot air gun may damage components & tracks. surprised we don’t have low temp solders these days. still same old ~350deg C MP alloy as 60 yrs ago. noted that to remove some component, you best first ADD solder & flux when logically you think you should first remove. i’m glad i don’t do this work anymore as visual acuity would be taxed. but your video close ups are quite amazing. like that your comments are kept simple & your focus is on getting the results & not on “how it works”, which has been my (long term) focus. looking at that power controller “typical use” schematic you displayed, i could not figure out the details of how it worked. but hey, who cares, is there a need to know?
Always learn something, always brings a smile to my face. Thanks Sorin.
This was an excellent repair video. More often than not, I try to look up the value of a device when I get it just to have an idea of what I'm working with. In some cases, the more it's worth, the higher the risk, the higher the repair cost. Or if the device has a lot of failure complaints, not to bother with it. This was a good learning experience, thank you.
Pawn Stars is entertaining. Great Video. I appreciate that you share your mistakes and success.
I think I remember why you ordered the mosfet, but that's because I've been watching so many of your videos. You put a different mosfet in there and it was unbalanced. The middle one was doing all the work. But in general my memory is very bad. I'll go into the kitchen and forget why I wanted to be there.
Salut Sorin.
De când te urmăresc am învățat o grămadă de lucruri și am reînceput să repar laptopuri, deși renunțasem.
Mulțumesc frumos!
Sorin takes off the blindfold: "WoW this is an expensive one" 😇
Good job mate 👍
300k sub's bravo sorin
great video sorin but i could not see your cursor on the diagram of the power management chip and the diagram is blurred ...
Amazing work Sorin. Another customer is happy! ☺
Thanks sir, a very good job
Am slowly becoming a student wth distinctions.thankx Sorin
Hello... i was about to tell something but im afraid i forgot !!! Doesn't matter . Nice video Sorin , thanks .
I'm happy too you fix it this finggi
Another great video. Certainly learned something today. Keep up the good work.
Great repair and thanks for showing the re-soldering. It scares me how small these parts are, I dont think I would attempt this!
Nice video Sorin :-)
You are the man.
Maybe you should start a register. For each laptop you receive you write the model number, the issue, what you found and how you solved it. If you have to wait 1 month for some part you can come back to what you wrote last time and next time you receive the same laptop or close enough with the same issue or close enough you can use that knowledge easily.
Sorin you fixt it this is the one that you can repair because you have enough ohms on the gpu but you replaced one mosfet to check and you didn’t have power so you think it’s the power manager chip. So you ordered one and a mosfet. And I did trust the man from UA-cam watching many videos (all of them) and you fixt the expensive laptop and we also are happy you did it. So thank you for the humour. And nice fix
Good video , learn a lot from your video 👍👍
Royal mail still have piles of undelivered Christmas cards. I expect your ICs are in amongst them.
Very Good .
You are very good
The UK had a lot of postal worker strikes the last few months, Prob why you never got that delivery
Exactly. I have had looong delays waiting for parts for customers devices because of this. Also, it has had a knock-on effect on all the other courier companies because people are using them in favour of Royal Mail so all package delivery in general has been awful over December and early January.
well Sorin you had me fooled :) I was literally like waiting on the blind folded Sorin :)
Can you fix the heat pipes
So close to starting that dancing school. Next time maybe.
37:35 - Maybe thats the reason why customer emailed twice :D
Now i had the time for watching the full video.. And i have the hope, that your solve of the problem, maybe my solve on the Nitro.... I will check tomorrow... .... I think the old chip was faulty and has killed the mosfet... so you can´t see the problem with the 12V on the mainrail on the 1. Video!? Anyway.. Thank you very much for that many very good videos! I learn a lot !!!
Sorin, I finally just had to start keeping a written journal of what I work on so I can "remember"..
very super amazing fix 😁
the microscope so blurry sorin. but amazing lesson video
Thanks & great job.
good fix
i think it was the video about the laptob with fan controle probleme
Amazing wirk Sorin, I enjoy watching your videos.
You can tell when someone has been doing something too long and is under pressure to go fast, because they shortcut to save time, ie, it's why I check pads before putting a part back on.
You have to back up your data frequently and have internet security programs. Have a progress record of each of your repairs.
Great reminder for me to write it down.
S is for Sorin…
…S is for smooth 👌
Would you be able to fix a sinbans tablet no power
If the mosfet isn't shorted we are changing the channel name to dancing school............LOL
You do great work.
My laptop developed a motherboard issue. It no longer recognizes the internal hard drive everything else works.
It did recognize the drive before I updated the bios. Could that have done something to the machine?
The bios update must have defaulted the settings. Check for the correct hard drive settings, and secure boot if present. In any case, see if it recognizing another similar drive before repairing anything.
Mosfet was faulty or burnt
Nice work ! I have seen lot of your videos and you always say that a burning chip is a dead chip (e.g. for super IO) with an exception for power supply chip. But here we have an example than even chips that supply no power can be hot because of an issue somewhere else ! Good to know 😉
the chip was only controlling the gates of a pwm pair. One was short to the ground (no charging), maybe it was also short to the gate. But why would a chip output shunt the open mosfet to heat up? I want to know too!
If you investigate the datasheet there is no technical information about this component at all (only two pages). What Sorin looked at was the external circuitry attached to the IC to make it work in this particular application; which makes its repair more impressive (admirable). The cost of the piece is $13US here in North America. Why doesn't Renesas make the information available? I think it's a topic for Discord. All the best.
"I have seen a few videos on you tube and I trust him" LOL. Good fix of this expensive laptop. That is why the owner wants his laptop back LOL"
where do you order your chip replacements?
Sorin is starting a dancing school?!
With my self doubt I think I know what you were going through with this repair. ;P
In the same situation (with your computer) I would probably try using another machine for work and in the meantime, with the main system offline, you should be able to watch through all the relevant videos before formatting.
You could use a capture card to record the videos from the likely compromised system without transferring any files. All it would require is a HDMI signal so no issues there.
I have the same problem on a acer nitro 5. The intersil chip was faulty and i put in a new. The laptop is working only on the battery! It´s like the laptop don´t know that the charger is plugged in .. vccin bad or a other sensing line? I have put a "propperly fuse" ;-) on the first mosfet... now the laptop running from the charger, but it dosn´t know it and it is not charging the battery and tells me i can not make a Biosupdate on akku.... But it running over houres with the same battery status... I have no voltages for the intersil-chip, so i can´t check it! greetings!
My Toshiba laptop powers on but it freezes immediately after showing window logo. What should be the main fault?
you need to make a note and stick it in the laptop for reference later on
I must be forgetting something? How did Sorin determined the mosfet is short and not just open?
I am talking about 26:09 . Sorin finds the first small mosfet with zero ohms between the source and the drain, suspects bad, checks source to gate and finds no conductivity. Thinks it is strange. What is strange here? Is it not exactly how a good but open mosfet should behave on diode mode test? In the end this mosfet turns to be a good one. So, what was strange about it? I thought maybe he meant this is a strange situation in general, not about this particular mosfet. But he removes it first!
Then he goes to the second small mosfet, tests only the source to the drain, finds zero ohms, does not even need to test the gate, and decides it is definitely bad. Removes it only after the "strange" one, which was good.
It looks like Sorin is actually not being guided by his test results, but mostly by his intuition. I mean from a point of view of a newbie, he is not following the testing rules, but ends up completely right in he end anyway. This looks to me like an intuition based on experience. What an I missing here?
You‘re not missing anything, you said it „This looks to me like an intuition based on experience.“ and that’s true.
If you’re on this business you don’t really take the time to check everything exactly (unless you have to) and think about laws and rules, your experience will be much faster.
@@leerzeichen1910 Wanted to know if I am following the idea. Thank you!
Sorin seemed to have said gates were connected.
He did not reset the gate (i.e. shorten the gate with source). So it most probably was active. (closed bridge between source and drain). Hence the 0 Ohms.
Sue Diem Sorin is an INTP personality type of which have very strong intuition. His most dominant cognitive functions are introverted thinking and extroverted intuition (respectively), which makes for a very powerful problem solving pair of cognitive functions. Richard from the channel, "Learn Electronics Repair" is also an INTP personality and his methodology is very similar to Sorin's.
Alex from "Northbridge fix" is an INTJ type (introverted intuition, followed by extroverted thinking) which are extremely adept at intuitive problem solving.
You happy so we r happy🙂
Love the while, when U find out, Ur working on 3000pounds laptop😂😂Nice video, TY😊
this laptop is £1.499 MSRP not £3000
speaking on memory - my memory is so bad i get lost counting to 3 and --------- there was something else but can't remember now
It's Magic
In laptop motherboard asus or hp is better?
Man, if he did 100 laptop since this month - of course - I wouldn't remember anything anymore
One month ago repairing daily it's eternity
Soring can I ask why you did not take the board off? Because its too time consuming? Thats not ideal on any device you know.. love your work tho
u must remove anti-corrosion layer on new chip before solder
How? Just put solder and wick it off?
So...what do you say about 2023.....year of surprises!!??
It's understandable to forget especially when a diagnosis is nothing special and even more when you have something new everyday, it's the brain's way of making able to store new information but, good sleep and omega 3 will help a lot with memory.
Sorin I’m a mechanic and I can’t remember what I did last week lmfao.
Nu ai testat daca se mai incinta chip-ul de la controlleru de incarcare! :) Poate o sa se strice iar.
(31:05) Dance school? You will bankrupt the Bolshoi... think twice! lol.
(34:35 - 34:55) American programs? And I see two channels of youtubers from the United Kingdom. What a paradox! ... well, we are in a global world with the internet.
(38:14) Harman Kardon sound? I saw your face light up. Did it bring back memories of the late 60's, 70's and 80's when were they popular or common in middle-class homes? Excellent repair. Thanks a lot for sharing. All the best.
👍
Look like under stress Sorin formatted not only his Windows lol ;)
👍
Dont understand, why didn't those mosfets also getting hot? Maybe u could solder back the old chip, this lap is not trash lol..
Soren does not trust Soren :D
Cool..
You still need to open the dancing school 😂 you took one month to repair mosfets
Sorin ..... if you put your content out on ODYSEE at the same time as UA-cam, you would not have lost any of your video content
Notebooks with OLED screens are no longer so expensive, you can find notebooks with OLED screens even starting from €700
Buna seara Domnu Sorin ma puteti ajuta va rog ?
Can someone please help me repair an Asus R451UA that won’t turn on or charge. after bios programming.
it just flashes the led 1 time after i press the power button.
Are u sure that u flashed the correct bios file? On Asus PC Mainboards you can harvest the serial number, MAC and UUID with the FD44 Editor from the old bios backup and put it in the new bios bin file. Did u do that?
Salut. Încearcă un blind flash la bios, pe HP și Acer am făcut așa ceva, o combinație de taste la pornire și rescrie biosul de pe un stick
👏👏👏👏
I have two TVs in my shop that I have fixed but I forgot to tag them I forgot about the owners. The funny part is that anyone can claim them and I will have no idea if they really the real owners
as long as it is not hunt3r b1d3n you're safe :)
I would like to have so "bad memory" and fix things anyway so easily, hahaha
🎉
you making every time mistake with new arrived chips they dont have solder on them and have thin dirt or corrosion or dont know how to say that but yeah every time you straight from box try to solder instead of cleaning mosfet put little solder on it nad bum instant solder them. But good job on end ofc
The tile should be "fixing a laptop while having Alzheimer's".
31:23 so funny lmfao
if you are not right you go to run a dance school :))))
3:58 Oh come on - just spend 1minute, to grab a small sticky note, and write on it one sentence - what you did, where is fault and how to fix it.
And then put that sticky note inside the chassis/case -for future, when new parts arrive.
is it really that hard, to do it?
💯💯💯🖒🖒💯💯❤❤
this laptop is £1.499 MSRP not £3000, you should check the price before talking about this
use a phone and text messages on jobs u meef to remember.
u just use as a log.
i dont send the text, just make logs.. not 💩logs, text logs.
whenever i find something to study or look at later i send it via share to my name in texting contacts.
you need myphoneexplorer anyway, it installs mpe notes. excellent for short memos.
Gaming laptop with no ram slots!! 😭
Its not a gaming laptop.
Its a thin and light laptop intended mostly towards creators
Not everything with gpu is gaming laptop :)
This laptop is made horrible for its price and spec... Doesn't even have a RAM expansion slot
😂 what
Can you fix the heat pipes
My Toshiba laptop powers on but it freezes immediately after showing window logo. What should be the main fault?
Can you fix the heat pipes