Sorin, above two comments are bots made to scam people. I've tried to report them but you can add filters for your chanel so words like "Flixzone" won't appear.
Did you have to buy any tools? I was trying to fix my laptop but a chip was burned last night due to the broken DC jack. Now I dont know if It is safe to replace the DC jack and to test on the mainboard one more time
@@krystelfreeze4906 try to learn from this channel and do something when you ready. If you just want to fix ones with no tools why these guys don't work with bare hands?
I have no idea if I'm actually learning something or not, but it feels like I know more than when I first started watching this a few months ago! Thanks guy
This guy is brilliant! So honest let’s you see what he does. I have a background in electronics, but fixing laptops is very very different from theory. He goes from problem to solution in the most straight line using his immense experience. I’ve learned so much already!
Im a frustrated technician....way back 1994 i work as a technician.. now after watching u sir, dont even say what i want to say..im speechless...just wanna say thank you sir...from the philippines...
You should do a video explaining the components and what they do on flight controllers and electronic speed controllers for fpv drones. It's a rising hobby and i love the way you explain things!!
I would like to stay by the side of the LEGEND and absorb directly all this knowledge. Thank you for your time making these videos Mr. Sorin. I would like to have a teacher like you, or work with someone like you.
My name is Solomon I am a Nigerian I repair computer but I want to understand the mother board of the computer. Thank you very much sir for the classes.
I am from egypt Good follower since a year Wating for complete labtop repair course from a to z with pen ,paper and schematics followed by some measurements on real motherboards.. I know it'll take long time but you will be the best
It is the same like in the pc grapics card if you have 4 phases you can run with only 3 only problem is shorter life time of the other 3 phase. I test it on benchmark and it is working normaly but i will put mosfet back because of less stress to other 3 phase. I learn so many things from this channel.
someone with the money should buy thermal camera for this guy as a thank you gift for the service he is giving us for free all those years... from the end of the world|
I simply love what you do,though not understand many things relating this,but watching your vids makes me a bit happy.Sadly I got covid and my health prognosis is not good,but all I wanted before I die is to meet you and you teach me repairing laptops...keep the vids coming master Sorrin.
Sir please make a full video about shorting on circuits on the laptop repair section to explain because a very well experienced person like you teaching methods is different from others really awesome
hello sir, i think that laptop has dual graphics, removing that dual mosfet for graphics power supply disabled the graphic chip (nvidia/radeon) and the laptop automatically switch to intel display , that’s why the laptop has still display you may check it on bios setup or device manager ..as always you are my first laptop motherboard repair teacher,im forever grateful 😍😇🙏🏽☝🏽💻
if i saw well the GPU has 3 phases, removing one mosfet the GPU works in two phases and so also gets feedback from the other two coils, the GPU will work but at full load it will run out of current one phase less current is missing
i think the same. i was under impresion gpu had 4 phases. Sorin simply disconected one phase and laptop will work fine untill gpu ask for more power, then two things will happen, either laptop crashes, or gpu will be limited and throttle back. I had Desktop GPU with burned phase. had to remove both low and hi mosfets, driver and coil. gpu worked fine but showed lower scores on benchmarking.
Sorin, you don’t have to replace the mosfet on modern Multiphase converter it can detect and not use the Missing rail, it will work but it is not ideal for law phase count or high power draw. Buildzoid from Hardcore overclocking channel always does this.
I've seen your first video last year November and I was like wow this guy is demn supper good with fixing laptops, on march this year I came across the video were u were advising on opening a repair shop , and I liked the words u said "just do it" I've managed to buy most of the tools now , I'm still learning from u all the way to Swaziland
well done asus. great design ( as said on the video). i own 3 asus products, my zenfone 6 had faulty mic jack and a scratch on a new screen. i'm happy they took responsibility and repaired everything for no cost.i love the new asus rog zephyrus model with keyboard pulled back.
I have a lot of faith in Asus products. I've just replaced an 11 year old motherboard for the only reason that the water cooling system had a leak and killed it. Rock solid products.
Mr. Sorin, what you take out from the apple board is not a dual mosfet it is a mosfet with shotky diot inside. Dont trow it away it is a quite expensive part 😁
Wow don't think I understood most of what you said I'm still basic but have learned so much from you and in time I will understand this to thank you ☺️
Hello Sorin! Because you removed that dual MOSFET you cancel one of the 4 GPU power phases. So either the super io regognise that and work that GPU with only 3 phases meaning that maybe laptop cannot overclock that GPU or push it to the limits. OR laptop will crash when some heavy application (like games) force that GPU to work under full load and needs all 4 phases.
Am an apprentice but I stopped going to the shop because of your nice lessons and am doing a lot on my own now. Thanks so much sir. One thing I don't understand and I wish to get help in is how you identify and disconnect certain parts of TV boards and it still works. How can I know how to disconnect this parts how do I follow the links to know?
My Zephyrus hasn't turned on again for 7 months now after changing to discrete graphics. Do you think it's has to do with that setting? I took it to 3 techshops to fix and none of them could.
Thank You so much Sorin i've learned a lot from your video its more than a year since ive subscribed to your channel and so far I have improve on laptop repair skill. Thats why im so grateful to come across your chanel been watching all your videos almost everyday, I even save it on my harddrive for my references :) Thanks so much more power to You and Your Channel. God bless.. keep on sharing ... its me Erick from Philippines
Love your videos and thanks for teaching. Often you reach a conclusion without explaining how you worked it out. So when there was no voltage at the charging port how did you know the charging port wasn't the problem and hence to check for motherboard short? How did you know the charger wasn't bad when there was no voltage on the charger?
It looks like the short could have been caused by whatever was on the board and not the component. Maybe the FET is still good. That kind of looks like a splash of solder.
Thank you for this video Sorin. It is very educative, especially because of the example where power management chip via current sensing input resistor did not see short and thus shut down input Mosfets. In this case resistance was high enough not to trigger input Mosfet but internal protection in the charger kicked in.
i think it working fine tough it will act weird as it gets more balasted so it will need an extra power from that line anyway good vid thanks for taking me along 👍😀👍
From stabbing many GPU input inductors in my repair attempts and sanity checks with known-good cards, 0.8Ω is normal for the GPU Vcore resistance. 1.2Ω (older cards) to 0.6Ω is typical, depending on the GPU.
Great Work! I request you to make a video on how we can diagnose the problem in motherboard with the help of voltage fluctuation in multimeter. For instance if there is short on power supply of 3v section how we will come to know on multimeter or for instance if there is short circuit on 5v section then how we can come to know on Multimeter. Thank you
I am an electronics technician with a 2-year associates degree in electronics technology with over 25 years experience in both board and component level. I live in the State Of Maine, U.S.A. If a tech is in business to repair computers in this case to component level, it is always a great idea to have a good stock of components, and Mouser Electronics LLC is an international distributor, and possibly Digikey in Thief River Falls, Minnesota. Use ESD protection such as Faraday Shields, and a grounded bench mat, and a grounded wrist strap, since as little as 12 Volts of static electricity can damage permanently components! Follow my good advice, and you always will get great results!
@Sorin, I know it is 3 months later watching this video, but it was interesting. The MOSFET you are missing is very unusual. Leave it to Fairchild, the company of brainiac engineers who were the foundation of Silicon Valley, and started the semiconductor revolution. Looking at the data sheet, the same time you were looking it up, it is a 10 pin MOSFET. YES 10 pins( before we get into semantics, it is actually 10 contact points). Pin 9 (GND), and The High Side Drain HSD, Pin 10 are on the bottom side of the chip! The HSD is also connected to Pins 3 and 4.
Thanks so much Sorin. I had one HP spectre 430 G5 in my repair shop last month, which the 19V rail 1st Mosfet got short (FDMC 4435BZ) after replacing the P channel FET one V-Core chip was getting hot. The computer now turns up but no display. the chip could not be found online.
Wow I actually had the same high-side MOSFET fault like this one but didn't know for sure, but that's on the 3.3V and the SuperIO is sitting right beside it! By the time I get to test this the SuperIO is already gone (getting mad hot)... And the SuperIO has the BIOS on it so it's a goner... But in my case it's water damage and not whether the quality of the laptop is bad
Make sure you put back the screws in the right places!!! They have 2 different lengths. If you missplace it, a dent appears on the front of the laptop. The owner already did this once, you can see a small bump just below the trackpad. As a second comment, could it be working because the laptop is using the integrated GPU and didn't need the discrete GPU yet? Anyways, nice find of the culprit and a very good diagnosing lesson! Thank you.
Thank you Sorin so much for one more lesson.its amazing.i like the way you present the lesson to all the students in your class. Iam a beginner and iam requesting ,if you can do a video for how to inject amps with power supply to find a sort circuit or faulty component. Thanks.. Greetings from New Guinea.
31:12 time very good ... can you explain better? When you measure the resistance to plus ? And not to minus ? You said that is hight side mosfet shorted .... because that... thanks...
Hi sorin can you tech us how to repair missing IC signal? Example: SIO missing signal Psus#, Rmrst#,EcOn# or missing voltage on Main reg, thank you sorin
@@janaram6118 yes 100% dahil kay sorin na inspired aq mag aral ng board level.. Sana mapansin ni sorin comment q ksi png advance teaching yan, madali lng ang mga short circuit itroubleshoot
@@JazzEnso same tayo gusto ko din matuto nd boardlevel. at tama si master sorin. mas gusto nya din tangap ung fullshorted kesa sa missing sakit sa ulo. more power sa inyo master enso at maser sorin
I fixed my very first motherboard using your lessons, you made me so proud of myself! Thank Sorin for all you do for us!
Living the dream dude! Congrats.
Sorin, above two comments are bots made to scam people. I've tried to report them but you can add filters for your chanel so words like "Flixzone" won't appear.
Did you have to buy any tools? I was trying to fix my laptop but a chip was burned last night due to the broken DC jack. Now I dont know if It is safe to replace the DC jack and to test on the mainboard one more time
@@krystelfreeze4906 try to learn from this channel and do something when you ready. If you just want to fix ones with no tools why these guys don't work with bare hands?
Same for me
I have no idea if I'm actually learning something or not, but it feels like I know more than when I first started watching this a few months ago! Thanks guy
This guy is brilliant! So honest let’s you see what he does. I have a background in electronics, but fixing laptops is very very different from theory. He goes from problem to solution in the most straight line using his immense experience. I’ve learned so much already!
IVE BEEN I REPAIR TECH FOR 27 YRS. IVE LEARNED MORE FROM YOU. THEN I DID IN MY FIRST 3 WEEKS IN SCHOOL. YOUR AWESOME.!!!
Great to see you again Mr.Sorin love from Romania!
Im a frustrated technician....way back 1994 i work as a technician.. now after watching u sir, dont even say what i want to say..im speechless...just wanna say thank you sir...from the philippines...
As a DIY myself, this is one of my go to channel every time I had problem with my home repairs. Good work sir.
So happy that you are back. I am watching your video's for couple weeks and yesterday I repaired my first dead laptop. Thank you so much!
nice to hear from you again mr. sorin
You are a master
I like the way how you share everything without hiding the information instead of selling it
Thank you
One of your student from Nigeria, I'm inspired with all your lesson thank you sir.
You should do a video explaining the components and what they do on flight controllers and electronic speed controllers for fpv drones. It's a rising hobby and i love the way you explain things!!
I would like to stay by the side of the LEGEND and absorb directly all this knowledge. Thank you for your time making these videos Mr. Sorin. I would like to have a teacher like you, or work with someone like you.
1h of skill and good vibes 😎 greetings from Germany
I am glad to see you again Mr. Sorin, greetings from Bulgaria.
You're great.
My name is Solomon I am a Nigerian I repair computer but I want to understand the mother board of the computer.
Thank you very much sir for the classes.
The legend is back again :)
nice to see u again >> miss u BOSS
I am from egypt
Good follower since a year
Wating for complete labtop repair course from a to z with pen ,paper and schematics followed by some measurements on real motherboards..
I know it'll take long time but you will be the best
It is the same like in the pc grapics card if you have 4 phases you can run with only 3 only problem is shorter life time of the other 3 phase. I test it on benchmark and it is working normaly but i will put mosfet back because of less stress to other 3 phase. I learn so many things from this channel.
someone with the money should buy thermal camera for this guy as a thank you gift for the service he is giving us for free all those years...
from the end of the world|
Saw the repair sticker and found this repair shop is literally so close to where I live! That is amazing!
Where is it?
you are really the best teacher
I was watching old videos from you again as am entering the try to fix ground as hobby. Love to see you back
I simply love what you do,though not understand many things relating this,but watching your vids makes me a bit happy.Sadly I got covid and my health prognosis is not good,but all I wanted before I die is to meet you and you teach me repairing laptops...keep the vids coming master Sorrin.
You ain't gonna die please...
That's too negative to say..
Where are you from ? Hope you don't mind chatting me up?
Hey how are you doing, buddy?
u good?
Did you die?
Sir please make a full video about shorting on circuits on the laptop repair section to explain because a very well experienced person like you teaching methods is different from others really awesome
hello sir, i think that laptop has dual graphics, removing that dual mosfet for graphics power supply disabled the graphic chip (nvidia/radeon) and the laptop automatically switch to intel display , that’s why the laptop has still display you may check it on bios setup or device manager ..as always you are my first laptop motherboard repair teacher,im forever grateful 😍😇🙏🏽☝🏽💻
Our teacher and instructor is back, welcome sir,
Thank you and welcome back Mr Sorin, watching from Davao city Phillipines. Stay safe.
if i saw well the GPU has 3 phases, removing one mosfet the GPU works in two phases and so also gets feedback from the other two coils, the GPU will work but at full load it will run out of current one phase less current is missing
I thought the very same thing and was about to ask on discord server and saw your comment.
i think the same.
i was under impresion gpu had 4 phases.
Sorin simply disconected one phase and laptop will work fine untill gpu ask for more power, then two things will happen, either laptop crashes, or gpu will be limited and throttle back.
I had Desktop GPU with burned phase. had to remove both low and hi mosfets, driver and coil. gpu worked fine but showed lower scores on benchmarking.
@@Dmiliunas I'm glad you have the same opinion and knowledge
Greetings from Slovenia
@@neutrinowave it's electronics
You always remove chips and components so quickly and with precision !
you make an hour long video feel like a ten min video great content learned a lot :D
Sorin, you don’t have to replace the mosfet on modern Multiphase converter it can detect and not use the Missing rail, it will work but it is not ideal for law phase count or high power draw. Buildzoid from Hardcore overclocking channel always does this.
I've seen your first video last year November and I was like wow this guy is demn supper good with fixing laptops, on march this year I came across the video were u were advising on opening a repair shop , and I liked the words u said "just do it" I've managed to buy most of the tools now , I'm still learning from u all the way to Swaziland
looking forward to buying some tools as well bro
well done asus. great design ( as said on the video). i own 3 asus products, my zenfone 6 had faulty mic jack and a scratch on a new screen. i'm happy they took responsibility and repaired everything for no cost.i love the new asus rog zephyrus model with keyboard pulled back.
I have a lot of faith in Asus products. I've just replaced an 11 year old motherboard for the only reason that the water cooling system had a leak and killed it. Rock solid products.
This guy has magic in his hands. 👌👌👍
sorin you are a great man and teacher keep it up. thank you from philippines.
Mr. Sorin, what you take out from the apple board is not a dual mosfet it is a mosfet with shotky diot inside. Dont trow it away it is a quite expensive part 😁
We use this low side mosfets always as a diode.. check buck converters
Wow don't think I understood most of what you said I'm still basic but have learned so much from you and in time I will understand this to thank you ☺️
This is going on to my saved videos.
This one was a pretty good lesson Sorin
Thanks Sorin for all you do for us, god bless you, keep you healthy and away from harm
Pure black magic, Sorin removes a component the laptop works, it knows its master. G
Hello Sorin! Because you removed that dual MOSFET you cancel one of the 4 GPU power phases. So either the super io regognise that and work that GPU with only 3 phases meaning that maybe laptop cannot overclock that GPU or push it to the limits. OR laptop will crash when some heavy application (like games) force that GPU to work under full load and needs all 4 phases.
Usually I use 3.3v as a voltage for current injection ( if the cap burns.. no way to fry something with a 19v voltage )
Greetings from Poland 🇵🇱🙂
Excellent, second video i watch from your channel, u will have a subscriber from Colombia living in Bolivia Country, thanks!
unbelieveble patiance and dedication. Good job
Your a generous man and a great teacher, thank you
Am an apprentice but I stopped going to the shop because of your nice lessons and am doing a lot on my own now. Thanks so much sir.
One thing I don't understand and I wish to get help in is how you identify and disconnect certain parts of TV boards and it still works. How can I know how to disconnect this parts how do I follow the links to know?
Thanks so much mr Sorin
Always a pleasure watching your brain at work
Good video!But i think here is a switching graphics and now the discrete is not working ,only that in cpu.
My Zephyrus hasn't turned on again for 7 months now after changing to discrete graphics. Do you think it's has to do with that setting? I took it to 3 techshops to fix and none of them could.
You sure it is automaticaly can turn discrete to UMA ? I know the only way to change it with hand operation, changin some parts
Thank You so much Sorin i've learned a lot from your video its more than a year since ive subscribed to your channel and so far I have improve on laptop repair skill. Thats why im so grateful to come across your chanel been watching all your videos almost everyday, I even save it on my harddrive for my references :) Thanks so much more power to You and Your Channel. God bless.. keep on sharing ... its me Erick from Philippines
I didnt notice i spent an hour on this video lol. Very informative
Good to see you back Sorin!
Nice repairing chanel and you're my best youtuber 👍
Nice to see you again Engr ....we hope you are okay.
Great job and thx a lot, very calm and relaxing explanation on many things..love from Bosnia and Herzegowina
Best wishes from Bulgaria!
Thanks for posting despite the curveball at the end there haha. It was interesting and informative, regardless. Good seeing ya again.
Love your videos and thanks for teaching. Often you reach a conclusion without explaining how you worked it out. So when there was no voltage at the charging port how did you know the charging port wasn't the problem and hence to check for motherboard short? How did you know the charger wasn't bad when there was no voltage on the charger?
Thank you for being a good teacher!🙏😘
I always learn something new everytime I listen to you. Thanks
Element14 have plenty in stock in the UK
It looks like the short could have been caused by whatever was on the board and not the component. Maybe the FET is still good. That kind of looks like a splash of solder.
Thank you for this video Sorin. It is very educative, especially because of the example where power management chip via current sensing input resistor did not see short and thus shut down input Mosfets. In this case resistance was high enough not to trigger input Mosfet but internal protection in the charger kicked in.
i think it working fine tough it will act weird as it gets more balasted so it will need an extra power from that line anyway good vid thanks for taking me along 👍😀👍
Yeah, thats is what I recon is gonna happen.
Hi from Greece ! Thanks for videos!
From stabbing many GPU input inductors in my repair attempts and sanity checks with known-good cards, 0.8Ω is normal for the GPU Vcore resistance. 1.2Ω (older cards) to 0.6Ω is typical, depending on the GPU.
Great Work! I request you to make a video on how we can diagnose the problem in motherboard with the help of voltage fluctuation in multimeter. For instance if there is short on power supply of 3v section how we will come to know on multimeter or for instance if there is short circuit on 5v section then how we can come to know on Multimeter. Thank you
I am an electronics technician with a 2-year associates degree in electronics technology with over 25 years experience in both board and component level. I live in the State Of Maine, U.S.A. If a tech is in business to repair computers in this case to component level, it is always a great idea to have a good stock of components, and Mouser Electronics LLC is an international distributor, and possibly Digikey in Thief River Falls, Minnesota. Use ESD protection such as Faraday Shields, and a grounded bench mat, and a grounded wrist strap, since as little as 12 Volts of static electricity can damage permanently components! Follow my good advice, and you always will get great results!
@Sorin, I know it is 3 months later watching this video, but it was interesting. The MOSFET you are missing is very unusual. Leave it to Fairchild, the company of brainiac engineers who were the foundation of Silicon Valley, and started the semiconductor revolution. Looking at the data sheet, the same time you were looking it up, it is a 10 pin MOSFET. YES 10 pins( before we get into semantics, it is actually 10 contact points). Pin 9 (GND), and The High Side Drain HSD, Pin 10 are on the bottom side of the chip! The HSD is also connected to Pins 3 and 4.
Thanks so much Sorin.
I had one HP spectre 430 G5 in my repair shop last month, which the 19V rail 1st Mosfet got short (FDMC 4435BZ) after replacing the P channel FET one V-Core chip was getting hot. The computer now turns up but no display. the chip could not be found online.
It is nice how you explain things and troubleshooting!
When i see Sorin's video first i like then i watch...
Very nice and informative .. your videos are very much educational for us ... Thanks for educating us.. God bless you
Fantastic channel, learn a lot. When are you starting the new channel about photography?
You're a great person Mr. Sorin I learned a lot to you. Thanks a lot. Godbless you always.
This is a very important lesson Mr Sorin thank you
Hy Sorin! it would be great if the "shop workflow" series continued.
The great Sorin is back!
Why don't you buy the chip from mouser, farnell o digikey?
Maybe feedback is for balancing load on all mosfets. If one is missing power management chip rises load on other mosfets
always cool mr.sorin , when you host your show ..love it
27:52 Sits back, says "this is a nice laptop", and smoke a Bob... I like this guy
Greetings from Poland👍
Wow I actually had the same high-side MOSFET fault like this one but didn't know for sure, but that's on the 3.3V and the SuperIO is sitting right beside it! By the time I get to test this the SuperIO is already gone (getting mad hot)... And the SuperIO has the BIOS on it so it's a goner... But in my case it's water damage and not whether the quality of the laptop is bad
Make sure you put back the screws in the right places!!! They have 2 different lengths. If you missplace it, a dent appears on the front of the laptop. The owner already did this once, you can see a small bump just below the trackpad. As a second comment, could it be working because the laptop is using the integrated GPU and didn't need the discrete GPU yet? Anyways, nice find of the culprit and a very good diagnosing lesson! Thank you.
Thank you Sorin so much for one more lesson.its amazing.i like the way you present the lesson to all the students in your class.
Iam a beginner and iam requesting ,if you can do a video for how to inject amps with power supply to find a sort circuit or faulty component.
Thanks..
Greetings from New Guinea.
Really Hard video to do, and what a massive result in the end!
The controller knows when the mosfet is bad or missing and can work without the mosfet with extra load on others
From Kenya,great video
The best electronic teacher
31:12 time very good ... can you explain better? When you measure the resistance to plus ? And not to minus ? You said that is hight side mosfet shorted .... because that... thanks...
@glyn hodges thanks
Hi sorin can you tech us how to repair missing IC signal? Example: SIO missing signal Psus#, Rmrst#,EcOn# or missing voltage on Main reg, thank you sorin
master fan k din pala ni master sorin hehe
@@janaram6118 yes 100% dahil kay sorin na inspired aq mag aral ng board level.. Sana mapansin ni sorin comment q ksi png advance teaching yan, madali lng ang mga short circuit itroubleshoot
@@JazzEnso same tayo gusto ko din matuto nd boardlevel. at tama si master sorin. mas gusto nya din tangap ung fullshorted kesa sa missing sakit sa ulo. more power sa inyo master enso at maser sorin
Best repair Chanel good luck master
welcome back Sorin , again great vid like alway`s
Hello hello master! Good. To see you again.
What is the name of the multimeter ? I love that display !
Great to see you back , Question where do you obtain all your scrap mother boards that you use for spare parts from?
when the market becomes big some customer will sell some finished boards