Hi. I have been following your channel for quite some time now from my point of view you one of the most Genuine Teachers of electronics I have ever come across online. Being in the computer repair business for about 10-15years my version of the repair was finding what part went bad and then replacing that part which is very basic since watching and studying your videos I have a better working knowledge of diagnosing and troubleshooting. I know I still have a lot to learn but you make learning easy and fun. I want to say thank you for taking the time out to make such educational videos on electronics repair. you have been an inspiration to many of us Please keep up the good work.
interesting points ,if anyone else wants to learn about pcb trace repair try Saankramer Electronic Magazine System (just google it ) ? Ive heard some extraordinary things about it and my brother in law got great results with it.
One of the best teachers, I'm following you for 1 year, and in every lesson you give me something that in the past years other teachers can't able to explain as you. Please never stop to do your lessons, Greetings from Italy my master Antonio Micello
Don't try bridging MOSFETS. Good advice. Back in the 70's I use to tuneup my cars replacing plugs, points and condensers. Then they started putting in fuel injectors and computer circuits. Now I take my truck to people who know what they are doing. Their experience is just as valuable to me as the parts they use. I enjoy your videos. They help me appreciate a hidden world of electronics all around me
If he did not bridge the MOSFET then the other option was to throw away the dead Laptop but by bridging the MOSFET the laptop turns on and might works for years until there is power surge to damage other components!!!
Wow for a biginner like I'am this is just awesome! Most videos on youtube are just for advanced technitian, they're only speaking for themselves. I think the most important point here was how to follow the track, that's the key. Thank you!
I am a beginner and have already learned so much from you. I would like to thank you for your videos and the time that goes into making them. Thank you for sharing your knowledge with us.
Good Video.. I like the *"Beginner Point of View"* idea... Alot of us are just starting out... You should do more like these... i know this is an older vid, but the idea is good & different than everything else on uTube.. You should do fault finding videos like that too... maybe even common components & how to test them with meter in-circuit to know if they are bad, *HOW* to test them.. Thanks keep up the good work Soron...
It is nice to see something simple. I am on my third laptop to learn this and it looks like I won't find the fault...Things do go very complicated indeed and situations where you just give up pop up all the time. For a noob it may be simple when one looks at your videos but in reality it is very overwhelming. Well at least for me. Thanks Sorin for your work.
There are never enough videos for those just starting to repair laptops, but this video I found excellent increasingly sorin becomes an excellent educator to find some of the easiest problems to repair and find. Thank you, excellent.
Yo this video was perfect in every way and helped me answer and break so many barriers where my questions lay. I appreciate this video very much. I would love to see you do this again.
Thank you, makes me want to learn electronic basics, then being a better and more complete computer technician. It's so satisfying to be able to repair electronic boards instead of throwing them away.. Keep up the good work!!
Thank you Sorin I am learning but I appreciate the time you take to teach rather than money it means a lot to me and I think many others keep up the good work
You are a great teacher...you keep it simple. I would have liked it if you had shown where you bridged the MOSFET as a beginner just to be sure thanks.
I've been given some faulty laptops, I know two have power issues. This is the first video I've seen that actually helps me understand the basics of laptop power distribution instead of just rattling off acronyms from a schematic.
At first I made the decision to watch your long video (1+ Hr) and it was interesting !!! But today I found, you are really awesome. Ultimately/finally I had to subscribe to avail your superb knowledge. Great work and research dear !!! KEEP IT UP. Best wishes from LAHORE
Oh hello ser good day because here from i’m from is already sunny day! And how i love watching you tweek so easy and effortless almost all loptop that comes in your shop, its very informative the way you present every situation i’m si very grateful to have come and watch your every video thank you very much My name is leonardo and i’m from the phlippines
But what if the laptop is opening the input MOSFET for protection because there is a short in a CPU MOSFET and you bridge the input? You would put 19V in the CPU?
I bought a 3$ dead laptop for learning, I followed your trick and now I am getting 3 volt on the power button. It seem to work now I need to buy a proper charger. Testing it with a 12volt adapter lol. Looks like this one cannot power the laptop on.
Perfect, working on the exact same laptop, magnification was a big help. 👍 Edit: Put it back together and found the plastic on the charger tip stripped from wear and tear, positive was shorting in the port.
thank you sir for your videos i have really learnt a lot . your laptop repair tutorial is one of the best out there, obviously you are a genius. please i want to ask a bit confusing question 1. when do we accuse the supper io for a laptop failure? 2. why will a laptop refuse to power on when 19v, 3.3v, 1.0v, 0.9v, .. are all present on a laptop mother board. 3. what do we do when there is no voltage on the cpu power supply when the system is powered on.
Excellent video 8-) Myself an Acer Laptop that doesn't light the screen, I was informed that the video 'chip' was gone! Now I can hopefully check the power jack/port side of the mobo. I have an eye glass (30x) but even that might be no good in this situation. At least I will be aware of that now thanks.
Thanks for another interesting video Sorin. I hope you can make another one with a faulty capacitor and how a beginner can approach that too. I'm facing a similar issue with a "dead" Lenovo laptop and via your videos I am beginning to get confident that I will be able to revive it. Regards!
Hi there, I really like your channel, I have learned a lot from you. Thank you so much for this channel you are an expert in electronics and I appreciate your sharing your knowledge with us. Greetings from Bosnia and Herzegovina
I love your practical approach to electronics it just seems to flow with you, Great teacher, Please keep making more video's I would like to learn more in your class. best regards joe uk
What he did here is equivalent to resetting your circuit breakers when the lights go out in your home. Think of the first two Mosfets as circuit breakers that will shut down power when something is drawing too much current. On an N-Channel Mosfet the Gate must be the same or higher than the source for current to go through. On this Mosfet the Gate was 0.924v while the Source was 19.22v. In order for current to go through he jump the Mosfet to make the Gate equal to the Source thereby allowing the current through. But what about the component that cause the surge in the first place? It's still there and may lead to more problems down the road. Is this a good fix? Would you call using a penny in place of a fuse to get the lights back on in your home a good fix?
Hi sorin i have an important question,i believe the charging ic (bql for exemple) is the one who supply the gates of the mosfet , so if the gates are 0 volts then i suppose the charging ic is faulty ,and even if u jump mosfet ,the laptop will turn on but it won't charge the battery because the ic is faulty ,can u explain that please ?
Hi Sorin. Sorry for the question but i want to ask, at the end ofthe video you shorted a mosfet and a laptop is working, my question is you shorted from drain to gate or you shorted drain to source? Or it is just does not matter what i short togerher? Its like the same?
@Rudko1337 First from drain to source; this will short the MOSFET so the 'switch' will be closed. After that he connected the drain (the 19v input) with the gate so the MOSFET was activated and the 'switch' was closed.
I can't help but have serious reservations about bridging that MOSFET. Is this your board or a customer? If it is a customer it brings up some other questions. Do they expect you to repair it or just make it work long enough to copy data? Did you talk to them about what you are doing. It just seems a bit shady to bypass a component instead of fixing the problem. When I started watch this video, the title gave me the impression that you would repair it, not jury rig it. This is what my dad used to call half-assing it.
Assuming the manufacturer desing is better than my one, thats a different ball game, we are not doing something like that here! You must be new here :D
Great video Sorin, thanks for all your videos.. One day can you make video showing how to fix the other way? like checking why Chaging IC is not opening first mosfet.
just thanks man thanks i spent my free time watching you with a pleasure .keep this work this is the reason why you are so great,because you have altrouism as person
Hi, I am so impressed with your video on how to diagnose to find out a shorted circuit. I have DEAD Thinkpad L380 after changing with a new battery. I removed the newly installed battery and plugged power cord LED on switch blinked a second and went off. When I pressed power button nothing happed and system didn't start. I am afraid i have a shorted circuit on motherboard which caused dead machine. I am a biginner and no knowledge about electrical aspect and stuck with dead laptop. I would greatly appreciate if you teach me on step-by-step dignose tech.
Please please please make more videos like this, I learnt so much, or if you have more videos like this then create a playlist for beginner videos, thank you very much
Lord you are not a normal person, you have a gift for teaching, for choosing words and stooping yourself to beginners like me whom you help in a great way, for all that thank you, may all blessings fall on you and your family. Greetings from Argentina
thank you very much, can you also explain the other power supplies which is on the laptop (switching power supplie, 3.3v, 5v) how they are distributed and how to cheek them.
You deserve my respect sir. Thank you for sharing. Liked and subscribed. Hope you will never stop on making a video tutorials on electronic repairs. Hat off.
Very good video! 👏🏼 One single thing the keyboard had clips in the upper part - the corect way of removing 😬 and also i am not a big fan of metal tools. of course this was not big of a laptop but in an expensive laptop even a slight scratch matters for the client. (Begineers tip)
Este o surubelnita electrica pe ebay, ca un pix micuta rau , cred ca te ar ajuta mult. Am reparat primul laptop cu ajutorul tau ( incalzirea cipului video amd) nu mi a venit sa cred, te urmaresc cu interes si multumesc pentru laptop. Sper ca nu te a deranjat limba Romana 😁
Hi. I have been following your channel for quite some time now from my point of view you one of the most Genuine Teachers of electronics I have ever come across online. Being in the computer repair business for about 10-15years my version of the repair was finding what part went bad and then replacing that part which is very basic since watching and studying your videos I have a better working knowledge of diagnosing and troubleshooting. I know I still have a lot to learn but you make learning easy and fun.
I want to say thank you for taking the time out to make such educational videos on electronics repair. you have been an inspiration to many of us Please keep up the good work.
so am I...
Thank you
@@electronicsrepairschool hello, my laptop (acer aspire) dead while charging ..what may be the problem?
interesting points ,if anyone else wants to learn about
pcb trace repair
try Saankramer Electronic Magazine System (just google it ) ? Ive heard some extraordinary things about it and my brother in law got great results with it.
I second that.. Really great work.
Thank you Mr ,Sorin please do more videos on beginners like the 3.3 and 5v power rail
One of the best teachers, I'm following you for 1 year, and in every lesson you give me something that in the past years other teachers can't able to explain as you. Please never stop to do your lessons, Greetings from Italy my master
Antonio Micello
Don't try bridging MOSFETS. Good advice. Back in the 70's I use to tuneup my cars replacing plugs, points and condensers. Then they started putting in fuel injectors and computer circuits. Now I take my truck to people who know what they are doing. Their experience is just as valuable to me as the parts they use. I enjoy your videos. They help me appreciate a hidden world of electronics all around me
If he did not bridge the MOSFET then the other option was to throw away the dead Laptop but by bridging the MOSFET the laptop turns on and might works for years until there is power surge to damage other components!!!
@@keram4u He could always get another MOSFET. Either from a donor board or new.
Wow for a biginner like I'am this is just awesome! Most videos on youtube are just for advanced technitian, they're only speaking for themselves. I think the most important point here was how to follow the track, that's the key. Thank you!
I am a beginner and have already learned so much from you. I would like to thank you for your videos and the time that goes into making them. Thank you for sharing your knowledge with us.
Good Video.. I like the *"Beginner Point of View"* idea... Alot of us are just starting out... You should do more like these... i know this is an older vid, but the idea is good & different than everything else on uTube.. You should do fault finding videos like that too... maybe even common components & how to test them with meter in-circuit to know if they are bad, *HOW* to test them.. Thanks keep up the good work Soron...
It is nice to see something simple. I am on my third laptop to learn this and it looks like I won't find the fault...Things do go very complicated indeed and situations where you just give up pop up all the time. For a noob it may be simple when one looks at your videos but in reality it is very overwhelming. Well at least for me. Thanks Sorin for your work.
Wow, you're like a russian louis rossmann that is not obsessed with mac.
That's why I subscribe.
pretty sure sorin is a romanian name
mac are providing lot of money, may be that explains this ...
Lol
Hahahah, nice put. This man is priceless.
@@IsaacOLEG absolutely, less work for more money, why bothering repairing Hp laptops that have no schematics ?
There are never enough videos for those just starting to repair laptops, but this video I found excellent increasingly sorin becomes an excellent educator to find some of the easiest problems to repair and find. Thank you, excellent.
I don't even know the words to describe u, Mr. Sorin u are my mentor when it comes to electronics field
My brother.... Remembering old days...a very refreshing video... Like after your vacation....
I am from Sri Lanka.what a nice teacher . I respect u. Pls be more simple when u teach as we are poor in knowledge
Good morning Mr.Sorin, thanks for coming back to bignners tutorials.
Because is always good to Lean from the ELECTRONICS DICTIONARY.👍
Sir may you leave long, you have real impact a lot of things in me, am proud of your channel 🍾
i loved it. more training for beginners. to be honest i never understand how you follow the tracks, today i learned first step....
Yo this video was perfect in every way and helped me answer and break so many barriers where my questions lay. I appreciate this video very much. I would love to see you do this again.
Thank you Sorink for teaching as.This is the best school and you are the best teacher.
Thank you, makes me want to learn electronic basics, then being a better and more complete computer technician. It's so satisfying to be able to repair electronic boards instead of throwing them away..
Keep up the good work!!
Thank you again for the videos. I am no longer scared to try to fix my old laptop.
Thank you Sorin I am learning but I appreciate the time you take to teach rather than money it means a lot to me and I think many others keep up the good work
You are a great teacher...you keep it simple. I would have liked it if you had shown where you bridged the MOSFET as a beginner just to be sure thanks.
I just have to say your passion for the craft is one of the things inspiring me to go into PC repair
I've been given some faulty laptops, I know two have power issues. This is the first video I've seen that actually helps me understand the basics of laptop power distribution instead of just rattling off acronyms from a schematic.
At first I made the decision to watch your long video (1+ Hr) and it was interesting !!! But today I found, you are really awesome. Ultimately/finally I had to subscribe to avail your superb knowledge. Great work and research dear !!! KEEP IT UP. Best wishes from LAHORE
I really enjoy your videos, i am currently troubleshooting a toshiba laptop with bios loop and no fan spinning and one with no video.
It was really nice to hear the thinking. This helps with understanding the start of the troubleshooting process. Thanks very much.
very good teacher. your explanation is very clear. thank you so much sir.
Sorin is brilliant man. You're a good teacher I Wish you always be healthy and good prosperity.
Did you replace the mosfet later or returned the laptop with the wire bridge to the customer ?
Sir, you are superb! My master always do this but I don't understand why he normally bridge that place. Today you made it clear to me. Thank you alot.
Oh hello ser good day because here from i’m from is already sunny day!
And how i love watching you tweek so easy and effortless almost all loptop that comes in your shop, its very informative the way you present every situation i’m si very grateful to have come and watch your every video thank you very much
My name is leonardo and i’m from the phlippines
But what if the laptop is opening the input MOSFET for protection because there is a short in a CPU MOSFET and you bridge the input? You would put 19V in the CPU?
Thank you so much. I feel like a light has come on inside my head. I really appreciate your videos
I bought a 3$ dead laptop for learning, I followed your trick and now I am getting 3 volt on the power button. It seem to work now I need to buy a proper charger. Testing it with a 12volt adapter lol. Looks like this one cannot power the laptop on.
Mi.a plăcut acest video . Multumesc profesore
Man thank you so much .I have learned a lot from you .Keep the good work 👍
Perfect, working on the exact same laptop, magnification was a big help. 👍
Edit: Put it back together and found the plastic on the charger tip stripped from wear and tear, positive was shorting in the port.
thank you sir for your videos i have really learnt a lot .
your laptop repair tutorial is one of the best out there,
obviously you are a genius.
please i want to ask a bit confusing question
1. when do we accuse the supper io for a laptop failure?
2. why will a laptop refuse to power on when 19v, 3.3v, 1.0v, 0.9v, .. are all present on a laptop mother board.
3. what do we do when there is no voltage on the cpu power supply when the system is powered on.
You bridge that mosfet because you can Master. I love it. Amazing school, amazing atmosphere. Thank You. Regards
Thank you SORIN nice beginner point o view.
as always a great job.
fast and simple short the first Mosfet and 19v is back
The Way you explain the things is Perfect!Thank you very much!!
Excellent video Sorin. I learnt a lot from this one. I have a notebook and pen at the ready to jot down any points I think I need to remember. Bravo!
Great trouble shooting technique. I am now equipped to attempt diagnosing my no power on/no charge problem.
Excellent video 8-) Myself an Acer Laptop that doesn't light the screen, I was informed that the video 'chip' was gone! Now I can hopefully check the power jack/port side of the mobo. I have an eye glass (30x) but even that might be no good in this situation. At least I will be aware of that now thanks.
in my world everything starts at the "beginning level" Thank you
Thanks for another interesting video Sorin. I hope you can make another one with a faulty capacitor and how a beginner can approach that too. I'm facing a similar issue with a "dead" Lenovo laptop and via your videos I am beginning to get confident that I will be able to revive it. Regards!
Hi there, I really like your channel, I have learned a lot from you. Thank you so much for this channel you are an expert in electronics and I appreciate your sharing your knowledge with us. Greetings from Bosnia and Herzegovina
Thanks you sir your instractions saved my Lenovo G5-30, in my case the second mosfet was dameged
Sir may God bless you the way you are teaching you have inspired to do what you are doing just as a begginer GOD BLESS YOU A THOUSAND WAYS
Sir you are a good teacher
I am also beginner and learn lots of things.
I love your practical approach to electronics it just seems to flow with you, Great teacher, Please keep making more video's I would like to learn more in your class. best regards joe uk
Best tecnical repair on UA-cam.
King of the quick-and-dirty repair!
What he did here is equivalent to resetting your circuit breakers when the lights go out in your home. Think of the first two Mosfets as circuit breakers that will shut down power when something is drawing too much current. On an N-Channel Mosfet the Gate must be the same or higher than the source for current to go through. On this Mosfet the Gate was 0.924v while the Source was 19.22v. In order for current to go through he jump the Mosfet to make the Gate equal to the Source thereby allowing the current through.
But what about the component that cause the surge in the first place?
It's still there and may lead to more problems down the road.
Is this a good fix?
Would you call using a penny in place of a fuse to get the lights back on in your home a good fix?
But what would be a better solution?
@@CTsparkle - A better solution would be to find the faulty component and replace it.
Thanks for the explaination. I could follow the voltage reading but I didn't understand why he would solder that MOSFET
Hi sorin i have an important question,i believe the charging ic (bql for exemple) is the one who supply the gates of the mosfet , so if the gates are 0 volts then i suppose the charging ic is faulty ,and even if u jump mosfet ,the laptop will turn on but it won't charge the battery because the ic is faulty ,can u explain that please ?
Amazing video. Probably one of the best in the channel. Gj Sorin.
i love to not skipped any ads from this channel... 😊
Hi Sorin. Sorry for the question but i want to ask, at the end ofthe video you shorted a mosfet and a laptop is working, my question is you shorted from drain to gate or you shorted drain to source? Or it is just does not matter what i short togerher? Its like the same?
@Rudko1337 First from drain to source; this will short the MOSFET so the 'switch' will be closed. After that he connected the drain (the 19v input) with the gate so the MOSFET was activated and the 'switch' was closed.
I just want to thank you, I could fix my laptop following your tips. THANK YOU!!
Please keep up the good work. WE NEED YOU . . . THANK YOU SO MUCH.
where is the advertisement..do i mis it .....nice and very fruitful tutorial from beginer view..Post more pls like this.....
I can't help but have serious reservations about bridging that MOSFET. Is this your board or a customer? If it is a customer it brings up some other questions. Do they expect you to repair it or just make it work long enough to copy data? Did you talk to them about what you are doing. It just seems a bit shady to bypass a component instead of fixing the problem. When I started watch this video, the title gave me the impression that you would repair it, not jury rig it. This is what my dad used to call half-assing it.
Assuming the manufacturer desing is better than my one, thats a different ball game, we are not doing something like that here! You must be new here :D
Thank you sir I'm try to get these 3 dells going I'm watching and learning success to all
Great video Sorin, thanks for all your videos.. One day can you make video showing how to fix the other way? like checking why Chaging IC is not opening first mosfet.
Very practical guide in solving problem. Very clear.
Thank you sorren... i wish i could be like you... i am falling inlove with electronics i am buying some tools so that i can apply your teaching
just thanks man thanks i spent my free time watching you with a pleasure .keep this work this is the reason why you are so great,because you have altrouism as person
Your techniques so awesome and real. Thumbs up from nigeria. One of the best videos on repair over the youtube. Easy$fun...
Thank you Sorin it is the best beginners class
Hi sorin thankyou for your useful tutorial video, please explain more about power rail and power supply on laptop please. Thnx
Good morning Mr. Sorin and thank you for these amazing videos, and for showing us different approaches .
AS ALWAYS GOOD JOB. YOU EARN MY RESPECT.
And who are you?
An informative video showing a beginner like me the process. You earned my sub!
Era interesant dacă laptopul ar fi pornit fără acel ștrap în cazul în care ați fi chimbați bateria de bios. Felicitări pentru explicații!
Your certainly a very knowledgeable person ,enjoy ur videos's .Many thanks to you. Cheers
Excellent beginners guide!
thank you Sorine,good teaching,You are my teacher.
Hi, I am so impressed with your video on how to diagnose to find out a shorted circuit. I have DEAD Thinkpad L380 after changing with a new battery. I removed the newly installed battery and plugged power cord LED on switch blinked a second and went off. When I pressed power button nothing happed and system didn't start. I am afraid i have a shorted circuit on motherboard which caused dead machine. I am a biginner and no knowledge about electrical aspect and stuck with dead laptop. I would greatly appreciate if you teach me on step-by-step dignose tech.
love this, i am gaining lots of experience watching your video :)
Incredible insight sir, im amazed at what you do and how i have really technically advanced in my trainging
Please please please make more videos like this, I learnt so much, or if you have more videos like this then create a playlist for beginner videos, thank you very much
You are amazing we learn lot from . Please make video when bios is bad and need to re program . Forget those giving u negative comments
Lord you are not a normal person, you have a gift for teaching, for choosing words and stooping yourself to beginners like me whom you help in a great way, for all that thank you, may all blessings fall on you and your family. Greetings from Argentina
Nice video, I learned a lot. You have to make more videos like that, from a beginner's point of view. Maybe like a list of videos like that.
Thank you for your effort, i really enjoyed your video ❤ my question IS how did bridge the mosfet ?
Love your videos sir, just subscribed and looking at more
What a great teacher.... THANK YOU!!!!!
This has been a GREAT LESSON. Thank you very much.
What a legend. Thanks for the tutorial.
Thank you Sorin for a nice informative video
Ty all time very good explanation and really simple to learn.. Need more peoples like you.. Thx
I would love to see how to measure and diagnose it "properly" - it would be very educational
Same here!
And very profitable must of all.
Thank you sir i learn to fix my board thru transformer 18v. Now its working
That is a proper calibrated fuse/wire. A very important component in fixing laptops. But, as Sorin mentioned, be very careful where you use them...😇
thank you very much, can you also explain the other power supplies which is on the laptop (switching power supplie, 3.3v, 5v) how they are distributed and how to cheek them.
You deserve my respect sir. Thank you for sharing. Liked and subscribed. Hope you will never stop on making a video tutorials on electronic repairs. Hat off.
Very good video! 👏🏼 One single thing the keyboard had clips in the upper part - the corect way of removing 😬 and also i am not a big fan of metal tools. of course this was not big of a laptop but in an expensive laptop even a slight scratch matters for the client. (Begineers tip)
Ooooh this one is a good video. Now i know how to make a start.
Este o surubelnita electrica pe ebay, ca un pix micuta rau , cred ca te ar ajuta mult. Am reparat primul laptop cu ajutorul tau ( incalzirea cipului video amd) nu mi a venit sa cred, te urmaresc cu interes si multumesc pentru laptop. Sper ca nu te a deranjat limba Romana 😁
Will try to troubleshoot my laptop this week.
Hopefully its as easy as what you did...