5:12 warning for others: please do not inject 19v on the main power rail for fun, when normally that voltage is missing. You can be lucky, or you can inject 19V straight to cpu/gpu/chipset IF any of the mosfets or PWM controllers are partial damaged or not working properly. Always there is a reason when the motherboard cut down the main high voltage. Sorin started... with correct voltage - he injected 0.9V on the beginning to the main rail, and he discovered that there is no short, so he assumed that it is safe now to inject 19V. I agree with him, but he didn't told you about the warning, that if you want to inject 19V, you have to start from 0.9 in the first place, which is typical cpu/gpu voltage.
Only thing I disagree is u commented str8 to the viewers instead of directing it to the maker of th3 tutorial Makin ourself seem smarter than the man himself, btch move
Amazing! If he hadn't taken time to explain, it'd take him 2 minutes start to finish. Have to say, Sorin you have a gift: Teaching difficult to grasp topics in a manner others can fully comprehend. Very few and also the very best university professors share this quality. (Most practice linguistic ambiguity. ) College kids: Sorin is an excellent standard to hold professors to. Before "add/drop week," professors who haven't made you understand concepts well the first week, a) can't & b) don't improve and c) waste your semester.) I feel blessed to be able to learn from you Sorin.
I work in IT but I'm a total noob in electronics. I just like watching your repairs cause it feels like magic to me. Also, you have a very enjoyable personality and explain what you do well. I think in this day and time, you're doing god's work by not only repairing stuff, but also showing everyone how to do the same. Kudos and much respect to you sir.
after i watched more than 100 your videos, finally i took a step to repair my own Laptop, and finally lucky me, found a shorted capacitor.. thank you very much for all lessons you gave to us Sorin, Salute From 🇲🇨INDONESIA🇲🇨
Hello Sorin! I subscribed to your channel and I love every video you produce. All I wanted to say in this message is that I respect your work, humor and ingenious solutions for customers with "dead" laptops. I just wanted to say hello and thank you for the great videos! I really like each one! I'm a retired IBM technician at the former IBM Endicott facility, New York, USA (1974-2002) I'm almost 75 years old, and I don't repair hardware or software repairs any longer. Thank you very much! 😊 Rick White
Halo Mr Sorin. A very warm thank you from South Africa. I just fixe a Toshiba Satellite c850 with you help. Its probably same model laptop as this video of yours. And the same solution too. Thank you sir for giving me courage. I will post my successful repair on TH-cam very soon. One more time Sorin thank you very much to share your knowledge to us.
I buddy that runs a computer repair shop had a bunch of laptops (40 plus) ranging from windows xp to10 that he just had sitting around because the recycling place he used to take them to shut down and he can't legally just dump them so he offered them to me since I like tinkering. I've never done motherboard repair so this going to be a fun skill to learn. First time seeing this channel and just subcribed.
I love ur passion in repairing electronics. It doesn’t matter wether the device is too old just focus on objective in finding out the problem. Keep it up Sir 🫡
Nice. Along with other diagnosis and repair videos it shows how nice and simple things can be. I just need 1) the tools to deal with SMDs, 2) the eyesight to see that small properly, 3) the time to devote to dismantling, fixing and rebuilding, 4) the space to store all the tiny screws so that I can find them again when I can't meet the criteria for point 3), and 5) the courage to do it.
Spring, do you actually teach people this from scratch? Often there is too much background info on how these things work, some people only want to know a path to walk from power going in at each point so that they can actually see no power at certain points. There are too many people that go through the science, ohms law, calculations etc and some people can’t take it in that way. The easiest way is to see a simple on off type of explanation to a circuit. That’s what you done in this video and I really enjoyed it. Simplified and no long winded explanation. Keep them coming!
always thanks Sorin for you video. this time I have a question. How you do find the 2nd Mosfet fault not charging IC. there is not gate signal and source voltage. you didn't even mention about the gate signal from charging IC. I thought becuase of no signal to gate. anyone can explain to me?
Although I have not the faintest idea about electrics I love watching your work. Hope you can explain sometimes a little bit for us non-schooled watchers.
I fix one loptop yesterday i follow the what sorin said.. And 3 more in this day.. Thank you for this man.. legend aim from Philippines.. Cellphone laptop technician. 😇😇😇😇😇
He lastly told the reason and true story. Good, many people wouldn't tell this. I am totally not a computer repairing guy, just an electronic engineer. Lately, l need to repair my failed old laptops. Luckily, l can find those motherboard schematics on the web. By tracing the problem, a failed mosfet on power rail area found, it was caused by a failed capacitor that shorting power rail to ground. Today, I see this video
I own an HP9840WS this was the old Compaq with the same number, just before HP bought Compaq. At the time it was the flagship of Compaq. The problem history of this laptop is intersting. I noticed it got very hot (above 100C on the cpu area) and then it dit shutdown by itself. This happened about 10 seconds after the laptop was started. So i replaced the fan and pipe vents. Nothing changed. I replaced battery, same result. And finally i replaced the whole motherboard, and gues what? The problem is still there! I can figure out the second mother board i bought was very likely suffering the same problem. In one case like this , what part of the laptop you would start to look at?
I have a power suply issue on a most modert circuit. It has been dificult just to ID the components because I dont have the diagram. Do you have a video for this Chinese made electronics that apparently are made for NO service devices or "NOT Serviceable" therefore a buy-use-break-throwaway device but since they are quite expensive Im thinking they should be serviceable. At any rate, I am dealing with a car stereo head unit based on Android with a 7 inch LCD screen and Android Auto to control sound, GPS, Cameras, FM/AM Radio. The electronics on the main board are much smaller than the ones found on laptops but not necessarily impossible to work with, I am just missing the right tools. The way this unit broke was that it received +12v on the external amplifier remote control or remote start signal cable. This cable already has 12v coming from the head unit so I am not sure what it did. There are two hypothesis, that was the first, the second was that it did received a -12 vots from the secondary battery installed in the rear of the vehicle for audio and other accessories. Its been a pain for me since I messed it up and even though I can and I already replaced my stereo with a more cheap unit, I still think I should try fixing this one. Any advice from the Guru or the students other than "throw that piece of garbage out" it seems I could separate the power suply from the rest of the board if I can identify whre the connection is been made.. any takers to help you will gain a lot of experience if we make it work or find a workaround. TIA for reading this far.
Hello Sorin hope you are fit and well and please continue to spread your knowledge and keep up the good work.However I would like to point out and I am sure you will agree with me that in order to fix anything or to find an answer to a problem one should know the workings of the subject in question.Therefore can I ask you to do videos where you walk the viewer through the actual workings of the laptop .How the voltage flows through each component on the motherboard what role do they play and where can they be located on any motherboard.God bless.
I have Dell laptop that died when there was a power outage, and it drained all the battery. After that it wouldn't turn on either on battery, or without battery. It stayed silent for 3 years, and soon I took it out and miraculously resurrected.
Very nice video! I just wished my laptop motherboard had components that easy to identify lol, everything is so small I can't even identify what are the mosfets to check =/
check the 4 pins.. 3 or 4 pins are always connected, if u have 3 pins connected , that side has the gate and so the other pin is the gate.. or in most cases u will see the track leaving the pin..
Oké, i sometimes watch these vids , not for a while though, but now this one was in my recommendations, and just bought a second hand laptop to try and fix up. Guess which laptop. indeed an i3 toshiba satelite from 2012, specs not sure, but looks exactly like this one. What to make of that, the coincidence (if it is just that !?) i mean. PS It was i think the only one of this channel on there, certainly the first one.
Nice! I have a stack of Toshibas I'm selling off before Windows 10 support ends next year. They are still good machines for basic Internet access and streaming.
I want to learn how to do this so much! Like, in familiar with low voltage stuff like wiring and I do know some basic electronics, but what kind of education would assist me with this?
I know there is a usbmeter to chek the fhones but i want to know, what is the name of the dc connector that sorin uses to check the amps that the laptop is taking and does it connect to a power supply?? Thanks
@@CanaldoZenny hello, dear friend, he knows it because the power supply for this model of laptop is giving 19v, it is always written somewhere on the power supply casing, check it yourself, hope that helps
New to your channel. Very Interesting video. What temperature do you use to reomove the small mosfet? New to these types of repairs with Rework station. Thank you.
Hi Please do you have beginner tutorial class on laptop repair and bios stuff, I don't know what a main power rail and all those voltage stuff, I would be glad if I could get ur beginner videos
I'm currently doing some research on Mosfets, and I'm wondering if I have something wrong. At around 11:38, he's probing what looks to be pin 8 (based on the dot) calling it the input, which according to the data sheet is drain, then he probes pin 1 calling it the output, which according to the data sheets is the source. It is my very limited understanding that the source (pin 1) is input, and the drain (pin 8) is the output, the PCB markings in the video even suggest this to be true. Can anyone provide some clarification regarding my confusion? Thanks.
when starting, the power light comes on for 5 seconds and goes out. The fan also works in those 5 seconds, there is no picture at all. Can you advise what to check first. It is the mbo la-b991p
Dear autor, how to reduce battery current to 50% or 30% to save battery in old laptop? How to change battery charge level from 95% to 80%. I have the same laptop. I have no this settings in bios like Dell Latitude models. How to do it in PCB? Thank you.
Hi My friend, i have the same mother board turns on but when i plug the exterior monitor in the VGA port the display on the monitor turns off and u have to know the monitor works fine with other mother boards, so what do you think the problem is ?
Hi Sorin and everyone. I have a Lenovo yoga 260 thinkpad laptop that I forgot the username, password and bitlocker key, is there a way I can delete the username, password and bitlocker-key please, I would really appreciate any help Great video thankyou.
Thank for the video ... pls i have a mini dell when yiu press the power button the system will display and cut off as if the power was remove from system without battery inside hope you get my message... i need your help
I owned a computer repair shop for 15 years. I’d say 50 percent of laptop repairs were bad batteries and overheating. Then it would be drives, screens and floppies in that order. We tended to stay away from main board replacements. Most laptops are too cheap to warrant the cost.
Hi to everyone, I'm trying to repair an old laptop for fun, I have some questions and I need help. I think that in my pc, the first and the second mosfet are shorted, I bought 5 chips with the code of the first one and now I see that the second one have a different one. I can put on the same or I need to buy and wait the other with the right code? Thank you!
its not about code.. u have p and n channel.. get the same format chip and u are ready to go.. most protection mosfets are n channels..the last nummer on the mosfet will tell u what it is.. N-channel MOSFET ends with even number
You could. All mosfets have three "legs". The 8-pin packages have 4 drain pins, 3 source pins and 1 gate pin. Your 3-pin packages just have to be able to handle the current.
5:12 warning for others: please do not inject 19v on the main power rail for fun, when normally that voltage is missing. You can be lucky, or you can inject 19V straight to cpu/gpu/chipset IF any of the mosfets or PWM controllers are partial damaged or not working properly. Always there is a reason when the motherboard cut down the main high voltage.
Sorin started...
with correct voltage - he injected 0.9V on the beginning to the main rail, and he discovered that there is no short, so he assumed that it is safe now to inject 19V. I agree with him, but he didn't told you about the warning, that if you want to inject 19V, you have to start from 0.9 in the first place, which is typical cpu/gpu voltage.
Smart
That is very common on every single tutorial on TH-cam that is not everyone is an expert, but the author often missed to just warning for newcomers.
thank you sir!
Excellent advice, thank you!!
Only thing I disagree is u commented str8 to the viewers instead of directing it to the maker of th3 tutorial Makin ourself seem smarter than the man himself, btch move
Amazing! If he hadn't taken time to explain, it'd take him 2 minutes start to finish. Have to say, Sorin you have a gift: Teaching difficult to grasp topics in a manner others can fully comprehend. Very few and also the very best university professors share this quality. (Most practice linguistic ambiguity. ) College kids: Sorin is an excellent standard to hold professors to. Before "add/drop week," professors who haven't made you understand concepts well the first week, a) can't & b) don't improve and c) waste your semester.) I feel blessed to be able to learn from you Sorin.
dissembling/reassermbling does take a few extra minutes at times. Quicker with Toshiba, older fujitsu. Some older HPs were a bitch
I work in IT but I'm a total noob in electronics. I just like watching your repairs cause it feels like magic to me. Also, you have a very enjoyable personality and explain what you do well.
I think in this day and time, you're doing god's work by not only repairing stuff, but also showing everyone how to do the same.
Kudos and much respect to you sir.
Totally agree with you on that! I work in tech too and find these videos so useful and enjoy every bit of it!
I want to thank PCBWay for sponsoring this channel. Sorin is one of the best at repairing laptops. Thank you very much on behalf of the community.
after i watched more than 100 your videos, finally i took a step to repair my own Laptop, and finally lucky me, found a shorted capacitor..
thank you very much for all lessons you gave to us Sorin,
Salute From 🇲🇨INDONESIA🇲🇨
Now you are ready to open a repair shop!
Hello Sorin! I subscribed to your channel and I love every video you produce.
All I wanted to say in this message is that I respect your work, humor and ingenious solutions for customers with "dead" laptops.
I just wanted to say hello and thank you for the great videos!
I really like each one! I'm a retired IBM technician at the former IBM Endicott facility, New York, USA (1974-2002) I'm almost 75 years old, and I don't repair hardware or software repairs any longer. Thank you very much! 😊
Rick White
Halo Mr Sorin. A very warm thank you from South Africa. I just fixe a Toshiba Satellite c850 with you help. Its probably same model laptop as this video of yours. And the same solution too. Thank you sir for giving me courage. I will post my successful repair on TH-cam very soon. One more time Sorin thank you very much to share your knowledge to us.
He is the one best ever guru presented on TH-cam. Naturally skilled! I learned a lot from him! Thank you Sorin!
I buddy that runs a computer repair shop had a bunch of laptops (40 plus) ranging from windows xp to10 that he just had sitting around because the recycling place he used to take them to shut down and he can't legally just dump them so he offered them to me since I like tinkering. I've never done motherboard repair so this going to be a fun skill to learn. First time seeing this channel and just subcribed.
I love ur passion in repairing electronics. It doesn’t matter wether the device is too old just focus on objective in finding out the problem. Keep it up Sir 🫡
Your channel makes me want to take electronic repair night classes as a hobby.
Nice. Along with other diagnosis and repair videos it shows how nice and simple things can be. I just need 1) the tools to deal with SMDs, 2) the eyesight to see that small properly, 3) the time to devote to dismantling, fixing and rebuilding, 4) the space to store all the tiny screws so that I can find them again when I can't meet the criteria for point 3), and 5) the courage to do it.
Every video should be like this, proper zoom, proper explanation.
My first time actually understanding how to trace power fault in 5 years + thanks a lot for this video sir
Spring, do you actually teach people this from scratch? Often there is too much background info on how these things work, some people only want to know a path to walk from power going in at each point so that they can actually see no power at certain points.
There are too many people that go through the science, ohms law, calculations etc and some people can’t take it in that way. The easiest way is to see a simple on off type of explanation to a circuit. That’s what you done in this video and I really enjoyed it. Simplified and no long winded explanation. Keep them coming!
always thanks Sorin for you video. this time I have a question. How you do find the 2nd Mosfet fault not charging IC. there is not gate signal and source voltage. you didn't even mention about the gate signal from charging IC. I thought becuase of no signal to gate. anyone can explain to me?
This is a 'Sir Sorin Repair School' ❤
Thank you master Sorin and may you live long sir 😇
Although I have not the faintest idea about electrics I love watching your work. Hope you can explain sometimes a little bit for us non-schooled watchers.
I love these older toshiba laptop even though they had graphic chip problems.
I've always wondered why the 2nd mosfet always smaller size than the 1st mosfet?
Bravo !!! Salutari din Chicago !!! Super lectie. I had a friend of mine having the same exact problem and was a Toshiba too. You are the best !!!
Not my cup of tea but it was so informative and well narrated. Well done my friend. Keep the videos coming.
I fix one loptop yesterday i follow the what sorin said.. And 3 more in this day.. Thank you for this man.. legend aim from Philippines.. Cellphone laptop technician. 😇😇😇😇😇
He lastly told the reason and true story. Good, many people wouldn't tell this. I am totally not a computer repairing guy, just an electronic engineer. Lately, l need to repair my failed old laptops. Luckily, l can find those motherboard schematics on the web. By tracing the problem, a failed mosfet on power rail area found, it was caused by a failed capacitor that shorting power rail to ground. Today, I see this video
Thank you for your easy and detailed way of teaching new students to have their way to be computer tech fans including me .
An absolute brilliant diagnosis!
slowly iam building my lab. still need a bench power supply GREAT info as all your other videos
Hi, love the videos, what temp is a safe temp for removing a mosfet like the ones in this video?
I own an HP9840WS this was the old Compaq with the same number, just before HP bought Compaq. At the time it was the flagship of Compaq. The problem history of this laptop is intersting. I noticed it got very hot (above 100C on the cpu area) and then it dit shutdown by itself. This happened about 10 seconds after the laptop was started. So i replaced the fan and pipe vents. Nothing changed. I replaced battery, same result. And finally i replaced the whole motherboard, and gues what? The problem is still there! I can figure out the second mother board i bought was very likely suffering the same problem. In one case like this , what part of the laptop you would start to look at?
I have a power suply issue on a most modert circuit. It has been dificult just to ID the components because I dont have the diagram. Do you have a video for this Chinese made electronics that apparently are made for NO service devices or "NOT Serviceable" therefore a buy-use-break-throwaway device but since they are quite expensive Im thinking they should be serviceable. At any rate, I am dealing with a car stereo head unit based on Android with a 7 inch LCD screen and Android Auto to control sound, GPS, Cameras, FM/AM Radio. The electronics on the main board are much smaller than the ones found on laptops but not necessarily impossible to work with, I am just missing the right tools. The way this unit broke was that it received +12v on the external amplifier remote control or remote start signal cable. This cable already has 12v coming from the head unit so I am not sure what it did. There are two hypothesis, that was the first, the second was that it did received a -12 vots from the secondary battery installed in the rear of the vehicle for audio and other accessories. Its been a pain for me since I messed it up and even though I can and I already replaced my stereo with a more cheap unit, I still think I should try fixing this one. Any advice from the Guru or the students other than "throw that piece of garbage out" it seems I could separate the power suply from the rest of the board if I can identify whre the connection is been made.. any takers to help you will gain a lot of experience if we make it work or find a workaround. TIA for reading this far.
Thank you for sharing all your knowledge with us. You are such a great teacher and explain things really well.
Hello Sorin hope you are fit and well and please continue to spread your knowledge and keep up the good work.However I would like to point out and I am sure you will agree with me that in order to fix anything or to find an answer to a problem one should know the workings of the subject in question.Therefore can I ask you to do videos where you walk the viewer through the actual workings of the laptop .How the voltage flows through each component on the motherboard what role do they play and where can they be located on any motherboard.God bless.
Thanks a lot Sorin. I always learn somthing with you.
Good work boss... I am in the journey learning motherboard troubleshooting... I have really learn a lot... God bless
Can you tell me sir please which model heading gun you use for remove the small chips or etc ?
I have Dell laptop that died when there was a power outage, and it drained all the battery. After that it wouldn't turn on either on battery, or without battery. It stayed silent for 3 years, and soon I took it out and miraculously resurrected.
Very nice video! I just wished my laptop motherboard had components that easy to identify lol, everything is so small I can't even identify what are the mosfets to check =/
You make it look super easy i have only one question how do you know which is the gate and the source leads on the mosfet?
check the 4 pins.. 3 or 4 pins are always connected, if u have 3 pins connected , that side has the gate and so the other pin is the gate.. or in most cases u will see the track leaving the pin..
Hi very nice videos. Could you show what kind of microscope you use!
Outstanding as usual. 😊
nice job thanks
really blessed by your lessons
greetings from Nigeria ❤❤
Oké, i sometimes watch these vids , not for a while though, but now this one was in my recommendations, and just bought a second hand laptop to try and fix up. Guess which laptop. indeed an i3 toshiba satelite from 2012, specs not sure, but looks exactly like this one. What to make of that, the coincidence (if it is just that !?) i mean.
PS It was i think the only one of this channel on there, certainly the first one.
...no more proper calibrated bridges :)
Those were the old gold days
I kinda liked that brute force approach.
The first laptop I ever repaired was using a proper calibrated wire I learnt from Sorin.
I'm so glad to chance upon your channel. You're truly a master imho
Hi Soren, can we just connect a jumper wire instead of the mosfet. What will be the effect on the laptop?
That’s amazing. My old MacBook died a few years ago. No power, not charging. I hope I can bring it back to life!
you have nothing to lose, please make a video while doing it (even if you burn it, it will be interestnig!)
If I was Captain of a Starship I'd want Sorin on board for sure 😃
please tell about smallest microscopic components in mather board and their uses
Nice teaching experience thanks Sorin 😊
Thank you for this. You make it very easy to comprehend
Amazing work hello from Puerto Rico love your work
Resetting bios password for these Toshibas is super easy. There's two pins next to the CMOS battery that you need to short and it's done.
Nice! I have a stack of Toshibas I'm selling off before Windows 10 support ends next year. They are still good machines for basic Internet access and streaming.
you can get windows 10 iot enterprise ltsc to update until 2032, there are ways to get it activated
I want to learn how to do this so much! Like, in familiar with low voltage stuff like wiring and I do know some basic electronics, but what kind of education would assist me with this?
respect sir got yourself a sub. your a wizard you remind me so much of my world of electrons intro class
Hello. Amazing work. I'm just curious how does one begin to learn repairs at this level. I've been wanting to learn but I don't know where to start.
I know there is a usbmeter to chek the fhones but i want to know, what is the name of the dc connector that sorin uses to check the amps that the laptop is taking and does it connect to a power supply??
Thanks
thanks for sharing sir more tips i always love to see more of your videos on how to fix laptop issues more power to ur channel
you make the work seems so easy👌👌👌
👌
How do you know what values the mosfet chips should output in the multimeter? And what setting are you using on the multimeter? I assume it is 20 DCV.
@@CanaldoZenny hello, dear friend, he knows it because the power supply for this model of laptop is giving 19v, it is always written somewhere on the power supply casing, check it yourself, hope that helps
Hi. what is the name of the soldering tool you use? thanks
Wow Sorin...you went from Beer to Champagne!
Congrats on your sponsor!
New to your channel. Very Interesting video. What temperature do you use to reomove the small mosfet? New to these types of repairs with Rework station. Thank you.
YO DUDE!
Your channel is PURE GOLD FOR ME!
HAVE A GREAT KARMA CREDIT Mr. ;)
❤❤❤
Im subscribing....he might give me some clues why my inverter is not working and how to fix it in the future :)
Hi
Please do you have beginner tutorial class on laptop repair and bios stuff, I don't know what a main power rail and all those voltage stuff,
I would be glad if I could get ur beginner videos
he has a lot.. just follow him or search on his channel
Hello
is it possible to, that you finde the fault by a Thermal Camera on the Board?
only when u have a current draw...
You have a very relaxing voice
I wish to be an apprentice to such a great pers9n. Thanks for the nice video🙏
I'm currently doing some research on Mosfets, and I'm wondering if I have something wrong. At around 11:38, he's probing what looks to be pin 8 (based on the dot) calling it the input, which according to the data sheet is drain, then he probes pin 1 calling it the output, which according to the data sheets is the source. It is my very limited understanding that the source (pin 1) is input, and the drain (pin 8) is the output, the PCB markings in the video even suggest this to be true. Can anyone provide some clarification regarding my confusion? Thanks.
hello Mr engine the mosfet you put in mother board donot carry the same number of damaged mosfet is it normal with power circuit
Thank you Sir for your time on this video. Helped me a lot.....Cheers!!
The most innofensive pcb way advertising ,....... Congratulation !!
PCB Way ... your design today , our products tomorrow .
when starting, the power light comes on for 5 seconds and goes out. The fan also works in those 5 seconds, there is no picture at all. Can you advise what to check first. It is the mbo la-b991p
I thought if the source & drain is shorted its the same as the mosfet being switched on?
Спасибо! Не ремонтирую ноутбуки, но за ваш труд и открытость - огромное спасибо! Хороших вам клиентов и интересных работ
How the screen go out it has HDMI can I use an HDMI cable to get picture use that as my monitor
Thank you, good video it held my interest till the end.
Dear autor, how to reduce battery current to 50% or 30% to save battery in old laptop? How to change battery charge level from 95% to 80%. I have the same laptop. I have no this settings in bios like Dell Latitude models. How to do it in PCB? Thank you.
Always good to listen to you
How do you connect your charger to the multimeter?
That's a good question to ask, now i am also waiting here for an explanation
This was a nice to the point and educational video
As always I have learned something. Thank You!
Hi My friend, i have the same mother board turns on but when i plug the exterior monitor in the VGA port the display on the monitor turns off and u have to know the monitor works fine with other mother boards, so what do you think the problem is ?
Sir, you are great. Thank you 😊
Hi, what is IC P24, motherboard burnt plastic cover
Fascinating .. love these repairs.
Hi Sorin and everyone. I have a Lenovo yoga 260 thinkpad laptop that I forgot the username, password and bitlocker key, is there a way I can delete the username, password and bitlocker-key please, I would really appreciate any help Great video thankyou.
Thank for the video ... pls i have a mini dell when yiu press the power button the system will display and cut off as if the power was remove from system without battery inside hope you get my message... i need your help
Please make a video how to fix dead, no power dell Inspiron 1570 pc
I owned a computer repair shop for 15 years. I’d say 50 percent of laptop repairs were bad batteries and overheating. Then it would be drives, screens and floppies in that order. We tended to stay away from main board replacements. Most laptops are too cheap to warrant the cost.
Thank you sir..Outstanding!..
The man is a genius.
Sorin, you are such a genius :-)
Nice Explanation
Thanks Respect E
Sorin😊
Sorry i probably have a banal question but I'm new to this world: how do you recognise the main power line of a motherboard?
Hi to everyone, I'm trying to repair an old laptop for fun, I have some questions and I need help. I think that in my pc, the first and the second mosfet are shorted, I bought 5 chips with the code of the first one and now I see that the second one have a different one. I can put on the same or I need to buy and wait the other with the right code? Thank you!
its not about code.. u have p and n channel.. get the same format chip and u are ready to go.. most protection mosfets are n channels..the last nummer on the mosfet will tell u what it is.. N-channel MOSFET ends with even number
In my case, I bypassed it. It worked, but the battery is not charging. Can we convert it with a 3 legs mosfet 😅
You could. All mosfets have three "legs". The 8-pin packages have 4 drain pins, 3 source pins and 1 gate pin. Your 3-pin packages just have to be able to handle the current.