I recently join this channel..Only to realize there a pple like you Who fill my mind with advanced electronics.. You are super my mn..only geographical distance is the barrier.. GOD BLESS YOU WITH SUCH UNIQUE LESSONS

Sorin it is because of videos like this that so many people have great respect for you. Your explainations to us viewers at the beginning of this video was very understandable. We don't just look at you as a great technician, thorough teacher and all around great guy; but one we can trust to tell us the truth. I have never met you but I feel you are one of the most honest men in the world. The stories you tell us have such great wisedom and knowledge that we can't get from anyone else. I really appreciate that you share so much with us. Both professionally and as a friend.

Dedicated work within the time limit of 4to5 complicated laptop repairing and mobiles and giving information to staff and returning to the teaching video . We all thank for the camera, microscope toggling and power supply, mulitmeter, ammeter on the video corner for the valuable information atonce. You are a great man for the world......seeking 4 electronics...,.thank u.

Fantastic videos, great for learning. I have just recently come across your channel and is already one of my favourites.

This is the simplest and best teaching I found on youtube, a great job thanks.

Thanks to you I was able to bring to life my dead Dell spx labtop . Thanks for sharing you knowledge.

Out of all of KZfaq videos you are the best I have seen, i have downloaded all your videos , thank you very much for your help, i wish you all the best my teacher.

I have felt my brain growing watching this video and googling things I did not understand at the same time. Thank you so much! xd

I love this man, kudos to you Sorin, appreciate your work mate.

Thank you sir. This was not even told in schools. Simplified explanation.

THESE ARE SO EDUCATIVE so keep 'em coming

Thank you a lot. I watched part 2 before part 1. Awesome.

Thank you, you are so good. I learn so much. Keep your wonderfull job. We need people like you, the best of the best.

Just perfect! Thank you so much for your explanations! It is very useful as a beginner!

Thank you for sharing your knowledge Sorin! God bless you 🙌

The best practice I could ever have, from you, many thanks to you, seriously ! ;)

Sir, first of all i am thanking you for your vedios. i am watching these related field vedios for a long time. but i catch your one recently. ur vedios amazing, , because you teach the real time experience and further more its very clear. i want to add some things here. i noticed when you explain , if you can give some information on the theory part and do the practical part, it will be more use full. i need more vedios on iphone repairing, the basics, and fault finding. very good teacher you are.

guys change the playback speed to 1.25 in video settings... you`ll thank me later

Thank you for this video sir. I keep on watching again and again just to understand every details of it. I wish i had your talent on how to fix motherboard easily.

You know what sorin, all your video is really informative.. im learning alot. i just have abit knowledge about electronic. but all your video make me learn alot of things.. u are best teacher ever.

Thank you a lot! Your videos are great! I fixed my Lenovo Laptop. Your explanations are the best

39:18 😂😂😂 How you understood what im thinking.. 43:12 Why i choose this motherboard, its old one... 😂😂 Anyways its a very helpfull video for me. And thanks a lot for your effort to enlighten people. Again thank you master. Keep up the good work.... God bless you.

thank you so much..I really learned something everyday from your video..stay healthy and more power..I'm excited everyday waiting and watching your video..thanks alot again..

i live boring life now...and this man has made it exciting again...im hungry for knowledge and kicking myself about all the laptops my family friends and girl have thrown away .

Very educational video, not one on all youtube can even remotely tip on you. i have a degree electronics and learn more in your videos then all the time i sat on the schoolbanks. I you like and if you find the time could you explane about all the writings on pcb boards and motherboards please there is so much information on there but i have no clue what it means. Thank you for all the great lessons.

Ez nagyon hasznos volt, köszi!

i always wanted to thank u , love from Egypt.

great work sir . and thanks for the video

"Where are my mosfets?" should become a shirt.

great vids I'll be a patron when back in work

great videos...step by step explanation .thanks

Thank you so much for all Respects

you are a great teacher keep videos coming A*

My biggest problem as a learner is getting old motherboards. Everyone wants surprisingly a lot of money for them, even when broken. Like AUD$50 each.

very nice sir.. thank you for teaching us here in your youtube chanel.

This is golden! Thanks!!

That scene when Neo has Kung Fu loaded into his brain - watching this channel does the same thing. You learn electronics Kung Fu on steroids.

very helpful thank you Sorin

Your videos are excellent, thank you.

thank you so much good job we badly need practice your friendly method is wonderful very vivid ,not like others who give a cold speech like an answering machine i feel like i am besides you in your workplace

Thank you, for sharing your knowledge, the video will help me to understand better the process and troubleshooting motherboards.

Foarte frumos! mulțumesc!

Very informative videos sir. Thank you

your the man sir,,,i watching your video i learned a lot of you.keep sharing boss

Am doing great because of the knowledge i had from your lessons sir. I can fix charging problems for laptops just by following the 19volts line pass as you just showed us easily. I call today's lesson as GENERAL DIAGNOSE OF ALL POWER SUPPLIES ON A PC MOTHERBOARD. I came across a HP 840 misbehaving i believe the 3.3v power supply on bias is not working ,i will give the feedback on comment. Thanks sir

thank you for your teachings God bless you

Your tutorial make me understand more about motherboard, great job sir.

Thank you Sorin!

Lovely video Sir...the way you teach i like that.its awesome.thank you for sharing your experience.

This was really good video! I tryed about 1 year ago to repair asus laptop, which the problem was, that it power light turned on and fan was spinning, but the screen was black. It went horribly wrong when I measured with a little knowhow voltages from various places, there were 19V and 1,8V present. When I measured voltages from resistor network (it was mistake) my test probe shorted 2 pins from resistor and it caused more problems. Now there is shorts across graphig chip's very small capacitors. And also across some other ceramic capacitor. With this video and others i know now a little bit more about motherboards.

that NEC low ESR cap under CPU is often faulty after couple of years. MOBO wount start. Hot air test it. Replace it with 4 tantals and 4 ceramics suitable for this power rail.

You may know your stuff really well and can relate your knowledge to people who are experienced but not to “newbies”.

thank you sir a lot, for sharing your knowledge.

Great video thank you!

love the work you are doing 1 question what tool are you using for the amp/volt/current you use it on mobile charging keep upthe good work

Awesome job .

great video, not sure I know when your using the multimeter or the voltage probe, would help if you labeled them or mentioned it as you work.

You are awesome man!!!

THANKS FOR YOUR VIDEOS

There are 3 section in power supply 19v 1 Adapter V - in supply to 2 fet 19v coming from main fuse which connected with charging section and discharging section . And Step Down section which providing 3v and 5v . But from main fuse 19v providing individuals supply as I/O Ic and GMCH, ram section , ICH , and Step Down section.

Thank you for for talking about the differences between shops. It's hilarious listening to kids who have done 5 computer jobs in their whole life and average 1 per week talking about how repairs should be done. Good luck surviving anywhere other than working for yourself with that sort of flow. Talk to someone when you're handling 25+ jobs a week.

thanks Sorin so much!!!

thank you very much,dear master,that was perfect

nice lessons repairman i like your way of teaching

Good approach.tu+sub you make it look easy but that's because you have experience.

Great I confident to repair Laptop. Thank you. What is your brand of multimeter that you are using? Top

TNX Mr / i learn many from this video

good information, thank you ...

Thank you for uploading this video. I wish i could dive deep more into electronics, may i ask where should i start studying. thank you so much.

You are the best. Greetings from Spain!

but i so much like the way u diagone the faults ,is so satisfying

HELLO YOU ARE MY ELECTRONIC LEGEND!!!KEEP IT UP! CAN U TELL ME WHERE IS THE VCC IN THE MOBO?

great as usual!!

hello KUDOS to you Sir... Ive learned so much... thanks for sharing and teaching us... God Bless You and More Power...😍👏👏✌✌👍👍

actually sir ,the voltage going on the bios chip is called an LDO voltage n is supplied by the pin number 8 of the standby ic (tps51125) n the 5v from pin number 17 before u get the actual 3.3_5v coming from pin 7 n 24 .the LDO is also the voltage u get on the power button .

Hi, I've seen your videos and they are really helpful. I have a burned motherboard and I tried to check the power of 19v. I hadn't started my test when I accidentally touched a coil power supply and almost burnt me. Does it mean that coil is dead or I should look somewhere else? Thank you

North Ridge Fix finds the board shorts with his diode mode. He just searches the board till he finds no 1/2 volts to ground. When he finds no drop he knows where the short is. He has a thermal camera and he finds where the heat is by putting more and more amps at 1.3v, upon removing that chip, if diode mode finds no short he has the fix.

i am an electrician but i like the way you teach people on your chennal

Thank you

this lessons is for texnical school bravo.........more bravo......thenks

many thanks, sir.

Very nice video thank you so much !

Hello sir... you are so great... i am following your all your videos.. its very interesting and knowledgeable, thank you once again. I have 2 doubts, if you could please help me to clear it.1. How do we confirm whether the BIOS is not working, any symptoms or checking points etc.. even after there is 3.3V and 5V ?2. How do we confirm controller chip has issue?

Repairing without schematic you are real pro.

nice video..thank you very much...just want to clear something, which probably a noob question ...i am new to laptop board repair..,,just want to ask...when testing the power supplies of the laptop..all ceramic caps should have voltage or those only with coil and mosfets...and you list down for me, if is it ok..the voltages need to be test..like what you said 19v for the power jack all the way to the capacitors and 3.3v for the bios, 5.5v i think for the USB and 1.5v for the RAM. is there anything else...sorry for the question if annoys you..thank you very much again...big help..

this is too good keep it up from Africa ghana

The beginning of the video was so good, especially explaining the power supply parts. But later I got lost, I don't know what's going on, and how he can find where's the problem?

The samsung board looked like an NP R530. ? I am not sure it matters whether its old or not as it shows people like me how you arrived at solving the problem. Well done.

just very nice

any 3.3v well come from ic chip , normal power supplies circuits dont gives u that voltage

thanks for the video, more power ,godbless

i really like your video's . go on like this :)

Thanks for video

U r the best.... PLEASE MAKE SAME TYPE OF VIDEOS ON IPHONE. PLEASE INs and OUTs Of iphone.....IT WILL BE A BIG HELP

Hi' I need some help and was hoping to get some advice as I can see you are a very experienced professional. I have a Legion Y520 by Lenovo, it was 3 days ago while playing a game called dying light my laptop suddenly shut off. Since then it is not turning on neither is the charging light turning on when plugging in. What I found checking with a multi meter is that the battery has 11 volts plus left but if I plug it into the board and check at the connector it shows me .02 or 0 volts. The power connector has the correct voltage which is approximately 20 volts. I have been watching tour videos and wanted to start from the first one with regard to laptop repair. Just above the power input on the board are what look like two mosfet. The first one shows 19 volts on one side but nothing on the other and in beep mode it beeps if I connect the probes to both sides. The mosfet or whatever it is next to this first one is not getting any input and obviously no out put. On connecting power to the board the first one gets burning hot and the second one does too but not as hot as the first one. These chips do not look like a regular mosfet as i have seen in your videos and looks more like those BGA chips and components. There are no legs like the ones in your video but there are small dots which are on the edges of this component which is where I took the readings from these are both just above the power connector on the board one after the other moving upwards. There are a few capacitors the small aluminium types and they dont show any power at all. Could you help me identify the tracks and components or confirm that the one getting hot is the bad one because by looking at it and its edges I can see the effect of excess heat like the area around it seems like it melted and then got back to normal. I tried the troubleshooting steps like the static discharge with both power and battery, then each of them individually and even the bios reset. All I found on the net on Lenovo support was that they changed the motherboard in most cases with one saying he was told it is a motherboard fault and will take almost a month to be sent where it'll be repaired or replaced and sent back, but when he left it with them they called him after 2 days to come and get it as it was fixed. They told him it was a bios issue which is quite strange but I hope you would know whether it is possible to be a bios issue which isnt letting the laptop even power on. How would I be able to flash the bios on a non working board if I want to see if it is the same case as they told this guy which was not letting it start. It is a really expensive laptop here in India starting at around $1100 and I have the core i7 7700q model with 16 GB of ram, nvidia 1050ti 4gb graphics, a 512 gb name ssd Samsung evo, a 2 tb sshd, and windows ten. I can send you a picture of the board and have the schematic file but it doesnt show the board like I have seen in schematics for other electronic products or gadgets where it is shown the way it is laid out and components are labelled and marked in their respective place on the board. I look forward to any help I can get and will be grateful if you could tell me where to start watching your tutorial videos from. I just know the basics of electronics I would say bare minimum and have some experience soldering as I made some projects using components and some arduino projects too. But I would appreciate any info I can get as I consider myself a total noob. Thank you for reading this. Regards shantanu

greetings from the phillipines... sir.. thanks for the video...

it is a fantastic lesson i jUst have one question how can i locate the GPU CHIP IN ANY MOTHERBOARD

Thanks mate for sharing your knowledge! A question: why do you check for continuity with diode mode? (indstead of resistor mode or real continuity mode?)

i'm going to have nightmares about not being able to find mosfets after this video. thanks sorin.

The vots 3.3 & 5 exist in around ic charg but i see in that mosfet 13 volt