You are surprising, not only because of the simplicity that solves things that are complicated, but also because of the patience you have in explaining in such detail. I'm watching every video of his like it's the best Netflix series, and I can't help but be amazed. I acknowledge that I have learned beyond what I thought I imagined, thank you for your dedication. A big greeting from Argentina
I only can agree, this guy taught me so much, it is incredible how easy and understandable he makes things. I just separated my iphone xs mainboard on my oven, controlling the temparature with an ir termometer, it worked well and i see now that my charging ic seems to be the problem ! He is GOD for me...
YES, you are good ! Using ohms, current and volts you work your way through complex circuits and solve difficult faults.. I like your term " bruit force" ! A great description.
From Last week I Found Your channel on TH-cam and that's what I am searching for. Now I watch your video everyday. And I like your beginner series put some other video like this. Thanks for Everything 👌
I have the exact same problem, and to think I found it myself with a chinese multimeter and a zippo petrol is beyond me. If only I came across this video earlier. I should mention that its my first time trying to diagnose a faulty motherboard. You sir are the best of the best. I told everyone that same thing you told us at the end. THE LAPTOP WILL WORK WITHOUT THE DIODE TRUST ME. Its only there to protect from universal chargers which exactly was the case of my laptop and why that diode went faulty. Thank you for all your lessons sir.
I don't know whether I'll be troubleshooting all that stuff that you do but lemme tell you one thing I watch them just to feel good and get pepped up. So much positive energy. Say suppose I cook a nice meal today and people compliment me that's because of YOU. Your , amps, volts and ohms makes it possible. 😀I think I should watch your video first thing in the morning and then go about my daily business for you feel great the whole day whatever happens. You deserve kudos. Thank you so much. Good luck, much love and best ever. Cheers. 👍😍
You've taught me much about motherboard repair. You're a very good teacher and i can see your channel going very far. Hope for the best for your future :)
I really appreciate your lecture videos sir, you are r really my mentor because following your videos has really improved my skills. Once again thank you sir.
@@eddieloius4592in almost all video of his where the motherboard is short,he uses power supply to inject some voltage to find shorts...I think,u just have to inject voltage which wont exceed the amount of voltage on that particular power rail,dont inject 19v into a 1.5v power rail,1v with a reasonable amount of amperage and some petrol would be enough to spot a short component getting hot
Thank you so much sir for this video and really grateful and thank God I met you early as I proceed in my journey as a Computer technician. You are my mentor and I look up-to you to become better
Nice work here, your work pattern and teaching technique are very easy to adapt, love the touch of humour while teaching too, makes learning much ore easy. Please, do i need to get a special kind of multimeter or just any good multimeter is ok to use to diagnose a motherboard? Awaiting your response.
I used a 12V / 21W bulb (from my car) in series with the 19V from the power supply to find shorts. It works fine and costs nothing. + -----------(12v/21w)----------- > 3A to test motherboard
Hey chief.. Thank you for the new lessons. Thank you for the 21:40 information. When i was watching your first video i was like, i don't know whats this dude doing. I don't know how he is gonna fix this.. at some point I've got interested. And now I'm here with some knowledge (like a cup of water from the sea). Now i think i should try to fix a real laptop motherboard. I'm gonna get one from junk yard. I'll try to fix it. (I know its too early, but let me try😂😂) Keep up the good work chief.. God bless you..
Another great video. Thank's a lot SIR! Did happen on my laptop. I took the diode out and it works now with my china charger lol. Thank's. By the way, you're the best! I learn so much from you!
I watch because this is very interesting to me .. im not a repair guy at all ... but i have been curious as to what that melting paste is when you remove or resolder those small chips
because a lab power supply will cut the power down in case of short in order to protect in self, so i lower the voltage i ask kindly ' please, are only 3.5v, can you supply 3Amps even if is short?' and she said yes :)
Look up ohms law it should explain it better, but basically the lower the voltage the harder it is for current to move at a given resistance. You can measure the resistance of the short and work out how much voltage you need for x amount of current to flow using ohms law. His power supply has over current protection and that is why it shuts off, 19v allowed more current than he would want or the thing could supply so shuts off.
I have seen this diode shorted before in other similar laptop repair videos. It is for reverse power protection. But if this diode shorted out it may have done so to protect the rest of the power circuits. So by not replacing it there will be no protection from this happening again. So maybe it is better to replace it.
Yeah, the only think I am not agreeing with Sorin it's not replacing the stuff he's removing. I believe that they are there for a reason and should be replaced, at least from another old spare motherboard. Other than that he is great at explaining and teaching us electronics repairs.
To punish, not protect. I have had this happen several times. Especially with Dewalt chargers. They do not like square wave power supplies. And it is only the Zener diode or coils with micro Henry's.
Great job, very clear explainations BIG Thanks. Just : how you locate the two mosfet after power in without schematics ? Even with the shematics, can't locate it on my HP :D :D
Just follow the big fat "+" track from the charging port. MOSFETs almost always look like that - big, fat, rectangular ;) Usually in a group of 2 right next to each other.
Hi sir. Great video. Also, do you have a video with a mobile printer direct connection to PDA (tungsten) with data and power. I want to connect my PP-55 printer directly to my Tungsten E2 because my ducking connection is lose. I think this is related to data and power connection from the motherboard. Thanks.
You are awesome! great teacher! i love to watch your video every time it's full of knowledge tricks and magic..best of best video ever seen. .Let me ask about the liquid you used for locating short components? is it gas, thinner or oil? thank you!
Hi Sorin, one thing I dont understand....beside charging port the secondary mosphet (big mosphet) from source there is no 19v, why dnt you remove that big mosphet, instead of Zenor diode???
I like all yours videos with common troubleshoots. Do you have any repair with integrated sound card issues on the board. I have a Sony Vaio with very low sound on earphones, but no sound on speakers? I changed all drivers but still no sound I suspect it is a hardware issue. Please help:)
Love your problem solving, but over voltage or over current kills laptops? If power supply with EXACT voltage and current as HP power supply is used, then laptop would be OK? Keep problem solving 👍👍👍
I think I had the same issue with some hard drive motherboards. When I did remove the hot diode the hard drive worked again. But I don't know if it's safe to leave it empty.
If just recovering the info - yes. But if you'll continue using the HDD as usual, better replace it so it has over-voltage protection ;) Damn, HDDs are real picky when it comes to power supply fluctuations :P
I really appreciate your video sir thanks alot Please i have mini samsung laptop that is not power but when i read the first mosfet with multimeter it give 18 volt instead of 19 volt please how i repair it sir Secondly i still have another samsumg mini laptop that is work but it is not display and i try to heat it still not please sir what is the next step do i need to take sir
Linear ones are preferred, especially if working on audio devices, but a good switching one is completely fine. After all, laptops' power adapters are switching power supplies anyway ;)
guys you buy the power supply 30v 10a. thats the way how check shorted board first we have two switch mosfet. and if u dont know just download the schematic diagram
![PASULOL รามเกียรติ์ ตอนที่ 4 นนทกพบรัก [Ramakien Ep.4: Nonthok in love]](http://i.ytimg.com/vi/tMUQgmZzf_A/mqdefault.jpg)
You are surprising, not only because of the simplicity that solves things that are complicated, but also because of the patience you have in explaining in such detail. I'm watching every video of his like it's the best Netflix series, and I can't help but be amazed. I acknowledge that I have learned beyond what I thought I imagined, thank you for your dedication.
A big greeting from Argentina
Extremely informative and entraining. It's like watching Sherlock, but with electronics. Thank you!
Totally agree with you :)
I only can agree, this guy taught me so much, it is incredible how easy and understandable he makes things. I just separated my iphone xs mainboard on my oven, controlling the temparature with an ir termometer, it worked well and i see now that my charging ic seems to be the problem !
He is GOD for me...
I think thermal camera is better However, you are an expert
Savage way - "bring amps and see what it getting hot". Love it!
I had the same issue with my HP 15. Found this video, removed the same diode and hey presto! Many thanks
You really should add a 25v zener diode to protect the laptop for over voltage.
I don’t like it that Sorin don’t add a new one too...
You are good, the best of the best. I'm watching everyone of your videos, thanks for sharing you knowledge.
Thank you
No no thank you 😀
I agree 100% This guy knows his stuff.
YES, you are good ! Using ohms, current and volts you work your way through complex circuits and solve difficult faults.. I like your term " bruit force" ! A great description.
Thank you dear sir. :) normally i dont comment on videos but you sir deserve it. keep up the good work.
I love watching you fix stuff, because you make it seem so easy and when i tried to do it myself it turned out it is not that easy. :D
From Last week I Found Your channel on TH-cam and that's what I am searching for. Now I watch your video everyday. And I like your beginner series put some other video like this. Thanks for Everything 👌
You not only a good engineer but also a good teacher .we can learn from you very easy way with difficult problem and this is amazing.
I have the exact same problem, and to think I found it myself with a chinese multimeter and a zippo petrol is beyond me. If only I came across this video earlier. I should mention that its my first time trying to diagnose a faulty motherboard. You sir are the best of the best. I told everyone that same thing you told us at the end. THE LAPTOP WILL WORK WITHOUT THE DIODE TRUST ME. Its only there to protect from universal chargers which exactly was the case of my laptop and why that diode went faulty. Thank you for all your lessons sir.
I don't know whether I'll be troubleshooting all that stuff that you do but lemme tell you one thing I watch them just to feel good and get pepped up. So much positive energy. Say suppose I cook a nice meal today and people compliment me that's because of YOU. Your , amps, volts and ohms makes it possible. 😀I think I should watch your video first thing in the morning and then go about my daily business for you feel great the whole day whatever happens. You deserve kudos. Thank you so much. Good luck, much love and best ever. Cheers. 👍😍
you have a very straightforward way of teaching your troubleshooting skills. great job.
Now I want to go back on my field of work and fix things again because of you Sir.. Your the best!!
You're a genius. I always spent time watching your videos.
bro you are a very wise guy there are a lot I am learning from you
I have one word to say to you, a genius
Bravo Sorin nice Lesson!!! Keep the school running!!!
Simplu şi la obiect.
Clipurile tale Sorin sunt excelente, multumesc pentru ceea ce faci !
e roman ?
@@vexx5955 Bineinteles
You've taught me much about motherboard repair. You're a very good teacher and i can see your channel going very far. Hope for the best for your future :)
I'm from Morocco and I always watch your videos. Thanks
This is great lesson. I did not know that power supply 19V can work on so high voltage. And, of course, a purpose of that diode now is known. Thanks.
The diode is their to punish the consumer for using a copy cat charger LOL that was a nice and quick repair video as always
I really appreciate your lecture videos sir, you are r really my mentor because following your videos has really improved my skills. Once again thank you sir.
Hi sorin , it was one of your best video ,it was perfect .please upload more .keep it up
Yes you correct sir...and what I am understand about this 19v diode is spike for mother board ...
one of your best videos of all time
Sir,can you please do a video on how to use the power supply on motherboard the amount of current and voltage when looking for short
ok, i will
@@electronicsrepairschool yes we are expecting this please do it
Did he do that video. I don't see it. Please
@@eddieloius4592in almost all video of his where the motherboard is short,he uses power supply to inject some voltage to find shorts...I think,u just have to inject voltage which wont exceed the amount of voltage on that particular power rail,dont inject 19v into a 1.5v power rail,1v with a reasonable amount of amperage and some petrol would be enough to spot a short component getting hot
Thank you so much sir for this video and really grateful and thank God I met you early as I proceed in my journey as a Computer technician. You are my mentor and I look up-to you to become better
Nice job. But can you please explain your method in how you find the short using power supply, and thank you a lot Mr. Soren.
Its simple..if there is a shorted parts.it will get hot,try to watch other videos of mr.sorin.
Thank you so much. We benefited a lot and learned. Provide a clearer explanation Thank you, teacher
Hey Sorin nice videos mon you are the best...question where to check when u have no charging issues?
You have a Gods gift.. Very nice.. God bless you brother
Nice work here, your work pattern and teaching technique are very easy to adapt, love the touch of humour while teaching too, makes learning much ore easy. Please, do i need to get a special kind of multimeter or just any good multimeter is ok to use to diagnose a motherboard? Awaiting your response.
I used a 12V / 21W bulb (from my car) in series with the 19V from the power supply to find shorts. It works fine and costs nothing.
+ -----------(12v/21w)----------- > 3A to test motherboard
How does it work..can you teach me please
Hey chief..
Thank you for the new lessons. Thank you for the 21:40 information.
When i was watching your first video i was like, i don't know whats this dude doing. I don't know how he is gonna fix this.. at some point I've got interested.
And now I'm here with some knowledge (like a cup of water from the sea). Now i think i should try to fix a real laptop motherboard. I'm gonna get one from junk yard. I'll try to fix it. (I know its too early, but let me try😂😂)
Keep up the good work chief..
God bless you..
super tare :) daca as fi avut un asemenea profesor in liceu eram departe. multumim pentru lectiile predate
Another great video. Thank's a lot SIR! Did happen on my laptop. I took the diode out and it works now with my china charger lol. Thank's. By the way, you're the best! I learn so much from you!
sir u r excellect . i always see your video and many things to understand. u r the excellect hardware teacher.
i love your teaching and how to repair loptop
Hi Sorin , hope all is good for you & your family .Weather been a bit hot . : -}
Thanks a lot for sharing your experience and all those best practices.
Nice work Sorin i like your approach to trouble shooting do you ever do any bios reflashing ?
I watch because this is very interesting to me .. im not a repair guy at all ... but i have been curious as to what that melting paste is when you remove or resolder those small chips
Thank you for sharing your knowledge and experience!
Thanks for this great video. Can you please explain a little further why you cut down 19V to 3.5V ( in video at about 12 minute)?
because a lab power supply will cut the power down in case of short in order to protect in self, so i lower the voltage i ask kindly ' please, are only 3.5v, can you supply 3Amps even if is short?' and she said yes :)
Look up ohms law it should explain it better, but basically the lower the voltage the harder it is for current to move at a given resistance. You can measure the resistance of the short and work out how much voltage you need for x amount of current to flow using ohms law. His power supply has over current protection and that is why it shuts off, 19v allowed more current than he would want or the thing could supply so shuts off.
I have seen this diode shorted before in other similar laptop repair videos. It is for reverse power protection. But if this diode shorted out it may have done so to protect the rest of the power circuits. So by not replacing it there will be no protection from this happening again. So maybe it is better to replace it.
Yeah, the only think I am not agreeing with Sorin it's not replacing the stuff he's removing. I believe that they are there for a reason and should be replaced, at least from another old spare motherboard. Other than that he is great at explaining and teaching us electronics repairs.
great video i just want to ask you said the purpose of that diode is protecting voltage from different charger?
probably over voltage ONE TIME protection
thank you
same problem sir in Compaq Presario CQ40.....i hope i fix it.....thank you very much for the video......great...great great
your are the best! i cant stop watch your videos, i am a laptop tech but not as good as you ;)
another great video ,the explanation so clear ,, ty for this video sir
Wow man your so good, i like all your videoa its give me a lot of knowledge on how to troubleshoot correctly..
Man, Sorin rules, I was going nuts thinking "He has to replace that damn diode or the board will be dead"
Removed the same diode as you did and the mother board went live. Thanks so much....YEAH?? 😂😂😂😂
Very professional, thanks for a great video and for explanations! you are a great man!
sir i very thankful to you for explaining each step wise and good suggestions thanking you sir
Thanks for Another great video! hope you get more complicated repairs for us to be able to learn more from you. =)
do you also fix desktop pc?
You are so good and skillful man.
Tnx for the nice videos.. I actually use a temperature meter to locate the defective part. It is not so painful :)
lucky you :)
Hi Sir, around how much should I charge for that job, you have any idea?
Time is money not the key, hi hi , salut Sorin, numai bine
To punish, not protect. I have had this happen several times. Especially with Dewalt chargers. They do not like square wave power supplies. And it is only the Zener diode or coils with micro Henry's.
great professional, and humble enouph to teach others, thank you
Great job, very clear explainations BIG Thanks. Just : how you locate the two mosfet after power in without schematics ? Even with the shematics, can't locate it on my HP :D :D
Just follow the big fat "+" track from the charging port. MOSFETs almost always look like that - big, fat, rectangular ;) Usually in a group of 2 right next to each other.
That was a transient voltage suppressor diode. The laptop is no longer protected against static discharge, or lightning damage, or dodgy chargers. :)
Great job mr. sorin! 2 thumbs up!
You are an Electronics Spartan believe me ... TH-cam needs to do that "Robot test" thing on you
What would you have done in his place?
Hi sir. Great video. Also, do you have a video with a mobile printer direct connection to PDA (tungsten) with data and power. I want to connect my PP-55 printer directly to my Tungsten E2 because my ducking connection is lose. I think this is related to data and power connection from the motherboard.
Thanks.
Great as usual, laptop repairing lesson. Thank you a lot.
Could be possible to have a dead laptop with more than one kind of component shorted to ground?
can be...
wonderfull by the way new mosfet what type r they
Amazing videos !! I will buy thermal camera to avoid burning my fingers😀
I'll burn my fingers, cause i can't afford to burn such a hole in my pocket rn 😂
Many times I watch your videos, genius one :)
Great video sir. A doubt sir. In a 3.3v rail short, how many volt and amp to find the short. Thanks in advance.
I love to watching your vedios very informative .great job boss
Great mr Sorin, you are the best!!
I think protecting MB with a zener diode is a bad idea [when you are using a switching power supply]. Just think about the higher spike like 35-40V..
Good work
You are awesome! great teacher! i love to watch your video every time it's full of knowledge tricks and magic..best of best video ever seen. .Let me ask about the liquid you used for locating short components? is it gas, thinner or oil? thank you!
You can use either petrol or kerosene but petrol works better
Hi Sorin, one thing I dont understand....beside charging port the secondary mosphet (big mosphet) from source there is no 19v, why dnt you remove that big mosphet, instead of Zenor diode???
Thanks to give practical knowledge
ive learnd so many here as a simple way to power :)
You are my best favorit youtuber thanks .old school heeee
You’re done a good job
I like all yours videos with common troubleshoots. Do you have any repair with integrated sound card issues on the board. I have a Sony Vaio with very low sound on earphones, but no sound on speakers? I changed all drivers but still no sound I suspect it is a hardware issue. Please help:)
Love your problem solving, but over voltage or over current kills laptops? If power supply with EXACT voltage and current as HP power supply is used, then laptop would be OK? Keep problem solving 👍👍👍
He made a video of that explaining over voltage and over current th-cam.com/video/zdlxtqAhJWw/w-d-xo.html check it out
Very good vid! How much that job is worth aproximately Sorin?
Sir, have you upload any video on mini laptop where everything's are on board and could not display.
I think I had the same issue with some hard drive motherboards.
When I did remove the hot diode the hard drive worked again.
But I don't know if it's safe to leave it empty.
If just recovering the info - yes. But if you'll continue using the HDD as usual, better replace it so it has over-voltage protection ;) Damn, HDDs are real picky when it comes to power supply fluctuations :P
Hi. Whats the heatgun setting you are using? Thanks
Hi sir
Did you change the diode
God Bless You... MasterBoard Saver ;)
nice way.. very nice thanks for sharing your knowledge..
Nice video,great job as always...
Hi , no matters how careful i am , i usually end with at least one extra screw when closing a laptop back , how many you end up with?
I really appreciate your video sir thanks alot
Please i have mini samsung laptop that is not power but when i read the first mosfet with multimeter it give 18 volt instead of 19 volt please how i repair it sir
Secondly i still have another samsumg mini laptop that is work but it is not display and i try to heat it still not please sir what is the next step do i need to take sir
I like your idea of using zippo to detect shorts/hot stuffs...
Nice vid, Sir what kind of Power Supply would you use in Brute Force method, Linear Power Supply or Switching Power Supply?
Linear ones are preferred, especially if working on audio devices, but a good switching one is completely fine. After all, laptops' power adapters are switching power supplies anyway ;)
guys you buy the power supply 30v 10a. thats the way how check shorted board first we have two switch mosfet. and if u dont know just download the schematic diagram
👍👍👍
Thanks for sharing your knowledge