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...
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
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.
@@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
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
I Like This Your Video... I Learned Very Much... But My Laptop Is Of Accer Swift SF315 52G 55A There Was Loose Plug Pin On The Wall... And It Was Get Sparking... And Laptop Got Dead... I Checked With Multimeter On Diode Mode... For 3 Mosfet... 2 Mosfets With Same No. 4843 NS. One Is Near The Battery One Is Near The Charger Port ... The First Mosfet To Charger Port Is 9410 AMG Mosfet ... The 2nd Mosfet Is To Charging Port Is 4843 NS Which Is Showing Very High Value To Its Another Same IC Which Is Near Battery... So 2nd Mosfet Gives 434 and 1950... I Checked Something Is Getting Hot Or Not With Charger Only... I Don't Have Ampere Test...
im watching your video from 5000 miles away . and trying to fixing my acer d270 mini laptop dead! still failure :( BRUTE FORCE does NOT HOT ANY PARTS !
I don't understand..this part.. what do you mean when you say you want to put amperes a d find out what getting hot... do you power on the laptop then touch the parts to get what's getting hot
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???
Hi. Find a short after a mosfet but I think my power supply (Lavolta) is protecting itself, even if I put 3 V. When I check the shorten, the Power Supply Lavolta go down from 3V (my tuning) to 0,4 V... . I precise that I already use your tip : add a 1 meter cable for the test pin (from power supply) to simulate a receptor, and avoid auto protection of it. Any idea ?
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.
Hi good afternoon I have Laptop Toshiba satellite L755 doesn't turn on I see only power and battery' LEDs lighten i thank forward for your responses. Best regards
@@Todestelzer The diode don't protect the laptop, that's why it's in Sorin's hands. It's purpose is to stop the laptop from working when another power adapter with only a few volts over spec is used. Voids the warranty if use any power adapter other than HP. The fuses on the board protect the laptop and using the correct power adapter is what really protects the laptop.
If a diode is burnt that is supposed to protect the board from "high voltage" maybe it took a hit and saved the board. If that is the case, then it is necessary, because next time the board will get destroyed and it won't be an "easy fix".
Hello can i ask? my laptop charger is dead but i bought a new laptop charger and it is Liteon 19v / 4.74 amps but in my case, when i touch the metal ring and plugged my charger, it shocks me a little bit but it will immediately gone and it is working well on my laptop but is there no problem on my charger? anyway, in our country, philippines, we do not have an grounded outlet.
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
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.
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 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.
Master ..one doubt if second fet not get 19 voltage and not showing short also ..what problems and where I have to check...gate section or ???? Pls clear my doubt....
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 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
If you know which IC goes there you can check it by the datasheet of the IC. It probably says NC - like not connected. But looking only the board i am quite sure those pins that ripped off are NC. The left one for sure, right one most probably, but the photo quality is not that good to be completely sure.
From Last week I Found Your channel on UA-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 👌
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.
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...
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.
Thank you dear sir. :) normally i dont comment on videos but you sir deserve it. keep up the good work.
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
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.
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
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
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
I think thermal camera is better However, you are an expert
Savage way - "bring amps and see what it getting hot". Love it!
You're a genius. I always spent time watching your videos.
God Bless You... MasterBoard Saver ;)
Can I check If something is getting hot just with plugin the charger cuz I don't have the power supply ??
You can't, because the laptop's adapter has overcurrent/short protection and it shuts itself off when used over its limit.
Hi sorin , it was one of your best video ,it was perfect .please upload more .keep it up
Thank you so much. We benefited a lot and learned. Provide a clearer explanation Thank you, teacher
another great video ,the explanation so clear ,, ty for this video sir
learn us HOW WE CAN USE POWER SUPPLY please ..thank you BOSS
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.
Simplu şi la obiect.
Clipurile tale Sorin sunt excelente, multumesc pentru ceea ce faci !
e roman ?
@@vexx5955 Bineinteles
Wow man your so good, i like all your videoa its give me a lot of knowledge on how to troubleshoot correctly..
do you also fix desktop pc?
I Like This Your Video...
I Learned Very Much...
But My Laptop Is Of Accer Swift SF315 52G 55A
There Was Loose Plug Pin On The Wall...
And It Was Get Sparking...
And Laptop Got Dead...
I Checked With Multimeter On Diode Mode...
For 3 Mosfet... 2 Mosfets With Same No. 4843 NS.
One Is Near The Battery One Is Near The Charger Port ...
The First Mosfet To Charger Port Is 9410 AMG Mosfet ...
The 2nd Mosfet Is To Charging Port Is 4843 NS Which Is Showing Very High Value To Its Another Same IC Which Is Near Battery...
So 2nd Mosfet Gives 434 and 1950...
I Checked Something Is Getting Hot Or Not With Charger Only...
I Don't Have Ampere Test...
Removed the same diode as you did and the mother board went live. Thanks so much....YEAH?? 😂😂😂😂
My SAMSUNG Laptop motherboard problem how to solve plez
The problem is not power on & not changing
Hey Sorin nice videos mon you are the best...question where to check when u have no charging issues?
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..
im watching your video from 5000 miles away . and trying to fixing my acer d270 mini laptop dead! still failure :( BRUTE FORCE does NOT HOT ANY PARTS !
I don't understand..this part.. what do you mean when you say you want to put amperes a d find out what getting hot... do you power on the laptop then touch the parts to get what's getting hot
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???
Yeahhh 🥰🥰🥰🥰
Hi. Find a short after a mosfet but I think my power supply (Lavolta) is protecting itself, even if I put 3 V. When I check the shorten, the Power Supply Lavolta go down from 3V (my tuning) to 0,4 V... . I precise that I already use your tip : add a 1 meter cable for the test pin (from power supply) to simulate a receptor, and avoid auto protection of it. Any idea ?
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.
Hi good afternoon I have Laptop Toshiba satellite L755 doesn't turn on I see only power and battery' LEDs lighten i thank forward for your responses. Best regards
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...
@@Todestelzer The diode don't protect the laptop, that's why it's in Sorin's hands. It's purpose is to stop the laptop from working when another power adapter with only a few volts over spec is used. Voids the warranty if use any power adapter other than HP. The fuses on the board protect the laptop and using the correct power adapter is what really protects the laptop.
nice way.. very nice thanks for sharing your knowledge..
You removed the planed obsolescence , now the manufacturer is short on sales... :)), that diode was there to make you buy another laptop.
You have a Gods gift.. Very nice.. God bless you brother
I have the exact same board but mine I have the 5VS5 but 3VS5 is missing. It's giving me a headache
If a diode is burnt that is supposed to protect the board from "high voltage" maybe it took a hit and saved the board. If that is the case, then it is necessary, because next time the board will get destroyed and it won't be an "easy fix".
Hello can i ask? my laptop charger is dead but i bought a new laptop charger and it is Liteon 19v / 4.74 amps but in my case, when i touch the metal ring and plugged my charger, it shocks me a little bit but it will immediately gone and it is working well on my laptop but is there no problem on my charger? anyway, in our country, philippines, we do not have an grounded outlet.
bro you are a very wise guy there are a lot I am learning from you
I thought the mosfet is on short and we will make a jumber I really didn't understand this video please help me understand
you have a very straightforward way of teaching your troubleshooting skills. great job.
Thanks you man!!!!!!!
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
Bravo Sorin nice Lesson!!! Keep the school running!!!
Thank you for sharing your knowledge and experience!
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
Hi Sorin , hope all is good for you & your family .Weather been a bit hot . : -}
👍👍👍
Thanks for sharing your knowledge
HP loves to punish their customers with these designs. The printers are worse.
You are my best favorit youtuber thanks .old school heeee
Thanks to give practical knowledge
I love to watching your vedios very informative .great job boss
My goodness truly a mcgyver in elecronics repair.
They wired it that way to make you use their proprietary charger. Sneaky!
if it was there to protect the board, you will also have a fuse in series before the diode .... but this is not the case.
Up to thirty volts even... The mosfets used in most models these days are rated as such.
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
Great way... Savage way.... it's awesome..
How check which ampier short problem and how to setup
im wondering how the laptop worked when those diode pins on the motherboard are not bridged!
دست خوش آفرین مهندس به این میگن حالا تو ایران نمیتونه درستش کنه
How can I fix my hp15 laptop power on but not displaying?
Did you try the basic thing to do like changing the ram?
Very professional, thanks for a great video and for explanations! you are a great man!
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 😂
Good work
13:31 :D
painful :)
Nice... Punish The Customer... Yeah
Great mr Sorin, you are the best!!
Hi. Whats the heatgun setting you are using? Thanks
I love zeners alway easy fix
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.
Great job mr. sorin! 2 thumbs up!
thumbs up 👍🏻
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 ua-cam.com/video/zdlxtqAhJWw/v-deo.html check it out
You're Good can I join your training
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.
Master ..one doubt if second fet not get 19 voltage and not showing short also ..what problems and where I have to check...gate section or ???? Pls clear my doubt....
Desolder the 2nd MOSFET and test it, compare your results with its datasheet? How did you solve your issue?
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.
same problem sir in Compaq Presario CQ40.....i hope i fix it.....thank you very much for the video......great...great great
What is zippo whats it called
Time is money not the key, hi hi , salut Sorin, numai bine
Big fan and love watching your video's :-)
Do you need to replace that zener diode?
nice job, and good video, tanks for sharing.
one of your best videos of all time
Nice video,great job as always...
I have one word to say to you, a genius
i love your teaching and how to repair loptop
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
Great Sir ....big fan of you
You are an Electronics Spartan believe me ... UA-cam needs to do that "Robot test" thing on you
What would you have done in his place?
why not replace that diode
thanks :) very nice video
Can you please tell me how i can recognize if those "broken" pins are useless or not ? how i will find where they going ?
i.imgur.com/mDt8VQI.jpg
If you know which IC goes there you can check it by the datasheet of the IC. It probably says NC - like not connected. But looking only the board i am quite sure those pins that ripped off are NC. The left one for sure, right one most probably, but the photo quality is not that good to be completely sure.
where are you located?
From Last week I Found Your channel on UA-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 👌
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.
thank you man good work