Hp 15-ab254sa laptop water damaged - Laptops power input circuit
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- Опубліковано 29 сер 2024
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Sorin is like Morpheus. "I'm only trying to free your mind Neo." "Some rules can be bent, others can be broken"
I turn 75 Christmas day i’ve been watching your videos for years and I think you are a magician I look forward for your videos. Thank you
First MOSFET is P-channel not N-channel, and not connected to ACDRV. "Works" (inefficiently) regardless of Vgs because body diode is forward-biased so current can still flow.
you are right
Yes , the first is p-channel and that`s why the gates were not connected together
true..
indeed
If it is a P-channel why did it work when he put 25V on the gate?
that is very crazy what they did there, indeed first mosfet is P-ch TPCC8131 and second mosfet is N-ch model AP0203GMT.. So connecting the gate of first mosfet to 25V is closing the mosfet . Current goes via internal diode.
or maybe i am missing something.. i don't understand what they did there.
Sorin magic smoke, the track to first mosfet gate was dragging the voltage down ,before you disconnect it, allow the proper calibrated wire to supply the 25v to gate got it regards Jim
I am a new beginner and i follow your videos and work a lot sometimes i get confused though, I have a long way to go
Ve been following for 7years
You are extremely good, professional and dedicated to what you are doing. Thanks for all the lessons provided🥰. Please in the future show videos also for other eletronics more complex maybe not only laptops.
The pin to the first gate was probably semi-shorted. That would explain the huge voltage drop when you connected the gates together. I would have applied some current first and see what's getting hot before applying 25V on the gate (and it's driver IC). Good job :)
No.. 1 N-type and 1 P- type. Bad move with jumper wire
Yep! There are capacitors on the gates of those two mosfets. Looks like due to the water damage capacitor connected to the gate of the first mosfet was partially shorted. Smoke that Sorin fell after applying 25 volts to the gate was most likely coming from that partially shorted capacitor.
@@laptopDoctorKZN According to schematics, both input mosfets are N-type and both gates are driven by the BQ chip.
Something blown up 100%😂. Merry Christmas Sorin for all Your Family !
he is genius . 5 years I'm watching and he alway surprise me
Quite impressive how you kept focus on that circuit and not get distracted with the smoke or the semi-short. I followed you well on this one. Just getting rid of the faulty track from the operating circuit was genius. Great repair boss. Merry Christmas if you do not stream 🙂
Do you wish to know more about motherboard and get free tips
Just received my Sorin Rosin yesterday. Looking forward to fixing some nice laptops with it. Thank you from the U.S.
Maybe you should watch few older video from some smart Romanian guy, I think his name is Sorin. He often told us that input circuit can be combination of pnp-npn mosfets :))
Aaah man. This is more comical then any Netflix movie… love to see how he always find work-arounds. And once in a while you see some smoke and arks. Keep uploading please!!!! Thanks.
You are doing a great job!, Merry christmass and Assalam-o-Alaikum to you my brother-I am from Pakistan
When whatchi g your videos, i look for one
words,,,,"perfect"😢
Seasons Greeting to you and yours, May you find Peace, Thank you
This is the best gift you could give us before Christmas! Merry Christmas to you and your entire Sorin family!! 😃
Great video and a working fix. But this is also a reason why no one wants to work on a laptop that was worked on by someone else before. I think Sorin said it too some day :)) We are dealing with same issue in software development. Some devs think about next guy and spend extra time "removing circuits" he just disconnected or at least leaving a comment. Others just throw some magic and go home. There is a limit how many times you can do this until codebase is no longer maintainable. Anyway it's an old laptop that will unlikely see another repair. So it's acceptable as last job. Nice Christmas for all of you!
Do you wish to know more about motherboard and get free tips
Nice video. Thanks very much. I am always searching your videos
🙏🙏🙏
Nice one, thanks for the amazing video Sorin
i cant believe it worked we have picture hahahaha😆😆😆
That's crazy
Thank you so much for the lesson, Sorin! Merry Christmas to you and your family! Cheers!
thx for sharing Mr SORIN
Nice work I want to come over
i would connect the beeping mode and do a quick search in the area, this track will not go far away... most likely the damaged component was near the bq chip... maybe the track just shortly bridged some other tracks and appear again some mm near.
Thank you for the experience. I received good knowledge from you. (Good job)
Do you wish to know more about motherboard and get free tips
Sorin you are a genius
Nice information thank you 😊❤😄😃👍👍
la mulți ani Sorin...revelion fericit...
nothing can beat a properly calibrated wire
As usual, perfect job
How many times a day should a motherboard be brushed?
Only twice a day, be certain to floss between the caps and only change the thermal paste on the second Tuesday of the week. I think that would do it. 😁🍻
Thank you Mr Sorin
Yes I can spot something very wrong with that laptop Sorin. A mechanical HDD! xD Merry X-mas for u and your close ones. And congrats for your great work :) José
The king❤❤❤
no matter how u fixed it..but it was thrilling..
Luv this kind of repair 🤣 , Merry Christmas!
usually I am lucky with laptops at work that had water or something else spilled on it. I can usually just clean it with alcohol and leave it to dry for a few days. often I do have to replace the keyboard. but at work we also have HP Probook not Pavilion...
Happy Christmas to you and yours
Good job mate 👍
That was genius work. ❤
veeery nice laptop
Excellent!, Never would have thought a gate could have a bad joint and i definitely thought i heard a pop at 19:54 also when you seen smoke,
I think it the tip of the multimeter test probe that it slipped from the test point
He did put 25V back into the circut with his PSU, thinking that did the pop, not sure how the tunneling affected it though
@Dohcom1 zoom at the video and you will see its a coincidence that it happened when he put the 25v you can clearly see it slip off
@@jaraalbert Hi, Thats not a multimeter test probe, it a PSU probe at 25V, He couldnt have shorted across the board unless he went other way, and he never slips!
@Dohcom1 Well let me tell you that they are multimeter probes but connected to a power supply i have been watching Sorin for years back when he worked at the mall and he also showed his new home setup when he started at home
25Vgs on the first mosfet is beyond absolute maximum ratings of that transistor. So that transistor is probably dead now.
When you apply voltage on the gate 25v Vgs shouldn''t it be 6v. Or from ground 25v
yeah he put 25v vgs instead of 6. no wonder something smoked
Good job done
10:08 I do believe in Christmas as Soren also, speaks of wonderful present....and where lesson's are a huge gift to a place as master to student. Thank you Soren, for teaching me methods. M.
Sorin you are awesome
The liquid damage looks like it’s from pool water.
Doesn’t a P channel mosfet allow flow from drain to source until a voltage is applied to the gate ?
Sorin,could you please make some things clear at all.. Like : power L, LDO POWER
.. you've used it at laptops and mobiles phones? ❤
Hello, so we are back
I am surprised that you did not pull out the thermal camera? I was thinking about what you did right from the beginning but was not sure if it was the right thing to do. anyways thanks for the video.
would take too long 🙂
Master Sorin.....you didn't blow up some component but my mind....phew....😮
What about those two capacitors alongside the first MOSFET, couldn't it be those partially shorted?
Great job 🎉🎉🎉
Hello🤝we go beyond the box✌great educational material👍👍👍👍👍👏👏👏👏👋👋👋👋
Nice one❤❤❤ happy new year
Sorin: How we can fix the problem?
Sorin + Me: A proper calibrated wiiireee!! 😂😂
Santa Sorin and his Christmas elves strike again! 🛠🤩
I've not seen you using lighter fuel as a cleaning agent for some time - did something go wrong? or was it not an efficient cleaner? (i bought some petrol to use simply because i had watched you use it)
Haha, I wondered this a while ago, myself. Oil-based is generally not good for electronics so perhaps he decided to shy away from becoming an advocate to others' mistakes. I use it on thermal paste but thoroughly clean it with IPA afterwards.
If I remember correctly, he stopped using the lighter fluid after he bought the thermal camera, he was using it to find hot components on the board. For cleaning i always remember him using isopropyl alcohol (isopropanol)
the first MOSFET is P channel not n low voltage on gate
Wait... didn't you have to inject only 6V?
Or 25v from ground of laptop, plus to gate, but not source -gate?
Please make more repair videos.
Manufacturers aren't really caring about customers.. so why would be bother caring about them either... let's make our own schematic! PERFECT!
Very detailed operation, thank you for sharing, if you are interested in repair tools, please contact me.
nice
i didn't understand the caption did he use isopropyl alcohol or ethyl?
hahahaaaaa this is not dodgy, this is the next level 🤣. a real perfect repair
Thanks!!!!!!!
Tovarasu Sorin......nu faci altceva decat sa incerci sa fii electronistul care iti punea un fir intre PL500 si o rezistenta si mai avea televizorul pentru o luna sau doua.....siop in din astea.Scuze pentru comentariu
20.23.. double mofet popped. Can see the hole
10.59... second bq chip. Where is it.. im confused.😮
Good !!!
I understand the finding your own way. But the thing is you should have at least tried. Because we know you have a thermal Camera. Good job nonetheless
That was a good BREXIT Video.
Will it be helpful to use tooth paste. Love from Alberta, Canada.
Merry Christmas to you and your family. Question, was wondering what size (proper calibraded) wire did you use. If you leave a link I'll purchase it. Thanks for being you and enjoy the holidays.
F “calibrated wire” don’t be lazy and use the correct parts
@@MrPnew1 So you've never broken a pad or had to fix a trace on a board? I've been soldering going on forty years now. Although up until recently I started getting more into micro soldering or smd work. I recently purchased a microscope and hot an air station to add to my bench. People can agree or disagree on whatever, although there are times where you need to jump something either temporary or permanently, that's just the way it is.
@@marksplaceagreed, but it’s bad practice to use jumper wire to bypass fuses, coils and mosfets. I never suggested not using jumper wires for trace repair.
@@MrPnew1 Sorin mentioned many times he only does that temporarily to see if the said component is indeed faulty to save time. He does replace the components later (either has to order or looks for one on donor boards)
@MrPnew1 I ended up buying some 30awg wire as it seemed like a nice size for small circuits.
That's when I got a little curious as to what it would take to burn it up. I ended it with 5v and 5amps and the wire didn't even get warm after leaving it sit there for upwards of a minute. I didn't want to stress out my power supply any longer knowing that any more than that is basically useless anyways as a make-ship fuse. I'm going to try and find the smallest wire I can and repeat the test. If one could use some small wire as a fuse it wouldn't be a bad thing if that's all you had at the moment.
Although I think I'll also be searching for a kit of various size fuses to keep on hand as that would be the better choice. IMO
To chicago where you work and learn from you
... those notorious dy laptops!... whew! :)
The 6 pin ic blow up
can i just lift the gate pin so i dont have to cut the track
SORIN.!!!.Fet1. N CHANNEL... Fet 2 P CHANNEL.. how can u connect the gates of the 2 fets. Both have different requirements.
Am i the only person to notice this!.
8131... N-Type
Ap0203GMT P-type
A certain inevitability about "proper calibrated wire"
15:14 Cos' is not properly calibrated!!!LOL!!
One mosfet override
I know exactly what you are meaning....
Proper calibrated fuse 😂
Până la urmă alcolul rezolvă toate problemele ca si în viață 😂😂😂 trebuie o resetare😂😂😂
But wait... What happend with the candy from the last video?
😆😆😆
I macbooks this trick will not work, there is a protection againt this
❤️
a proper calibrated wire the most valuable thing in a repair shop hhh
hey this is dodgy on steroid he he, you are early with the fireworks, there are still a few days left! 💥😀
You've applied 25V with respect to what?? LOL
🎄
😊😊👍👍👍👍
Seems like you get a lot of business from local repair shops
You know your job. A lot of shi!!y work.