Acer N161P1 laptop repair - How a shorted capacitor job get complicated

[@norta_gaming9035]

Unbelievable, just a week ago I had exactly the same problem, it was an ACER NITRO 5, the capacitor was short and I immediately removed it and the laptop worked, but the problem occurred when I turned on the charger, the light just flickered and it wouldn't start with charging but I was confused as to how it wants to charge with the power supply, I even asked a question on Discord and posted a video and pictures but no one helped me, in the end I was helped by my thermal camera which showed the first mosfet which was short , I replaced the duck and everything works perfectly :))

[@florinese78]

Again the duck 🤣🤣🤣

[@codjuice6113]

I had the same problem with acer predator Helios 300, but the capacitor got burnet and exploded and was obvious... I changed it and changed the power MOSFET too.. is it fine or I shouldn't have replaced the burnet capacitor? I don't want to face the problem again.

[@joseph_donovan]

Sorin, the more obtuse the problem, the more you use your singular ingenuity, the more we learn from your masterful, magical and magnificent mind! Love it! Thank you!

[@FelixImranMasakasa]

It felt awkward the time the capacitor was removed and it drove me crazy to see it with still a short, but I've learned a great lesson as well to be patient and dig more. Big up to you.

[@ShR33k]

@@andrew_koala2974 Stop being a cock.

[@FelixImranMasakasa]

@@andrew_koala2974 all the same bro, I'm not here to learn grammar or to be an orator. As long as u understand what I meant no worries. But thank you for your help anyway

[@electronicrepairservice2020]

Wow, this was a sanity test, for a second I was thinking there was something going on with the battery. Another great lesson, thank you !

[@argee99]

Sorin is the 'Columbo' of electronic repair. Excellent as always, thanks for the video...

[@josepeixoto3384]

hmmm... Columbo films were made in REVERSE; as MOST are!!! the solution first,then construct a movie to end there; is that how this videomaker works? nahhhh..

[@meblake7359]

Excellent demonstration of the logical process of diagnosis.

[@teknerds]

I have a repair job that brought me back to school. It's an Acer N17C4 laptop with no fans! Yes it came to me like that and I thought that there was a short somewhere causing it to switch on briefly and off on its own again. I lined up possible causes to BIOS temp settings, which I couldn't find as they aren't there for it, so I'd feel the CPU with the back of my fingers to try and determine if it could be heating. It barely would get warm before power cutting off. Other symptoms are difficulty turning it on, even though it has the orange light for the charger, the blue light would only come on after bashing the keyboard. So while watching this video, at the part where you suspected it could be anything like the touchpad or keyboard that could have a short, I quickly figured that the keyboard's on button is stuck on always depressed, even though the key itself bumps up after pressing it. The minus key seemeed to be the new ON/OFF button, and I suspect some liquid damage to the keyboard. So I'd switch it on and quickly yank out the loose keyboard cable and it stayed on... problem solved. So I'm relieved it's just a faulty keyboard for my client.. You do have excelent troubleshooting skills going over each section and module carefully.

[@TheElectronicDilettante]

It’s one of the most satisfying feelings to find the fault through all the nonsense and end with a working device. Nice work. I’m glad to see a variation of the “smoke method” to find shorts is still around just without the smoke.

[@SiETechNotebookReparatur]

Times are changing, a mosfet is not just a wire anymore :)

[@deleanuandrei9612]

Muahahaha😂😂😂😂

[@asv5769]

Maybe laptops are changing. Few years ago, standard Sorin’s repair was to bypass Mosfet with a wire. Nowdays this is out of question. So I wonder if it really worked back then, or maybe there were issues not tested like battery not charging etc.

[@spiritseer001]

Nah, i think it is shorting the gate of the mosfet.Maybe it is still ok to be dodgy sometimes by replacing it with a wire if it is open. 😂

[@markkay8117]

@@spiritseer001 100%, I also believe gate of the mosfet was shorted.

[@Hadadoh]

You have good videos but I don't understand the language. Keep up the good work

[@rongray8934]

Nice job. Keep digging. You provide an excellent presentation on your videos. So enjoyable and easy to follow your explanations.

[@wrlccywrlfh]

nice video, I learned from this

[@hahnsolo7241]

Your vids are the interesting ones on hole youtube, as a beginner i learn a lot from you! Many Thanks from Germany

[@laboratorioassembler]

Sorin :) i have "modded" every my multimeter ( also my car seat belts alarm ) to reduce the beep for live streaming :) just place a little bit of hot glue on the buzzers.

[@laboratorioassembler]

Or can be a nice thing if sorin can create a circuit to "lower" the frequency of the beep .. or to control a small relay.. to drive a red lamp ( that can be nice on live streaming )

[@HugforYou]

That was hard, but not too hard for Sorin! Great as always! ☺

[@allankartin]

Your dialog Are exelenet informativ, Thank you !

[@jovanlearn9332]

Too funny, too educative , informative ,. Am too thankful 👍👍

[@markkay8117]

:) Yes Sorin, Please remove all capacitors as a precautionary measure! :) . No capacitors, no problems! :)

[@fusca14tube]

Hi Sorin! Awesome technique to discover the MOSFET type. Could you please make a video explaining this? Thanks!

[@Arvidje]

look at the number a n-channel always has e even number at the end.. P-channel has uneven number..

[@SiETechNotebookReparatur]

@@Arvidje not always, but mostly... e.g. see MDU1513 :)

[@charanebot6423]

​@@SiETechNotebookReparaturThat's right. Not always, I also discovered that there are exceptions.

[@samuelonaolapo2812]

Sorin, you are the best

[@eldjoesther643]

The genius teacher 🎉🎉.

[@DrivenDIYer]

Good Job, every sunday enjoing your Videos. Keep on. Have a nice day Sorine.

[@JAngelaCarter]

Rock-On. Thank You! Big help

[@MrRvdbeek]

A nice repair And I learn a Lott again thanks

[@florinese78]

Great video,,,if it's looking like a duck it is probably a duck,,,love that part

[@theothergameygamer]

Nice puzzle solution

[@diyfixtool830]

Very good video, learned a lot of useful things

[@leetucker9938]

this is a nice laptop

[@AKhan-nu9mw]

Thanx you very much, Sir.

[@5bobmorris634]

Sorine please help me i want to further up myself in in repairing expecialy IC WORK AND HOW TO be able to find fault and solve complicated problemes

[@miroslavstevic2036]

24:30 "I don't understand ... I am dodgy?". Guilty as charged!

[@remypaternoster6627]

As usual, great video... Thanks!

[@walterwhite9094]

This is not a gap between two solder points. This is an invisible calibrated capacitor.

[@Franklinveterinarycenter1of4]

Man, you are awesome!!!!

[@feldwebel7734]

Tonight's Episode: "Karma Of The Capacitors"....................

[@dannechita8577]

how you know if is a chanel n or chanel p mosfet?

[@CRSolarice]

So that is a filtering capacitor? It looks like you left it off and didn't replace it? That leaves the job to the other capacitor? Or did you replace it after all? Just curious. Thanks....

[@Electronics_Repair_NZ]

very good

[@carlosgohn8659]

Sorin scissorhands

[@Arvidje]

to found a n-channel mosfet easy, look at the number is always a even number at the end.. P-channel has uneven number..

[@GIT-COMMS]

@Sorin, please how were you able to test for channel N mosfet using the multimeter ? Nice work as always

[@danielgonzalez2582]

12:10 a classic nowadays

[@jaweedshahmarov3749]

No capacitor, no shorted capacitor

[@abnhainn7944]

Supper Danke

[@Bruk55sem]

Sir thank you for your incredible vedios. But when you found a 0 volt on the output side of a mosfet you just short it but also at the same time when there is a shorted mosfet the laptop stop working. Why is it the solution for one laptop becomes a problem to the other? And what is the concept behind it? THANK YOU FROM ETHIOPIA, AFRICA

[@petervoros8221]

So it was a duck!😂

[@electronicsrepairschool]

Definitely!

[@cowboy6591]

One bad part can trigger a gaggle of parts damage, however rare. That USB bus is notorious for problems. And who knows what consequences can be had by running it without that capacitor.

[@hussamabumezar595]

man u are a fucking legend !!

[@jcl7236]

hi, how do you place the mosfet at the right place N or P channel?for example in the video when you recover 1 mosfet, you turned the mosfet to put it in the right direction. do you have a foolproof tip?

[@djtongi]

the Karma of the not-replaced capacitors will follow you forever!

[@FakeJake808]

Sorin the G. O. A. T.

[@ronlevin2339]

in MacBook's each model has a different chip variations and cannot be changed to another version

[@CraZyButRich]

Wow way better when u r in the mood 😂

[@NevilleWilliam-b9k]

Whats the name of the tool you use to heat up the capacitor?

[@bogdanmustata5310]

Mi-a plăcut foarte mult episodul ăsta. Exact ca un film ..cu mult suspans. Noroc de la Iași.

[@haniyasin3650]

I have an Acer Extensa 15 (FH5AT LA-K093P board), it starts normally and boots to windows, then after a while either a black screen or a small square scrambles color line appears , i tried when reaches this state to hook it to an external monitor but nothing and the laptop seems dead , then i turn off and start again the issue reappears there is no specific time to when this happens after booting , i tried to monitor the CPU temperature but its normal , it seems something breaks after a while and then fixes itself then breaks again i doubt of electrolyte capacitors might behave like this but cant figure if it is a capacitor or something else , did you face similar issue or have a guess where to look?

[@rafaelgorospe1484]

I have a laptop every 30 minutes turns off what will be the reason why it happen, can you show something like my problem

[@iocobora4633]

Hello, can you help me with an advice, I have an msi laptop that has a good fan but it does not receive power more than 3.5 volts, it has a red yellow and black wire and because it does not cool down, the laptop turns off as if it does not feel the temperature the processor to receive more voltage, the fan is 12 v, do you have an opinion, what could it be? Please help me, I'm also a debugger but not as skilled as you

[@abderrahmanebourou9471]

Do you have laptop maintenance course?

[@MadMatty72]

Ceramic capacitors fail a lot, on one of your own devices, would you ever replace a ceramic capacitor with another type that has a more favorable failure mode ?

[@kashi658]

Nice

[@pajdko8382]

😂😂😂 do we need a capacitor nah nah 😂

[@leetucker9938]

please publish list of these repair shops so i can avoid them

[@lovejoymakhaza5229]

Hi sir Sorin and everyone. can you please share, i am a beginner in repairing laptops, I am having a challenge in checking faults especially on laptops that uses type C chargers the voltages i find 4v 1v its kinda confusing to me. and on Vcore

[@riyatnoyatno7680]

Mr you must try change resistor very smal

[@user.fedorman]

Part 2: when you replace the shorted capacitor 😂

[@riyatnoyatno7680]

I try but this work/easy

[@ngwanindi]

I worked on a laptop today and the power button had 19v when you press it goes to zero. What could be happening here?

[@GlishaSo]

maybe battery got empty fast until you assembled everything : edit i think its actualy not charging battery if its too low and it gone too low for just that few seconds which you charge it. looks like its problem with charging battery :O or maybe battery is dead. this is all comments in watching video not to the end just commentating :) hehe

[@klebessantos6727]

muito bom

[@muharrembaskaya7125]

What would happen if you shorted broken mosfet ( drain and source) instead of replacing it with a new one ?

[@georgeprout42]

Best case: nothing Worst case: an overvoltage fault develops on a low voltage rail and the controller now cannot disconnect the incoming supply. Result: the board and processor get fried as 19V goes into the 5/3.3/1.8/whatever rails. It's ok for short term troubleshooting, but is by no means a permanent fix.

[@danieljenei2609]

De ce a murit mosfet-ul din senin? Inițial era doar capacitorul problema, dar apoi a cedat si mosfet-ul...am pățit si eu la un controller de trotinetă, exact același lucru

[@secaymal]

we have picture should be on a shirt

[@mouncleispronameAchrafyemlahi]

cool

[@gsmzed2479]

I have Hp 350 G2- 19v is OK and 3.3 v, now the issue is it used to power on only when there is a battery, without a battery no matter how hard you press the power button 🔳 it can't power, after that, it started charging itself,and it powers on itself the moment you insert a batrrey and a charger. Now it's no longer powering on. Any help?

[@electronicsrepairschool]

forum.sorinelectronics.com/

[@zamrigm229]

how much this case

[@mineua]

I'm sorry, I didn't mean to offend you in any way when I asked about the Mouser. After all, the repair did not work out, so there was no payment for it at all. That repair needed a unique part, isn't the client willing to pay more and get a working laptop back, or save money and get nothing?

[@BrozFix]

I think that "black karma" prank video got payback time :D

[@svetlanavlasova2061]

Two days ago I repaired "hydroponic garden" which did not work. On power supply connector there was sparks. Power supply board of the unit had 2 PWM DC-DC convertors and one chip to control AC pump. To make the story short a DC-DC converter responsible for LED light had a capacitor with impedance of 10 Ohms (it was a tricky one as I did not had power supply without protection). Once the capacitor was replaced the unit came to life.

[@edwilldaames9869]

liked the vid

[@ricks3754]

indeed it was a duck haha nice video!

[@Rodox2k10]

Good video, Sir. I got a question though. Since there was no indicator arrow printed on the board, how did you know the proper orientation of the mosfet?

[@mariaivascu3972]

Ati putea face stand up tehnic ?!

[@roadrunner5772]

du bist ein Fuchs Sorin

[@aliemlek]

👌👌👍👍

[@MrDinakdakan]

50/50 with local repairshop, why they get 50% you supply parts and labor and experience 😢

[@SmartBehaviours]

If looks like a duck, 😆 lol

[@florinese78]

No capacitor no short😂😂😂😂 great

[@Popeyes66]

Evil Genius stikes again !

[@yodaco]

When you get the intermittent situation like this is almost always a failing MOSFET

[@dombarton2483]

Very nice video Sorin.. just a little english lesson. In english we dont say...."what did i told you" we say what did i TELL YOU! That is the correct way of saying it.

[@dogosrobi]

Although you are indeed correct, could you please elaborate on to what extent are you able to hold a conversation in anything rather than your own native language?

[@dombarton2483]

@@dogosrobi English is my native language, but can speak fluent German. So that answers your question. Sorin has taught us many things, so teaching him something is the least we can do. The interrogative sentence is often incorrectly stated by Sorin. I hope he has learnt something today. I try to learn something new everyday as i believe it enriches ones life, so hopefully Sorin feels the same way.

[@easierrogue]

Please do not try to change the way he talks english, it is part of the experience 😉

[@dombarton2483]

@@easierrogue Learning what is correct is the experience.

[@mm0077]

I followed him for years and that is his unique style and identity and I enjoy that very much. I wanted to tell him too but have refrained for many years.

[@stadug]

17:33 the battery started charging without a charger with 1A!

[@stadug]

Ooo, I commented at the time, I see you realized it later, my mistake.

[@humamalrawi1276]

Job done how matter it's , they don't understand.

[@videomaker811]

Some flux maybe can help to remove that mosfet.😂

[@vincentrigby5611]

HELLO why do you not replace the capasitor? .Great fix

[@hairulole]

Its just filter capacitor. Motherboard got more than one

[@rangasibarbar8019]

hi sir, I'm new on ur channel. I'm curious if u ground ur self before touching these components or not especially when touching motherboard or any sensitive hardwares

[@electronicsrepairschool]

no need, i'm fat so i'm like a little ground myself here :D

[@ChrisPavlides]

When you're putting a board back in a situation like this as a technician, there are 2 options. Even you are confident or you are out of ideas if stills doesn't work, which would be the issue. :P Everytime im saying that "Im confident" there is something on the back of my mind that keeps telling me that something should go wrong.

[@mm0077]

Sorin thank you for sharing and what is that screw doing on your microscope at 35:14 LOL

[@Androx74]

NIce video, in the last minutes it remember me that job where that two laptop had the first mosfet shorted and the second one was working fine, remember the laptop start for a few second than is shut itself down, :D

[@noamsapir2366]

40 pound for repair job? OMG I paid 450$ to repair my razer laptop. 😫

[@xRepoUKx]

IIRR the charge was £80 & he got 50% of that; so £40 to Sorin & £40 to the shop the laptop came from.

[@addehashi]

no capacitor no shorted capacitor hahaha