Steps to diagnose a dead phone, switching power supply behaviour

[@Superfandangoo]

Sorin where are uuuuuuuuuuuuuuuuu? 😤 No more holidays until next year!!!! 👍

[@Dr.muthanna]

Nice and interesting video Thank you sorin

[@Martin-ot7xj]

It was very useful and interesting video. Please upload more like this video. Thnx

[@adrianpabloalvarez2523]

Nice work!

[@johnmanning1006]

can you tell us about the wire people hook to there wrist, so they get no shock? thank you

[@sadsea4285]

sorin ...unde esti? esti bine ? i hope so ....we are waiting your new video ...

[@tehnics-optics4560]

Hello, I have iphone 11.My iPhone won't turn on. What is happening with my phone, what is the problem. How much does this repair cost?

[@MrRvdbeek]

Thanks Sorin, And dont play to much🤪 i will try to do this with the iPhone and learn to fix it by myself.

[@josephbrennan4622]

That was the best explained video I have watched for a good while, thank you Sir.

[@marcobohorquez4711]

Thanks Sr. Are you from this planet ? LOL 😅you fix everything.....amazing!!!

[@corel965]

Our KING thank you for all best teacher on KZbin !!! I have question do you believe that contact spray do the job is it god to use in electronics or is just to get money from us ?

[@alikhalid76dxb]

COREL contact cleaner if u r referring does clean the contacts by removing carbon and grease etc. If u meant some thing else then m sorry. Regards

[@corel965]

Ali Adnan Khalid well someone say its good someone says its waste of money im using it when cleaning connectors for me its helpful stuff maybe Sorin have some more info about it thanx for reply man have a nice day :)

[@meednice8647]

I was watching ur practical videos for long time and hhh im still . Trust me u are the best in those stuff on KZbin . .keep goin . Could u add a camera for the display of hot air !!! And thanks for all

[@corel965]

But if you remove that cap what can go wrong ? Why is that cap there and phone can work without it ?

[@XLR8RRICK]

There are more than 1 cap in parallel so the others will do the job.

[@corel965]

XLR8RRICK Hudson Thank you for reply so others wont be overloaded or something like that ?

[@sydmichel]

No, you're thinking or diodes the capacitive reactance in Ohms of 2 caps in parallel is similar to 2 resisstors in series.

[@corel965]

sydmichel Thank you for reply mate :)

[@corel965]

@shay pain no as you can see he didn't replace it just remove it so im wondering the same but others are explain see reply from other have a nice day man !

[@the_game]

Damn you're good! 👍 That's what many years of experience brings to the table. Awesome!

[@zx8401ztv]

Good, another customer happy :-D Most switchmode supplys are pretty good at shutting down if shorted out. Laptop bricks are so common for cable and plug shorts. They also have bad output smoothing capacitors. I've watched Jessa jones/Louis rossmann and other repairers for a long time, the smd capacitors are a bloody pain for shorting out.

[@GregM]

Ya those three caps are known to short and can take out the backlight driver and the diode in some cases

[@db1236]

Is there any risk in damaging additional parts when powering the (shorted) phone with 5V 2A?

[@SidTheGeek]

i have an Huawei Y5ii and galaxy core prime dead with short motherboard. any hope?

[@bellslinki]

Yeah open up phone plug in power supply and see what is heating up on the board.

[@martindowney7915]

Nice work sorin, that note about watching the current on a continuous resetting smps is a good technique in fault finding diagnosis.

[@chrismac4441]

Hi, I'm a complete beginner. How are you measuring the current? Is the USB cable hooked up to both a power supply and to a multimeter? Can you buy a banana clip to USB cable for this?

[@jojotorres8372]

I like it the way of your repair, and I like your gadgets for repair. I'm a repair man also....:-) fr d Philippines..

[@kimspeller6941]

good to see the zippo petrol win again ! :)

[@ckmalcokm3699]

Do you recommend brute force for repairing any phones?

[@electronicsrepairschool]

Ck Malcokm of course not, only on the shorted once

[@geojor]

Mr Sorin, we need more NEW VIDEOS from you, come on get with it, are you asleep ? …

[@precioushoody]

Please do you have any private class 😢

[@Imrranist]

Hey! Great comedian Sorin, where are you? I have seen 320 Videos of yours. Please, I need more.

[@jonj2297]

How much would you charge to repair a (Nintendo Switch console) water damaged board please I can send pics if you have a rough price please

[@hassanjafary6432]

Sir please bring your camera closer when check mobile components thanks.

[@ace_aurel]

Hello Master Sorin im your big fan, can I use 99.9% isopropyl instead of petrol?

[@hairulole]

Hello Mr Sorin, im interested about repairing laptop motherboard. At my place there are eletronic repair class and laptop motherboard repair class. In your opinion , which one should i register?

[@SahilSahil-ul9gp]

thanks nice video plz kindly make a video for how to read/trace laptop motherboard schematic step by step thanks in advance.

[@The_Real_Chris_Topher]

Thanks for the video! How how do you know which caps are safe to just flick off and which ones have to be replaced??

[@GrM1994]

myMobileCellution, as he shown in the video, a shorted cap is heating up. The petrol is evaporating when this happens. You will need a microscope or a magnifying lens

[@pawelnowak9400]

GrM Mihai I think he meant not just that situation, but what is the rule, when you know a cap is heating and you know which one, but question is can it be remove, or it is important one, and need to be replaced.

[@The_Real_Chris_Topher]

Yes, exactly. Can you just remove any bad cap and leave it off or are certain caps required for the device to function properly.

[@knightwar3]

Some usb meters charging stations i think mechanic models won't turn on if they detect a short it's nice to see amp reading of a shorted device on usb meter, thank you so much

[@wisher21uk]

You are the best Sorin very well explained and another fix out the door 10/10

[@mitsos1461]

Dear MASTER, we really missed your deep knowledge, experience and capability on video. With all respect, Please come back....

[@NexoFire]

mitsos greek yes please come back

[@ayla-sp2ei]

where are you man

[@electronicsrepairschool]

محمد محمد holiday :)

[@benwrong6855]

hi, what sort of microscope do you use? thanks for all the content!!!

[@TrashWoodshop]

Is just me or im addicted to this channell :) keep the good work make sure to make more videos love your content.

[@sdqsdq6274]

what brand vape u using ?

[@computerartsdeurne6023]

Are you going to replace this cap? Which one is it? What does it?

[@ezzi487]

I needed help on how to diagnose water damaged iPhone 7 logic board

[@josephcauchi5371]

What happened are you stopping of doing videos here on utube

[@johnf3278]

How can it work without the capacitor? ??

[@JoseLozanoV]

i wonder myself too

[@mitsos1461]

WE WANT MORE WE WANT MORE WE WANT MORE WE WANT MORE :-) :-) :-)

[@omaridouchibane9891]

hi sir Is there a way to disable icloud iphone

[@joeydalit9377]

Sir you are using the Zippo lighter fluid?

[@libo2447]

Sorin???Where are you???We want to learn please.😁

[@cerbulcarpatin4830]

Salve Sorin, o-ntrebare, in ce parte a UK-ului esti?

[@RichardMoment]

Thanks for that update, great job don

[@Imrranist]

Hi! Mr. Sorin, are you alive or dead? Your wife is doing videos but you aren't? Why?

[@rosenrosen8465]

Hi. Can you please give me a link for her channel. Thanks .

[@cauffy]

Sorin where are you, i miss your videos? where is your shop?

[@aminhbr]

Hi sir, I am an electronics student and in my university they do not teach us pratical things like repairing ... so when I watch your videos I understand what you say and do but when I try it by myself I cannot because I do not know where to start in the motherboard I've never tried to fix one, so I ask you please if you could do a video to show step by step where to start and why ? how do you jump from a place to another and if you can use the datasheet one time for a beginner because on the board it is hard to trace the circuit diagram. And I have a question : I do not understand when and why use a powersupply ? how do you know that there is a short by reading the amps ? If there is any Link, Books anything that could help I will be very gratefull. Thank you for your help sir!

[@midodido1941]

you good man

[@kamalgevariya5409]

Hi, I have one problem. My HP laptop is dead. But 19V power rail is not shorted. When I connect my laptop charger light doesn’t glow. Can you help me? Second MOSFET after power shows output of 24VDC. There is only one IC which heats up, it is near Battery charging port.

[@kamalgevariya5409]

Can you ping me on my gmail id? [e-mail]

[@musiclib4064]

You dont replace the cap with new one ? or its not needed ?

[@jogeTV827]

can i know what petrol do you use?

[@marloweyordan4089]

sir where can we buy the usb power meter same as yours ?

[@sudheerm.s6792]

why no videos in these days..

[@electronicsrepairschool]

Sudheer M.S holiday :)

[@Amraks]

Was getting a bit worried enjoy your holiday.

[@laboratorioassembler]

we are waiting for you Sorin! ( in Italy ) :)

[@wisher21uk]

Come back we miss you Sorrin

[@alhagopian2100]

Whats going on no new videos????????

[@shaikhmuhammadanas6295]

Please share some bios issues .......

[@markgilrobiso753]

How can you fix the. Cpu mother board. The power suppliy os ok. And the 12v 4pins. When you plug the 4pins it not spinning. When you unplug the 4pins it turn on the fans in the processor fan. Thanks

[@rickritzma4667]

He goodmorning Sir, Wow i realy admire how you go by steps to find the problem. I have also a problem with my laptop and i started watching with the meaning that i can maybe fix mine. You had a video about a Dell XPS wich goes on and off. Well the graphics is not the problem for me. i posted my problem on some forum's but not much. Im out of ideas. So i thought maybe your reconize my problem and i know its hard to diagnose from a text. But maybe some tips where to look for?? I have a Acer Aspire 7540G and the problem is that when a put the power brick in no charger ligts comming on Same without the battery. When i push the power button on the laptop its goes on and off after 2 seconds (same as the Dell XPS) But when i hold the power button down it stay on untill i release the button and goes off.. Also RAM is not the issue i tryed without battery i tryed all the same. But i found it strange that the power brick lights on the motherboard dont come on they dont get any voltage. But when i push the power button it has power.. The charger gives a 19V output. Maybe you reconize it or have some tips for looking. Anyway Thanks for reading have a good day and keep it up your realy good at it.:)

[@118Wilson]

Another good video. Quick question, do you know why a phone would be consuming power from DCPS when the phone is off and not been prompted to boot. Phone is consuming 0.002 A

[@jhay-arpamplina2710]

this a realy big help for me who wants to level up the skill on hardware and diagnossing peoblem on cellphone repairing, not only this video all of your segment, salute to you sir.. 110% recommended to watch this for all electronics tech specially me a cellphone tech beginner, approved👍👍👍👌

[@pettahprize6114]

Specially remind viewers when we remove screws we have to mark where is long screw ... We must replace long screw correct place , If forget it The result is ... Looooooong screw damage ..... Very difficult to repair long screw damage ...

[@sydmichel]

Hey Sorin, lots of comments asking where you are. If you are reading your comments, just let us know that you are OK and not been run over by a bus or anything. We are all your family now.

[@electronicsrepairschool]

Hi, of course a read the comments. I’m on holiday atm, i will be back in September :)

[@MrRvdbeek]

Happy to hear from you sorin. We wil be there in september 👍🏻happy holydays

[@mohamedwaellabidi3780]

petrol must be fresh

[@ahmadissa8607]

Hi Sorin, Man where are you, longtime no seen, hope you doing fine don't stay out there for long, Waiting You ..... :)

[@sanderwalberg9026]

Dear sir Electronics are my hobby, I was belssed by stumbling across your Chanel, do you accept external jobs ? In short how much would it cost me to send you a motherboard and to have a video of you trying to fix it, can't wait to hear from you

[@emmanuelsunday1259]

Thank you for starting this channel. Please how do i know your first video because I'm a newbie to component level repairs perhaps may be you explained where to start troubleshooting a circuit board from and how to proceed from there?

[@saminajjar5767]

Thank you for everything you do. But can you please make a video about North Bridge fault in any laptop or a laptop that has a 3.3 V for a second or two then gone. Thank you in Advance.

[@irishguy200007]

Where is Sorin. Its typical just when youtube starts hosting someone worthwhile he dissappers on us.

[@TheOmerjaan]

channel is over ?

[@HARIHARAN-lm4db]

Sir in my mother board almost many capacitor is shorted Lenovo g50 - 30 please any idea ..

[@abeleski]

I enjoy your videos and have started watching them all since your first one. I wish you would number your videos though. It would make it much easier to find what I have watched and to find the next video. youtube does not make it easy. Thanks again. Great channel and thanks for sharing your knowledge.

[@computersrepaircotesaint-l7407]

I've been in electronic for 25 years, man you keep surprising me with your knowledge. Thanks for this great video by the way we are missing you

[@ahmadwmuhamad9205]

Please continue

[@xose1984]

hello Sorin, we need to see where you touch the probs from multimeter and power supply under the microscope, i can't understand what do you check first i can not see the component, another good video as always

[@afsershaik5134]

Accurate way to diagnose,,, good job sir✌👍👍

[@hany1843]

you are the best

[@electronic7979]

Excellent video

[@sikandarnoori1979]

come back plz

[@josephcauchi5371]

long time no see

[@assistedpropertysale4629]

Thanks for the tutorials please can you make a video on how to ground yourself or Bond yourself before working on electronic to avoid anti static as well as best place to work on electronics Thank You

[@rayg2317]

is time to make more veejeos! this is my favorite channel sorin....please do more videos...thanks!

[@mitulmac1841]

Hi sir, I send you a message at discordapp and also your gmail. can you plz have a look

[@otanphuc5708]

Great teacher ! Please make a lot video about iphone repair . Many thanks !

[@appiahishmael5340]

Thank you,it really help me....please can I have your contact

[@appiahishmael5340]

Thank you,it really help me....please can I have your contact

[@abeleski]

YEAH WHATS HAPPENING? tHIS WAS MY FAVOURITE CHANNEL. i HOPE HE IS OK

[@geoepi321975]

same friday yeah

[@reynaldofigueroa7881]

Hello Mr sorin I hope you are doing fine. I learned a lot with your videos. See you

[@muhaahaloa941]

Good Job :__:

[@rezonite]

God ur good

[@rupammobile8884]

Simple but effective trick ( petrol) ... Thanks

[@cambycrafts-yt8275]

Thanks, another video full of helpful info for me to try and remember. Oh! and great to see you back....lol

[@ezeetech1103]

Thank u sir i understand all things. Sir can i get your email adress i want to talk u ...

[@NexusTracks]

Please can you give me your company's name so I can get you guys to repair my iPhone please

[@augustinenworie1365]

Sir can you pls explain the parts of phones PCB as you did on laptop

[@RkTechTelugu]

Sir what happens, upload more videos.