2X Lenovo laptop, screen/picture/backlight repair

[@sheriffmensah9449]

My first time of watching your videos amazed me so much that I couldn't stop watching. Sorin you are the best! Your explanation about fixing laptops problems are always simply and very clear to understand. Thanks for your good work.

[@earthelder2065]

"One Man's junk is another Man's treasure....Watching Sorin work is always a pleasure....." Thanks Sorin !!!

[@klwthe3rd]

This is why Sorin is so good. He shows that most repair shops(colleagues) are no good. They make simple mistakes for which Sorin must fix. Great video.

[@MeFixingEverything]

I don't fully agree with the description saying '' Nothing to learn here, just boring stuff '' 1st Unplug the battery , when changing the screen 2nd Unplug the battery , when changing the screen ,even if you can't see the battery 3th Check all the connectors , before and after the repair 4th Don't thrust the fault description on the repair lable 5th Don't thrust repair shops colleagues 6th Computer to run , you don't always need voltage on all coils (I think you learned this one as well) and I'm sure there is more :) keep doing this we love it ! Boring moment number 1 @ 8:31 boring moment number 2 @ 32:59

[@PS3RatBag98]

I wouldn't recommend thrusting a colleague in any sector to be frank.

[@garyschnur7469]

Sorin, started watching your videos about a month ago, great learning tool. I have done a search but have not found where you did a video repair on a laptop that has backlight but no video. Just started repairing as a hobby after retiring. Love the learning and the challenge.

[@johnzima9505]

You are my hero Sir!Just like my customers, the machine won't go on, is it plugged in, do you have power in the outlet Enjoy the weekend and come back to this later, PLEASE,

[@dormankenneth]

The first Sorin "F" bomb I have heard!! 🤣🤣🤣🤣🤣

[@thingshappen9199]

You can tell he was in a bit of a shock himself after dropping it. 🤣🤣

[@Radek__]

34:12 I will explain this situation for you. Leave the idea that right big coil can be for cpu turbo mode. No it can't be :) Think twice - you can have one, two, three or even 4 phases (rails) in laptop for cpu voltage - it depends of how cpu is powerful (2-4cores, turbo mode, etc), but AFTER all that coils (for cpu) they are merged together. So voltage is the same on all cpu coils. Because turbo mode is NOT activating unused regions (which has to be now supplied by another voltage) BUT it is only multiplier/speed clock increasing. What then is the reason for another or two more coils only for cpu? To relieve/ease (to help) transistor mosfets before coils. They can't handle huge amperage draw so they can be quickly damaged or voltage can become unstable. So engeneers provide two, three, four phases for cpu only and after that coils the voltage is the same (on all cpu coils) and always present. If you stop cpu voltage, then laptop will hangup. So in you case the small coil is for cpu, and second small coil is for chipset. Because as you know this is Intel hybrid bga (cpu+pch+gpu) so it needs at least three coils/voltages (but as I explained above cpu can have extra coil or coils). Ok, lets comeback to that big right coil. As you've said on the beginning -it is the voltage for gpu (vcore). Why it is 0.8V on start and then 0V in Windows with picture on screen? Ask Intel :) I know that it is very strange and abnormal but this is a very low power consumption Intel hybrid. So my theory is that - when gpu is not under the load, it takes voltage from cpu rail (especially when you are on battery only as you are on the video) but soon as you put any load on gpu it will needs more amps and it will switch to voltage from the own separated phase, so then the voltage on that coil will appear. It can be even 0.4V for small load, 0.8V for higher, etc. When you start the laptop power saving is not working so the gpu voltage is present, but soon as you go to Windows gpu don't need it. Just do some test. Run Furmark to maximum gpu stress load and you will see that voltage on that big right coil will stay between 0.8-1.1V. Stop that test and do another one but using prime95 for maximum stress cpu and you will see that vcore coil for gpu will stay at 0V (if you will not put any graphics load for gpu) And what with that left big coil? Well i don't know - it can be simply unused. It can be a part of phase rail for that not-present dedicated gpu (far on the left). I think sometimes it is easier for engineers to keep it on the board working instead of rebuilding all project to adapt everything for not present dedicated gpu. Maybe something needs working driver's outputs as a reference or KBC (super i/o chip) needs to have that working gpu driver present for powergood signal.

[@joeycarr1398]

I'm wondering what the squematic for this mobo shows.

[@trtmrt9666]

Thanks on pragmatic explaining. Even complete novice like me can understand it.

[@Radek__]

But if you're novice (as you've said) then please remember that, this is a rare situation (an exception). New approach in the newest low power consumption laptops. Because in all other cases, if there is no Intel hybrid bga chip which contains inside: cpu, chipset (pch) and gpu, then all voltages on all coils are always present during full on. Voltage can move from low to higher (depends of load) but there is always something above 0V. So that is way Sorin was surprised what is going on to see 0V on gpu coil with picture on the screen (because it is new idea) :)

[@manolevld]

Salut Sorin! Te urmaresc de vreo 2 luni si habar nu aveam ca esti roman. :)) Imi place foarte mult ce faci. Spor la reparat

[@danlangedal1613]

Hello from Norway! This is very good channel. I learn so much. Never stop doing this videos!

[@rokasbravo9714]

sorin, the reaction of yours on white lenovo laptop, just unbelievable . :D

[@jamesmclaughlinprimitivele4587]

It's nice that you repair to working stuff that would just straight to trash as it's the cheaper stuff.

[@PHONE-LAPTOP-REPAIR]

this is so interesting again.deeper and going deeper is a genius thought

[@khalkhal2372]

A pleasure to watch your video as useual. Hope your back is better. Don't forget to do some physical activity every day. Even for some minutes only. Love from France

[@danbeuscher9679]

I love that your videos are real time, and my wife loves your accent...

[@joeycarr1398]

Dr. Sorin thanks for this vid. If you may, please come with more laptop repair vids if possible.

[@kumarshubham3230]

i think i have a little bit explanation for it now our technology is more advanced and batter then the past look on that point some we also miss single core voltage(0.8v) its whay for the battery is low and laptop is in power save mode and the bios is an advanced bios which only give the vcore supply when its seriously needed and after then for saving battery its cutt the supply and save the battery and obviously the other power supply gets active on turbo mode thanks.

[@julianjones7493]

Until now I did not realise you are romanian. I like your videos and I appreciate that you share with us everything. Unde lucrezi? Toate cele bune!

[@MrRvdbeek]

I thank you for the great work.simple things can be looking worse. But you find it again 🤔twice. You are real deal with this problem and check it out in the next steps 19, 3.3, 5 1.1v same story as ever. Thank you 🙏

[@saarike]

Great entertainment and learning video before going to sleep. Have a nice weekend!

[@ronaldsmith4365]

Great video , always use additional tape on lcd connection as it is not a locking type. I use very sticky packaging tape.

[@alien_man1669]

So it is common that phase limiting starts quickly to lower consumption. Ryzen CPUs are known for doing that I am an over clocking enthusiasts and someone by the name of buildzoid has a channel called actuallyhardcoreoverclocking and a video showing him messing with phase controlling, power duty and switching frequency and what it does on a oscilloscope that was very very interesting. Just search buildzoid digi+ multimeter if you're interested

[@Dr.muthanna]

Would you please inform us when you know about that zero volt supply Thank you Sorin for a nice video

[@1johnmcmahon]

I love the expression @ 9.15 .......Aw F@@K Lol Happy Birthday Sorin keep those videos coming

[@smartatwork2344]

Hy, Sorin - like your pragmatic way to fix something. Can you display the Voltage of your PSU, not only current?

[@Kreska0]

Happy St Patrick's day !! Love from Ireland 😀

[@Kreska0]

@ADMIN what ??

[@HePBHuq]

Always nice to see a new video upload.

[@ciprianiezsenszki7798]

Mai multe videoclipuri!! Respect!!

[@zx8401ztv]

Perhaps your probes have a dodgy solder joint, try running 10 amps through them and waggle the cables to see if it jumps.

[@BreathYouTake]

do any videos of your work we love u and love to watch you sorin :*

[@MindYourBusiness1970]

Welcome back , ok let's fix something

[@techparistech2659]

Great Video again Sorrin Sorrin need information about the battery charging section in laptop’s doe’s the 14V -9V from the charging IC output’s to coil and for the battery pins only if the battery in ? what if SIO detect there is no battery at that point SIO will not give the enable signal to charging IC?

[@philippezhang]

Happy to see your video again :)

[@usmanmuhammadshehu5682]

please how can I get full of your tutorials

[@mariussudu8103]

buna iti urmaresc toate videourile ,te rog daca poti face un video pt incapatori ,cum masuram piesele de pe placa si cum folosim o sursa liniara de 30 v si 5 amh

[@kimspeller6941]

hey good video, even if its just to show how you can be trolled by other peoples work ? if you had just replaced the screen and it did not come on.............would you not check to make sure you had plugged in the connector right ?

[@walterortiz8586]

do you have a video for reparing a TOSHIBA laptop any problem just to identify component on the motherboard. please I really appreciated.

[@idrissafotiguisamake9534]

Hello sorrin , please make a movie where you wired a MOSFET, please make a schematic, thank you so much

[@abmuis]

i am glad you are happy

[@forwardchien5914]

If the CPU of Lenovo laptop is KaybeLake , there are three voltage around the CPU. Vcore , VCC_GT and VCC_SA , my mentor said that VCC_GT have zero is normal. I still dont know why when I check the schematic file.

[@sidahmedikhelef8748]

I confirm.

[@darrenstrathdee7425]

Sometimes i feel when i watch you its always friday for you.

[@yehtut3209]

many thanks, sir.

[@mahmutpala7578]

we miss you man where have you been

[@malithravindran3546]

I might be wrong but it seems like it had a frozen bios. as soon as he removed the battery and re connected it, it started working again.

[@bahadoromid3554]

Your job is great.thanks

[@stefanfraites7823]

Hahahahahahahahaha! Love the part when he was like "ooohhhhhh fuck"

[@rubenvanderkooi2898]

You don't use any ESD-safe tools. Can you explain why?

[@bolon8200]

he's good at what he Do.

[@TheNpcNoob]

I trired 10 different inverters and lcds and still no power to the backlights? Could it be the cable delivering the power to inverter?

[@5000000000250]

I learned a new things. Thank you!

[@maseratimastare1849]

hai pak cik sorin never boring watch u channel

[@Steven.Cartwright]

Just started watching your videos. Where are you located? Are you in the UK?

[@TheDimanoid999]

33:25 The moment I died xD

[@617letsgetit]

Moral of the story: make sure everything is properly plugged in lol

[@f1lab535]

I know that feeling after that first job hahaa

[@TypicalFrogman]

Nice video

[@trxraptor4106]

Sorin like these laptops are 1.8 gb just and about 1 or 2 ram memory so for what they are used can you tell me

[@electronic7979]

Useful video 👍 very good

[@mr-bahi3338]

Thanks

[@orange11squares]

The question is: why did they make the V-in 19V always on the lcd connector (LVDS)....what is the point of that.... why didn't they put the 19V trough a mosfet commanded by the ENE and to be there only after the startup when you actually try to push the on button of the laptop ....i mean why the 19V 'always on' the LVDS connector even when the laptop is in OFF state.... isn't that stupid? Daca puneau tensiunea de 19V printr-un mosfet (care sa se deschida doar dupa ce apesi pe butonul de pornire) inainte de conectorul pentru display nu era nevoie sa scoti bateria.

[@randomgamer4518]

I have HP Elitebook 8460p it have charging ic issue can you tell me about its Charging IC

[@paul-c7541]

Sorrin , you need to take the pay off the colleague who screwed it up.

[@evilspeech9697]

Sorin, one cuestion. If the power button is integrated on the keyboard, in this case ASUS...and you have short on pwrbtm, can you disassemble this keyboard? or fabricate a pwrbtm on 3.3v signal on the board? I have one case similar, and take the option 2 :( It's nice to see you. Greetings from Argentina.

[@laboratorioassembler]

Nice question :) I think that the power_on line is still on keyboard flat. ..

[@evilspeech9697]

@@laboratorioassembler I realize a jumper on motherboard and power on the laptop, works on for 1 hour 0 problem. So i canceled the keyboard on short or maybe the button itselft, get two wires and made a power button outside of the laptop! And i made this BECAUSE ANY posibilities to open this keyboard and repair a pwbtn!!! Asus gamer edition, 40 clinchs on keyboard reverse.

[@Gabriel2.0]

cristi f**ked up hahaha

[@palicmarko]

I have lenovo g565 and a i have on power button 19v and on start up cip 0v can you help me

[@gsmdoctor3314]

whats the address of your shop sir?

[@computersrepaircotesaint-l7407]

thx the greatest

[@Adrian-mb6ej]

Cristiiiiiiiii!

[@DumahBrazorf]

You better put some fresh new tape on the first's connector, maybe its teeth are broken.

[@flockysstudioproductionlab2404]

Salut imi plac mult videorulile pe care le publici .am un Hp fara lumina pe eran dar cu imagine am schimbate ecranu dar la fel ma inebuneste!!! Ai vreo idee? O sa ii schimb si cablu dar nu stiu care e prob

[@georgedone7997]

E un pin numit PWM prin care e controlata luminozitatea ecranului. Cel mai probabil din cauza unui defect pe placa de baza nu mai ai semnal acolo. incearca sa conectezi pinul respectiv printr-un rezistor de 50-100 ohm la 3.3V. Ecranul o sa mearga tot timpul la luminozitate maxima, nu mai poti reduce luminozitatea dar macar va merge.

[@flockysstudioproductionlab2404]

George Done ok ms mult👍

[@flockysstudioproductionlab2404]

Daca e sa iti trimit un laptop la reparat unde ți-l pot trimite

[@georgedone7997]

@@flockysstudioproductionlab2404 nu locuiesc in Romania, deci nu prea e o optiune.

[@flockysstudioproductionlab2404]

George Done nici eu eu sunt in Anglia

[@alex-se8nv]

Hello sorin. If you Ever want to sell your Desk, i buy them 😄

[@p8sp8s99]

This is a legendary desk, like his owner :D

[@wisher21uk]

Oh f**k......... lololol I feel the pain Sorin 😉

[@bolon8200]

you learn from doom helpers

[@FrancoCoccini]

looks like a software driven thing.

[@MP-yt4cx]

I have never seen vcore missing and laptop working voltage need to be on all coils for working laptop can anyone explain this????

[@alien_man1669]

Are you talking about a multimeter reading or a sensor like hwinfo64 or MSI afterburner? If its software that means the motherboard company sucks at coding bios or something but if it disappears from a known source you make need driver or chipset update. If you are talking about multimeter how the hell is it functioning is what id like to know or youre reading from the wrong place....well you did say laptop so I assume its not open so yea try cpu-z or hwinfo64 maybe aida64 and remember vcore is not always labeled vcore for example hwinfo for me says core VID but that's not the real voltage, CPU section is labeled CPU core voltage which is real voltage getting to core but motherboard section is labeled vddcr CPU and is what the vrm gets before voltage drop. But software can never be trusted 100% some companies are very close, some are kinda close but miss the important parts and some boards will tell you very scary lies. Just keep that in mind

[@alien_man1669]

Ohh you were talking about the video. There was a cable disconnecting it

[@jamesmclaughlinprimitivele4587]

Is it me or does that screen have bubbles in it?

[@will_doherty]

It's you :-). The protective cover hasn't been removed from the new screen yet, the air pockets are bwetween the screen and the protector...

[@lPlanetarizado]

easy money

[@matesomafarsang7690]

Are you hungarian?

[@RespawnRestricted]

Easy fix for Chromebook walk to trash can insert Chromebook in trash can done

[@gregorye6075]

Tricky jobs

[@donald1056]

You need to get different people to work on them - easy fix - your very good - they are not

[@geonylove]

cine este cristi?

[@powertech6816]

this laptop is a no.1 pain in the ass i dont even bother with these

[@danbeuscher9679]

I think your people are playing jokes on you...

[@bitsnbobs1969]

do it your self they ant got clue

[@abdurahmancorovic807]

:)

[@aqib2000]

Shit