Lenovo Ideapad 320, no power, not charging, not coming on 

I discover you 1 week ago ad I can tell that I’ve learned more in one week than years of study! Best teacher ever!

with the help of the videos i view here on this channel, i have been able to learn a lot. i finally got my own DC Power supply today and i fixed a dead laptop i have had here in my office for over a year. you all need to see the feeling....thank u so much Sir Sorin.

I was about to put charging wires directly to second mosfet but I did not have the balls to do it. I found schematics, and the board itself is like 40-50 euro with cpu attached. But I tried your method and everything worked. Thank you , good man.

hello sir, you are my first teacher on laptop chip level repair and im always grateful to you for sharing your knowledge 🙂, pls dont get me wrong but this is 90% charging IC problem, because the gate of that first mosfet is connected directly to the charging IC..may God bless u more 🥰😍😇☝🏽🙏🏽

Just keep doing repairs like you always have. That’s what we love about your channel. What you call dodgy is genius to most of us. If it works like it should when your done it’s not dodgy, it’s done and working.

Doing jobs with your "doggy" way meaning you are a professional .Happy new year Sorin ,never change your style !

PF101 component is the fuse, its marking "L" means 7A/24V. The next component PL101 is actually the ferrite bead type HCB2012KF. Both inpot MOSFETs are N-CHANNEL.

Same problem with a Lenovo idea pad 500s, I don’t solved yet,my opinion Bad battery. I hope will be a part 2 of this repair. La multi ani domnu Sorin!!

The manufacturer does not want you to repair it. That is why they have priority chips installed. They don't have to publish the pinouts. They would rather have you return it to them for repair or purchase a new unit, Because of this you are forced to develop ways to work around the problem (be dodgy??). As you develop these repair methods you increase your value to the customer (and employer). You should never have to apologize for your knowledge or work ethic.

Yes really amazing, I thought there were no people trying to help in return for nothing. Personally I am totally grateful to all who are part of this Discord family because it has really changed my life. I have been having difficulties with depression and since the moment I registered on the Discord channel my life has changed and I have stopped thinking about bad things. I want to wish you the best of luck in the world and give thanks to people of good heart. I have a blog where I post much more organized material from study material, engineering, mathematics, electronics, schematics etc. A hug to all of you.

You wouldn't know how impacting your videos have been to me. God bless you in return.

Mia fost de mare ajutor tutorialul tau. Am rezolvat si eu laptopul datorita tie. Mulțumesc maestre

Am gasit acest canal de youtube de o saptamana si vreau sa va felicit pentru ceea ce faceti.

The discord channel is a high quality channel. So many active users with good admins/mods and high knowledge. Very rare to find a server like this.

Happy new year Sorin the only reason i watch you is because your dodgy ;) don't try and be something your not for the trolls have a great day

have a good day sorin...best teacher here in youtube academy...thank you very much i learn alot from you

Sorin you don’t know about your work, how holy work you are doing , you have changed my life, i had studied 3 years electronic but i have scared to open a laptop or any electronic device when I started to watch your video i can able repair the things, thank you sir, hats off

Thanks Sorin for this diagnostic, I just discovered your channel and I love the way you are thinking and workind. Electronics without shortcuts is like doing world tour in Moonwalk :) Sometimes it is the only way to repair (yes, it should be used as last resort). Since client always want cheap, I propose 2 solutions : Cheap (shortcut without any garanty and only God willing) and expensive (board replacement, parts purchase/replacement). I inform the client of the benefits and inconvenience of each solutions. Many thanks for what you are doing, and "Noroc si sanatate !".

This video is extremely helpful. I am having this same problem with a Dell Precision M3800 that I am working on. Customer had a damaged charging port, and a bad internal battery. Replaced both and the laptop ran for the rest of the day but I did not realize it was not charging. The battery icon on the task bar showed it was charging but it really wasn't. The laptop was just running off the pre-charged battery. When it finally died I had no clue why it wasn't charging with a new port and new battery. The symptoms I am experiencing is very similar to this case. No power, not charging, not coming on.

Sorin is the best teacher ever ..ur getting old just bcoz of our benefits..😥thanks alot and God bless u Mr

Happy new year to all our colleagues and you my master!

From "shop" point of view you are correct. You do not have a lot of time to spare on each laptop or phone.I have also a shop and I feel the same. Sadly or not we do have to make make money to keep moving and if a job takes a lot of time we have to give up some times and move on. From user's point of view it is a diffent story.

Your video made my laptop starts thanx sir

Don't be sad, I have a little while watching your channel, and I loved it

Tq very much Mr. Sorin I've always watch your video and learn new things everyday God bless 🙏 from malaysia

2020 the Great Sorin is back YEAA!!😊 Sorin: you are a professional!!! please dont change, the world is plenty of bad changes

Thank you so much, I just repaired one like this. Like + Subscribed. That's the perfect fuse, yeah? So actually the people are saying when you are able to do bridges with a solder wire your solder skills reach some level. That's fine.

Sorin, the exact day you promised to yourself: "this year... no dodgy things" !!!! Oh my! A nice way to begin! Anyway, thanks Sorin for sharing & please keep on the great job!

Very Good to see you back. I hope you and your family have a Great Year coming up!

Sorin you are great at fixing things by your wits thats why we love your channel. Complainers are loosers.

The chip is lvs not LV5 easy to mistake. I know 2 1/2 years old. I kept yelling at the screen, but you can't hear😜 Enjoy all your videos. Thank you.

you are great teacher thanks for your teachings

E bine să fii sincer:)) Faci o treabă foarte bună pentru îvățăcei!

I respect your choice ,but what about the dodgy Friday (you can collect Jobs during the week and start every video with "finally Friday" ) .Just think about ;)

Dear sir I am from srilanka. I got many ideas and experience from your vedio. I dont know how to thanks to you. Plese.let me know how to rectify screen or cable problem.. You are the one no.1 best teacher for computer ... Thanks ,thanks ,thanks (Sory for my pour english)

All the best for you and your family in 2020! Any video from you is always welcome. Looking forward to your next upload. Greetings from Japan.

Hi Sorin and a happy new year. First of all. I wanted to thank you for all your work here and thing you teaching us. You teached me a lot in understanding, thinking and doing. Nice that you want go now the professional way and want try to do no dodgy way :-) I understand that it can be sometimes difficult for a repair shop that have to fight with time and costs. As an enhanced beginner I wanted to give you a tip for next repair videos. Please noticed this not as an advice. Begin all repairs with volt checking from charger to charging ports on boards to batterie . Then do always when if possible and even if not necessary a bios reset. That should also be even if not necessary always the first steps in procedure. Sometimes like you showed it, it happened a lot in eg frozen io Bios chips. Ram checks or remove a hard drive can also be rare thing of not working or booting. This Steps are quick and didn't cost you a lot of time on start. Someone told me a time ago when if I remember correctly in this same case on Ideapad. That it has to do with the power management. The batterie discharged to low and is blocked to charge again or fully charged. What exactly it solved I didn't know anymore. If it was charging the batterie manual full to reset the charging power management on the mainboard that blocks it or the charging management of the pcb of the batterie.

Board NM--B301 have BQ24780 which drives the gate in this mosfet PQ311. This BQ has ACDET pin which voltage should be present on the gate PQ311. As a lesson the video is great, but the device shouldn't be taken out to the client because it could be make better. Don't forget of it Master. Still the best channel on youtube in learning the electronics! Greetings Sorin! :)

Happy New Year! and thank you for this movie. Another good lesson

Hi Sorin! Happy new year! I really love your videos. Its like being taught electronic repair by Grew from Despicable Me! Thank you so much for all of your wonderful lessons and for sharing your vast real world experience. I ve learned more from you in practical terms than I have from any book. Please keep them coming! Big love to you! :o) xx

Happy new year Sorin ....Good to see you back :)

I like the way you think - its a practical real world take on repair. Keep going !

Credits to this, I was able to solve my problem. Thank you so much!!

Hey Sorin, thank you so much for your efforts in producing content, that actually makes a difference - but one whish keeps popping up every time your mic transmitts screaches, cracking sounds and what not - please invest in some new peace of tec - for your followers and fans sake - thank you again for this awesome databse and your lectures- have a nice week!

La multi ani Sorin! Este interesant metoda cum cauti o problema, cu benzina, cu brute force, :-) Ca la noi acasa, si cu rezultat. Asa mai departe!

“Lets make a bridge and end of story” XD

27 minutes in - new years resolution - down the pan lol Happy new year Sorin try resetting bios thats a known lenovo issue.

thanks for your effort, and happy new year, i think LVS0287kb is SuperIO Chip (KB) and i think the problem in changing circuit !

Happy New year Sorin, I like you anyway dodgy or not, I watch any video, it gives me the courage to go on and not give up that easy.

The chip you googled is a PMIC (power management IC) U500 not the charging ic , PU301 is charging ic BQ24780, most probably 2nd mosfet is shorted causing the fist mosfet not to switch on which is both N-channel mosfets. BQ24780 will not charge the battery if the mosfets are shorted . The flickering led means low battery. link to schematic www.badcaps.net/forum/showthread.php?t=77579

Hi, I would try the second mosfet for a short circuit, I had exactly this laptop with the same problem. I bypassed the first mosfet and the laptop worked well, as the second was permanently open (I found out later), but the laptop did not charge. After I replaced the second mosfet, the first one worked as well and the laptop also charged the battery.

1) There could be a pulse train on that first mosfet's gate? 2) you could miss spell the chip's number 3) that very first current sensor will provide its information only to the power management chip which is the chip you're after. The power management will eventually drive the gate of that very first mosfet

Boss thank you very much for your comprehensive lessons, I am so impressed and learning seriously.

Happy new year Big Boss. I love this man. Every day i pray to God to give him long long.

Mr.sorin thank you ive learned so much from you

hi man nice job, i noticed that the power management chip is lvs, not lv5

the chip is LVS0287, just ignore the KB termination, there are some google results and some shops that sell this.

La multi ani, Sorin! Bine ai revenit!

Hi Sorin, happy new year!!! I do have the same thing with a different Lenovo. I also bridged first mosfet because nothing on gate but rest is "ok". BUT! It also is not charging, did you recognize, that with 9V on the charging port, the battery IS CHARGING! WEIRD! If you can, please figure out the reason, it woult help many of us I think 😊

Short cuts are great, they save time and money. Happy New year to you and your family.

Welcome back and happy new year for all

u are the best sir..,and so humble..god bless u always

Thanks sorin your God teacher I like your job from Mozambique South African

Nobody: Sorin: I will be pro this year. No more dodgy jobs. Also Sorin: Removes and shorts input mosfet.

Thank you. And i wish you happy new year!

WElcome back in 2020 master sorin

Welcome back Sorin and Happy new year!!!

Hi Sorin, i had the same board with this problem for about a week, second mosfet fail, its on short. You find it on video on my channel.

Toate cele bune in noul an! Continua ceea ce faci si nu schimba nimic pentru ca asta ne place la tine. Iti multumesc mult pentru efortul tau de a invata si pe altii. Tot respectul!

HI SORIN HAPPY NEW YEAR! Dodgy is the way to go. we not trying to reinvent the wheel we are trying to do repair jobs as quickly as possible.

Hey Mr, Sórin...welcome back

Happy to see you Sorin, welcome back.

Me in January 2020: Yeah, I hope this year will turn out great! Me in May 2020: (☉_☉) Anyway, stay healthy, Sorin and keep up the good work!

A great big happy new year to everyone may this one be better than the last one even if the last one was great. One thing about the charging i have had some laptops that need 12 volt not 19

happy new year ........ your are the BOSS of all PRO keep uploading videos everyday this year

Phew... for a moment I thought we were going to stop being dodgy. That's the best part of the job! 😎

Good to see you back. Have a great year!

Happy new year to you and your family. Thanks for your informative and entertaining videos

Hi, I have same problem with Ideapad 520s. However, the battery is flat and will not take charge or turn on with main charger plugged in (I have only multimeter and charger). I think this is the end of the road for this motherboard. Even if I create jumper, still issue with charger I think. Board replacement for 520s is £98 cheapest. I will have to wait for 520s with smashed screen or something on eBay, haha. Thank you, it give me hope that no matter what age you are, there are always problems which make you scratch your head and ask why. Lenovo never used to be like this.

Hi sorin....i think i am impressed by the dodgy job..i think it is actually looks fine to me..nothing wrong with that....i'm always doing the samething...go shortcut if u can..why not.....respect ur way sir.thank you

Happy New Year to you and your family, Mr Sorin. Watched a lot of your video's and learned a lot. Practical info and solutions when you don't have spare parts. I'am not a pro. I simply want to learn things in a practical way. Thanks for chearing you knowlidge. Sorry for my bad english writing. Looking forward to the next video.

Happy new year Sorin. I missed you and your videos. I will watch this one asap :D good to see you friend

Hey! Good job. But you have to check the second mosfet, the second mosfet is the actual problem. When you read it, you will see that it has short to ground that is why it’s not allowing the first mosfet to pass the current to the second mosfet.

Happy New Yeat Sorin. Love your posts and don't wporry about the dodgy posts. I also run my own business and like you said from a business point of view, no schematics, ic data, you face a choice most of the time, time it or give it back unfixed. Keep up the excellent videos !!!

happy new year Mr.sorin , God bless you and your family dear, thx too much for your good effort😍

Happy new year sorin.😊 welcome back.

Happy new year , happy to see you again.

Very helpful thank you!

Happy new year, Sir. We love your videos.

well you should be dodgy sometimes and keep modifying when you can. I think we all learn more from your shortcuts and modifications. Keep the good work Sorin 👍👍

Happy new year Sorin! In my experience the controller of those two mosfet from charging input is the charging ic. you can check with a multimeter.

Happy new year sorin! I'm happy you are back!

You can try replacing the first Mosfet, or the driver ic. Or go on forums and see if anyone knows about the driver ic. And like another comment said, check the second Mosfet (that's a great idea, I never thought of that one! 😉).

Welcome Sorin!! And have a happy and nice new year!!

Wow yesterday I have repaired this laptop, what a coincidence that was the same laptop and also have a missing screw in same hole.😥

Nice new to u enjoy all past vids and ready for 2020 from west Virginia I. USA

Thank you teacher for this video, of a real case, without schematic and sometimes without replacement; we do our best and we comment it to the user. Greetings from Argentina, South America.

Yo Sorin. Happy new year. Like your way fixing things. Learned from you. btw what is your background into electronics?

Thank's so much, this help me to find the way to fix my laptop !!

Happy New year 🎉 and nice to see you again