Sometimes i make mistakes, when that happens, they haunts me - Lenovo Ideapad 3-15IMH05 no power 

It's an honest person who admits their mistakes so thank you. Many of us look up to you for electronics and life advice and this shows exactly why. Thank you for all that you do, Sorin.

We all make mistakes from time to time, the bad thing is when we don't learn from them.

I learnt a long time ago, when a fuse is blown, FIRST CHECK WHAT MADE THE FUSE BLOW UP. An IO chip, is in the same category, check what made it blow up.

Best repair channel, always bring me good mood, I watch all your videos, please keep them coming :D

This is the story of my life Sorin. You made a mistake this time... but I make the same mistakes in life, multiple times. I try to laugh at my own stupidity and for me it's just a hobby, I only work with other peoples (or my own) discarded equipment. No great loss except for the amount of useless appliances I have around the place. Even with your extensive skill and experience, these things happen.

hello mr sorin.thanks for all your electronic lessons.i'm learning a lot with you. since 2020 i started following you like a beginner.but now i'm like a professionnal.you're the best repairing teacher on RU-vid. i'm from a little french country in africa called "TOGO"🇹🇬thanks a lot.

The hole in the EC chip is for ventilation 🤣🤣🤣🤣

I'm in my 40s, and I learned that it's not a mistake of you learn something from it. Thanks for posting this, smart people learn from the mistakes of others.

Hi Sorin, use a blade as a chisel to cut the chip legs near the chip body, and then drag solder with the iron. Love your videos, greetings from Portugal 🇵🇹

Come to Besiktas,Sorin...

Their is no mistake there, because even if he changed the graphic card chip, the mother board won't power on due to the exploded IOC and Spider IC They must be replaced too I'm a hardware engineer too!

Well actually i know what your mistake exactly is and I've been experienced these kind of fault. Unfortunately most of the 3.3v and 5 v alw ic are faulty and when you replace this ic , it will blow one of the high side mosfet especially high side mosfet of 3.3 vlaw and it will let enter the 19 v main power rail to 3.3 vlaw power line and it will blow up the ec chip and pch. You must disconnect the jumper output of 3.3 and 5 vlaw to prevent entering the 19 v to output and if these 3.3 and 5 vlaw were present , you would be allowed to reconnect the jumpers which i mentioned before.

How do you know witch chips EC chips are self programmable and witch ones do need to be programmed?

correct me if im wrong but normally if a chip is blown up it's caused by short circuit or something, so if you gonna change that chip you need to check what was the cause or the new chip will blow too.

I think that desision is very good. I have never seen you check coil impedances in your videos. That was big curiosity for me because you always supply power from dc power supply and check the condition. I think that was wrong. Because if there was is a problem in motherboard, charger will cutoff. But dc power supply will not cuttoff and power go through the circuit and then it may be damage to components. As i think 😊. Please explain am i correct???

You should get t-shirts printed with "This is a niiice laptop". I think you could make a killing. I'd buy one.

Sir Sorin, there's always something new to learn from you. Your supposed mistake has taught me the best line of action to take when dealing with this kind of problem. You actually wanted to show us the mistake so we can learn from it. Thank you Sir

Thanks master your efforts always appreciated one mistake does not change the respect you deserve it's not even a mistake it just happens to everyone, you tried to help the customer by giving it a try but he gambled as you said at the start what more can you do.

It looked to me like that Lenovo chip had its pin 96 touching the other.

I use VHB tape to insulate plastic connectors. Sticks much better than Kapton tape and protects against heat. Give it a try.

You have kind hearted to make video about your mostakes, that's why I watch your videos daily sorin sir

Sorin, that's the nature of human....OVERCONFIDENCE .... Hmmmmmmm

Frustration when you check everything & still it will not work' been there lots of times ....................

your “mistake” doesn’t even register with me, Sorin. but i love to learn typical failure modes from your repairs. you don’t use schematics, which would be my starting point, just physical inspection in homing in on your repairs. (mybe schematics aren’t even available anyway.) what would help me is if you could use TEXT OVERLAYS on video, to define what exact chip you are talking about…”io, bios” or whatever. thanks

Sorin! Just don’t develop PTLD! Post Traumatic Lenovo Disorder!

@electronicsrepairschool Is there like a list of laptops you have repaired which you don't recommend buying?

What universal connectors and cable do you use to power the laptop with the power supply?

Charge 75€ for the diagnosis. Checking what the issue is, is part of work. Otherwise if its that easy customer could do it themselves. But obviously they cant….

Aahhh I think I understand now lol. You meant checking the circuit from the coil to pch lol. Sry. But honestly I learn more from your mistakes than mine lol. At least you have the wisdom to understand why lol. Ty for your pain and suffering it inspires us all.

@Electronics Repair School hi, are you using any anti static equipment? Im new to disassembling and im quite afraid to open the laptop and cause a short, i know we must disconnect the battery first and then do whatever you want but i just want to replace my thermal paste in my legion 5 15ahch model

I thought you said you hated Lenovo's because they were poorly designed.

Still haven't figured out how to do chips like this without the solder shorting pins. I've tried low melt paste with hot air. an iron with a tiny tip and no matter what there's always a short between at least two pins. Trying to fix it always ends up just moving the problem to other pins until I have a mess.

Sorin if the I/o chip is shorted and that other chip , won’t the the coil be in short as well. So either diagnostic path you would have taken would of resulted in the replacement of both Chips anyways. So how is this your fault. ? Or am I wrong.

If you insulate plastic with tinfoil, it works surprisingly well at protecting stuff, not 100% though so still try to aim away but I find it's better than kapton.

So the EC chip and the 3.3 power supply blew up as an effect of the shorted PCH, right?

Hello🤝you are only human 👍👍👍👍👏👏👏👏👋👋👋👋👋

what did you get? experience! I think not one experienced person was not without mistakes

Nice video, thanks for sharing it, well done :)

That’s when we learn the most mr sorin ahh from our mistakes thanks for uploading

cant fix em all we are human after all, and thats reason we make mistakes. at least its proof ur not a android or cyborg xD

Sir I have same model laptop with power ic failed . Sir plz tell me the name of ic so I can order and replace plz

Thank you for sharing this lesson

I would desolder the ports from back! Better safe then sorry

You lost today , but that doesn't mean you have to like it. thanx for soul on display

Silicon soak plastic parts and dried out pcb zones

Blow up real good.. put the old chips back

Why Kapton Tape and not aluminium tape ? 🤔

Of course you can change the PCH, get yourself a zhuomao and buy a PCH from a reputable distributor, make sure it's new, as they sometimes come with interenal fuses set by the motherboard for the damn bootguard, I do it all the time, please change the solder balls for leaded ones to reduce soldering temperature and thus the risk of damaging it

good method to explain details and steps

Does the yellow sticker necessary?

"Mistakes"??? YOU?? Ok, maybe you're old and shaky and nervous and take drugs and drink a lot. JUST KIDDING!!!!!!!!!!! YOU are the BEST SIR!!!!!!!!! WE learn, even from your mistakes.

My mistake that haunts me is, I read the title and knew it was a fail, but by the end I forgot and was disappointed at the no-fix - lol -.

Thanks sorin for sharing your experience with us Could you tell us where can we get diagram schematic please

We all make mistakes, it comes with the territory. I used to beat myself up when it happened almost to the point of feeling incapable or stupid, like maybe I should not be doing repairs, especially when I thought about the waste of time and money coming from my pocket instead it going into it. But as you've said before, we are always learning and sometimes that comes best from making mistakes like this. Customers probably won't understand the hazards of this occupation but those of us who do repair work do. Knowledge & experience go hand in hand but we are all human & humans make mistakes no matter how good you are. Thank you for showing those of us who are less experienced than you that it is part of the trade. Ever 'accidentally' crack a panel on a $1500 TV?😖🤬 Sometimes learning can be expensive.🥺

"A little bit of curry" :D

Nobody's perfect, if we do not make mistakes we don't learn. Keep up the wonderful company you are having with us. We highly regard and respect you.

I know this pain very well 😬 but thanks for being honest and still uploading even failed repairs, for others to know what to watch for when doing this kinds of repair. I have got lenovo board with fried ldo, waiting for replacement chip,this reminded me to check everything connected to 3.3 and 5v.

Sorin, Thank you for your generous e-learning for me every week, learn a lot.. thanks .May my God bless you,your family, and business 🙏 🙌 ❤️ Papua New Guinea 🇵🇬

You can desolder both chips you fitted, no point them being there and hope you will use those again so money is not a problem really. The time though... This is something you wont get back. Only way is to start charging flat bench fee for repair attempts

Sorin What was you thinking? Normally you always check the coils. And the video is editing so I thought you did check. You are making a mistake and that’s because you are human. And that’s normal. I still like to see your work it’s so much to learn and we learned it the hard way this time

Dont beat yourself up. As the new power supply chip did not blow up again. I think the power supply chip failed first, which then over-volted the PCH and EC chip. Any other scenario would have caused the new replacement power chip chip to fail again surely.

"Haunts", its in your title, are places one used to hang out at. "Haunt", on the other hand, is reliving bad experiences. Thumbs up, love your work.

Even old professional guys make mistakes! That's a great push up for us, noobs! Salutări, bătrâne!

Is it fixed finally?

Thanx you, Sir.

Thanks a lot for the video Sorin! Another amazing video which we can learn something. I always appreciate that you are not hiding something from us. Each repair is unique and we are learning a lot from you and you are the person who inspire me for electronics too and i'm repairing devices now at home for others. All the new Laptops which coming for repair most likely have PCH problem. It's really strange, before it was first or second mosfet :) Cheers

We learn a life long.... and yeah, also from our mistakes. At least, remove back the new IO chip and the new power mosfet IC you soldered to it😉 maybe the next repair need any from it

I fixed the same model one week ago with coffee damage on the ec area and missing ram 2.5V LDO. Then spent over 6 hours removing the keyboard parts and cleaning them...

I am happy for this mistake 😂 because we learned 3 times more than what we learn from success. I am new to your channel. Thank you for your teaching. 😊

Hi Sorin how are you? What is the brand of the PCH IC in order to see if I can find a trustworthy supplier? kind regards

Quick question . Is this 5v ldo main and used even for usb devices and sata or just some lower power chips?

Try low melt solder.

Get a piece of paper and trace the damage and make a map key so you don’t forget as well as notice other attached items that could of been damaged I like repairs to last, don’t yall

This was a sad ending 😢

Goes to show how much Lenovo laptop's Sorin get's to repair. Their junk! 😂

When failed repair do you pull out the chips that you replace coz it cost money. Many repair shop used to charge repair attempt fee, what do you think about that? Personally i think it fair to charge repair attempt fee cost it takes time to diagnose and time is money lol

Since the 386 motherboards, the chipsets have spare connections, and can be optionally soldered directly, with resistors or capacitors. The connections lead to ground, or to other chips. It seems to be setting connections, but there is no information what to do with them. These options are also in phones, and other devices.

Your mistakes Sorin help us enormously in learning and understanding electronics in general and repairing laptops in particular. Thank you so much for posting this invaluable lesson!

TY that U share Ur mistakes too and we can learn from them😊👍🏻

I always learned that when the explosion was strong, it must have damaged the chip or CPU

stay strong sir, God knew you doing your best, and we hope your time will be better and better

True story bro 😉

Good work anyway

Put some sticky aluminum tape on the plastic connectors should help

Sorins Ghosts are Laptops.. 👻

Awesome video

You best ❤

Every new video you are doing is a lesson for us. Thank you our engineer teacher 😊

Dear sorin, pls tell me how I decided what wire can I use as a proper calibrated fuse

They haunts me or THAT haunts me?

Try using low melt solder and flood the chip with soldering iron then use your hot air to remove it quickly

Thank you and much appreciated.

❤

❤

🧐🧐

Yeah. Thats not a mistake, it's enthusiasm😉

16:41 sir can I use any tin wire for such job?

thanks for the video, we learn

Great work as always Sorin

How long do laptop fans last?