Lenovo E15 A UNIQUE fault, probably can happen only with Lenovo :))))))

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[@PhoneRepairRO]

Do you remeber when i said about this fault on your sunday live video? It was last year, few months ago. The problem comes from tps65994ad. Let the laptop few minutes and check how hot becomes on that area because of the mosfet - does not get the voltage on the gate to fully open.

[@nicolastremblay7527]

I had the same issue. The QB5 was not properly soldered there either.

[@marcellipovsky8222]

The blown up capacitor is a 0.1U_25V_K_X5R_0201 and the missing one at the position over it is a 10P_25V_D_NPO_0201

[@InfoDav]

Thanks, now we know which capacitors to NOT replace.

[@retrocomputinggrotto]

No capacitor, no problem! There is still one other large on in place on the charging port which is more than adequate so no need to replace.

[@luminousfractal420]

​@@retrocomputinggrotto doesnt that depend on the circuit? it coukd be balancing some other section of the circuit based on the effect of those little caps.

[@ochiorbus]

You know what is insane? That the algorithm gave me your video in the feed right after I bought a Thinkpad E16 gen1. :D

[@luckywetland]

Mr. Sorin, this is just crazy! I swear, this is like the 3rd time I see the same Lenovo laptop with the exact same fault, the exact same MOSFET. Seems like Lenovo is doing this deliberately.

[@ferhatbk]

you need the replace TPS65994. If it's not changed, this malfunction will happen again.

[@user.fedorman]

No capacitor = No burned capacitor 🤣😂

[@M.Murtaza]

"we have the picture 🤷‍♀. i can't belive" 😂😂

[@notebookdr6655]

Waoww, in my case, it wasn't off ,I just reflowed the same mosfet ,laptop up running fine ,

[@Hellhound604]

Hi Sorin, once I fixed some power-supplies for some avionics unit!!!! MOSFET’s was running so hot that they melted the solder. Their solution was to glue them down with lots of conformal coating!!! Turned out to be a design-fault, gate drive was too low, so the MOSFETs never entered their saturation-level.

[@2368rafa]

Hello Sorin, once again you surprise us with your wisdom and professionalism. It is incredible that equipment of that level has poor quality in the welding of its equipment as is latent in your video. Like always, thank you.

[@luminousfractal420]

equipment of that level by lenovo is not that level, it just appears to be.

[@koksionglee7978]

That's crazy!!! Factory didn't affix the mosfet properly....

[@dddvvvzzz2012]

Hi Sorin, that laptop will most likely come back. I had the EXACT same issue with this model. The first time i just resoldered the mosfet like you did and the laptop came back after a month with the same mosfet desoldered. After cheking with a thermal camera, that mosfet was getting over 200°C causing the solder to crack. At the time i just bypassed the mosfet with a wire, but now, i think the gate wasn't getting enough voltage and the mossfet wasn't opening properly.

[@mcac-youtube]

😲😲😲

[@fernandoz6329]

Check comment of @SiETechNotebookReparatur , it seems it sorted it out!

[@hedpt]

it happened to me with this same model, so i guess no quality control on Lenovo

[@hedpt]

it was the same mosfet ahaha

[@KL-zt6jx]

The 2 biggest "lies" that I believed as a little kid. "Santa Claus is real" and "we're going to replace the capacitor in another video".

[@jadaojaz8882]

GOT THE SAME ISSUE :) Sorin, I just checked my database I had the exact same model, E15 Lenovo 11th gen on march 23th 2023, it has the same issue, it was barely touching the board very very very tricky as when I put my probe it was measuring right however when i stop measuring by removing the probe it does'nt make contact with the board. in my case it was the second mosfet starting from DC-IN!!! I described the issue as "2nd channel Mosfet badly factory soldered". When I found the fault I did a nice "I can't believe we have pictuuuuuure"

[@johndicarlo225]

That's crazy..

[@Kyermike]

Here's a unique lenovo fault! The pc will randomly stop booting, It'll power on, but nothing happens and every light gets stuck on To fix it, you have to detach the keyboard wire, and the sub board wire. Wow.

[@simonkormendy849]

Most likely the Mosfet lifted off from the solder pad/s because there was a dry solder joint/s, that will most likely explain why the laptop isn't powering on too.

[@luminousfractal420]

or knowing lenovo they press fitted it using the tape so you cant repair at home.

[@luminousfractal420]

most likely lenovo press fitted it using the tape stop you repairing it at home. been there with them before. had a full tower pc, psu died, no replacement would work. turns out they switched all the cables around with a custom wired atx 24pin, for which at the time there was no replacements for. whole tower pc down the drain. couldnt even use the ram etc in other boards, total replacement.

[@A.I.-Arts]

yes. good video but no one mentioned that the mosfet was desoldered through normal use because the cooling from the motherboard itself is probably not the best at that point. It often happens when components are under a lot of stress and don't have enough cooling that they solder themselves out, slip or the flux is boiled out of the solder and the solder joint becomes brittle so it's important to use X Grade Rosin Liquid Flux underneath.

[@Nele_BiH]

it would be nice to have that thingy for showing power draw but for barrel jacks not just for usb-c

[@8peterp]

Lenovo was the best quality before ,after 2018 deep dive.

[@cristianbel7044]

Good Day, tell please what model of microscope do you use and what could advise? Thank you!

[@100uschallenge3]

24:17 that was a comment on recent acer nitro 5 video 😂

[@XantheFIN]

13:00 This happened when i ordered first time msata SSD from china it didn't work.. i thought take a look and when i peeled sticker off one capacitor came off.. i soldered it back on and it worked again!

[@XantheFIN]

Maybe some employee wanted make a prank or was fed up that moment and did what did and called "done". :p

[@fernandoz6329]

Great video! The new motherboard generation components aren't soldered, they're glued 🤣🤣

[@lukedavis436]

ThinkPad E......every thinkpad enthusiast lust left the building lol

[@thomasvnl]

Jsut before you did your charging trick the battery was charging with 2A

[@simonkormendy849]

My theory is that somehow that Mosfet didn't get enough heat when it was being soldered in place at the factory, those solder pads did look to me like typical dry solder joints.

[@DavoidJohnson]

Much of the assembly is done by robots. any faults should be found in QA testing. Most likely this is where Lenovo is weak.

[@mikehibbett3301]

Amazing, loved it. I enjoyed following your analysis and deductions, you were like a detective, and then you peel the tape off and it is like the criminal left their calling card! I hope you enjoyed your payment of two USB-C connectors :)

[@mohamedyassin4181]

Good work Love your videos Greetings from Egypt

[@Max_Mustermann]

That's just Lenovo increasing the repairability of their laptops. No need to de-solder components.

[@Nebbia_affaraccimiei]

20:40 lol thats fkin funny. while u talk the current actually went up. no need for any tricks, just patience.

[@kingslyrics7229]

hello sir i wanna know that i have lenovo ideapad 300 , can we change the normal keyboard and replace it with RGB one?

[@BenRomines]

So I have the AMD version of this laptop and it will charge no issues the problems I am having is, even while connected to the charger while in use the battery depletes rapidly with in hours. Im wondering if this might be similar issue...

[@Geert365]

23:25 Electronic give a finger, take the whole hand school.

3:42 HA HA HA! I will keep both charging ports! 3:)

[@user-vc8bk2cc2t]

Good evening.. I am very happy with this wonderful, brilliant content and the growth of sharing with you.

[@Pittsburghfix]

Great video, learn something new every time I watch these. Thank you Sorin for your continued efforts to support the repair community through your lessons.

[@SiETechNotebookReparatur]

Sorin, I have now replicated your repair in a video, just for you with my bad english :) please check.

[@luminousfractal420]

its lenovo, the cheap copy will be better quality 😂 but they probably swapped half the pins around.

[@mikes.8922]

Dear sorin.Probably the mosfet will come off again. The PD controller is faulty, gives to low voltage to open the mosfets. They will open but with higher resistance and overheat

[@batman4e]

He has warranty.

[@edwardfletcher7790]

Factory lead free solder causes so many problems 💥👹 As for using SMD USB C sockets as charge ports.....Urrrrgghhh

[@hedpt]

Sorin, the laptop i fixed with this problem has the same issue, i've changed that mosfet again and it's charging again :D but i've noticed that mosfet is burning hot so i've changed the other on the side and still burning hot, i guess there is other thingy pushing to much of this mosfet right? maybe the mosfet controller? If this continues working like that in a few months i've to change the mosfet again, any ideas?

[@retropcs88]

PD controller is faulty and gives too low voltage to the gate, so the mosfet doesn't open fully and has high resistance and overheats. You can just replace it with a wire

[@NBMSCH]

they ran out of solder so they put glue instead.. so pathatic design!

[@kamalhassan6681]

Nice sorin😂 it's working my favorite

[@kiwichess]

Incredible Lenovo quality 🤣

[@inventorOz84]

So. Technically, my e15 gen4 is a ticking timebomb

[@SandungaLuna]

I have the same exact laptop and lol I’m thinking of investing in a different brand

[@youssefmo]

How much should this coat me if i take it to repair shop

[@eugene7173]

Lenovo quality control really went downhill on this , components stuck on the pealing cover.

[@patriciaoudart1508]

❤We got Sticked😮

[@user-he8kk6lq7p]

Nice repair عالی بود ❤❤👍👍👍👍👍

[@Vasim122]

Got my hands on broken lenovo 15g2, looks like same kind of problem - not charging or powering up from PD port. Didn't have enough skills to diagnose, so just soldered wires with external 2-pin connector to battery output and made my own charging circuitry with constant-current/voltage regulator (set it to safe 12.3V 4A) with old 19V power supply from other notebook. Now i have free i7-1165g7 laptop which is faster than my desktop, lol. Thanks, lenovo, for using wrong schematics for charging. :)

[@Fan-lq6uv]

What USB meter are you using in the video?

[@ctecrwp]

So in case of Lenove, always check under shield if something is popped.....

[@tommajor1013]

lenovo laptops are always with unique issues

[@Negiku]

23:59 Press X to doubt

[@sherlockholmes1121]

Sorin the charging port Pirate 😀

[@fangzea]

Do you know where Lenovo keeps the hardware for the audio?

[@peekpt]

6:45 am and I 'm watching this with cofee

[@JimWilington]

No Capacitor, no shorted capacitor ! ha ha he

[@Hadadoh]

A wise man once said no capacitor, no shorted capacitor.

[@tingining69]

I'm losing my trust to Lenovo. Is there any alternative to thinkpad t16?

[@mahmoudajjan466]

have you ever fixed FUJITSU'S?IS THEIR BOARD;S GOOD?? AND THANK YOU FOR THIS VIDEO AND FOR ALL OF THEM OF COURSE

[@user-mc7ez6lm4x]

A better solution is to take a whole set of AC adaptor and a charging port from another dead llaptop. Not necessarily a Lenovo one. They all have a compartment in the case for the charging port nowadays. No matter what the plug is a circle or rectangle, you just solder internal wires and implant the port inside.

[@ajinkyadhane9428]

ThinkPad is not thinking 😂😂😂

[@salahadidi3273]

no caps no shorted caps 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@retrocomputinggrotto]

LOL - how on earth can that happen?! Crazy. Saving fractions of a penny on solder so that sticky tape pulls off components.

[@luminousfractal420]

lenovo hate anyone fixing the products. they go to massive lengths to make their stuff proprietary and unfixable. usually with massive cost cutting applied also. your meant to feel herded into buying a new one. id never own one again, one was enough.

[@donald1056]

You get a lot of computer repair shop business - they can't fix it themselves - something is wrong but then you make more money that way

[@psinepl2]

it is very sad to say it but lenovo is most bad laptop for repair EVER :-( frst soldering is bad as see on movie.... also this glue under main chip ... almost unrepairable.

[@bitrehab]

Chuck Norris is nowhere to Sorin because Sorin can epilate a motherboard. 😀

[@NullStaticVoid]

What is this device you plug into that gives all these stats for the USB C? Like a USB DMM pass through?

[@gildardo]

"sexy fuse"

[@stegonet]

MULTUMESC, In sfarsit un raspuns logic. Luni abia astept sa ajung la birou. Am 4 asemenea laptouri, duse la service (vreo 3 aici in Bucuresti), de fiecare data am primit NO FIX pentru alimentare si incarcare baterii. Daca pun bateriile lor pe un laptop ce inca nu are aceasta problema, fiecare baterie se incarca corect. Daca readuc bateriile pa laptopurile lor, fiecare porneste si functioneaza pana se descarca bateriile. Dar, cele 4 laptopuri nu incarca. Mai am inca unul dar la ala, stiu ca e o problema de bios corupt si nu stiu ce sa ii fac. Ah, chiar si asa, cu biosul corupt, incarca bateria.. a lui sau a celor 4. Multumesc de idee si incurajare. Spor sa avem.

[@RedDefender77]

Rumor has it that in the dark web, there's video of Sorin replacing the capacitor.

[@rfr653]

Good job mate 👍

[@ACOnetwork]

24:09 "No capacitor, no shorted capacitor." 😂🤣👍

[@LetsFixITJoe]

awsome ! i wish i would have learned this profession - i could do this day and night - working on tech - i´, in IT - system admin - in my free time i did Overclocking Battles - was 3rd palce for 6 Month with 3Dmark03. Did a lot of CPU Mods with pencil and other stuff ( Athlons,...) ... i love to see you working - its releasing and valuable learnings are included - ok this was a long thank you - anyways :))

[@zaprodk]

9:48 PU4, That "Lenovo" chip very clearly bears the font of ' Nuvoton', I guess they made it for Lenovo?

[@carlosgarciaoropeza5480]

I need to go train in that next-generation soldering technique (AI) for Mosfets "invented" by Lenovo... of course if the training is not very "expensive"...

[@ArcYT]

Thanks for keeping the Thinkpad alive!! Watching on my P73 and hopefully I never have to dig into it myself haha

[@teslasapple]

Maybe was a quick release mosfet 🤷🏼‍♂️

[@DTsinaf]

No capacitor = no doggy capacitor!!! 😛😛😛😛😛👌👌

[@hermesserranoaudio]

Wow! Really bad design/manufacture. Either not soldered or de-soldered by an excesive temperature, is a really bad design/manufacture.

[@Netzphantom]

you are just the god of electronics! Keep up the good work. Im a big fan!

[@slami19]

Yeah, seing it all the time...cant belive thinkpad is that bad nowdays

[@lrrromicronpersei8294]

I had a similar thing with an older iPhone I think it might have been a 5 or 6 was a long time ago. When they had the little sticky foam around the connectors when I lifted the foam about 6 components came along with it. Great job as always

[@fangzea]

I hate Lenovo so much.

[@one_step_sideways]

TL;DW?

[@roche1237]

Keep them rolling Sorin!!!! Good work

[@stephen_day]

Thank You Sorin

[@peekpt]

Wtf 😮 super glued mos fet, no way this factory 😂

[@oilybrakes]

Joke's on you, Sorin! I already removed the foil from my Thinkpad when I had to solder the SSD port back onto the motherboard 😂

[@candabi]

20' to repair it. Nobody compares to the master. Thank you for enjoying our cofee time.

[@di_luka]

The future of technology is unclear, if we continue on this path soon we'll be thankful that the new products will last at least one month after purchasing and hope that the components don't fall off from the device while unboxing... P.S. Very bad quality control and negligence from the manufacturer in this case.

[@mcac-youtube]

Too low cost products, bad designs.

[@magomat6756]

Bad quality control

[@yoshy2628]

I have 4 Lenovo laptops in my house, all are still working fine, no issues with them. I open them every year, deep cleaning, thermal paste changed and heat pads. It seems that the new manufacturer dropped the quality to the lowest.

[@batman4e]

Take care when you are peeling off the plastic foil.😂

[@zaytsevvaleriy]

Check for gates voltage on this mosfet. I can bet - there is 21 volts.

[@secod2022]

LENOVO CRAP

[@laidman2007]

A brand new laptop? My mistake! I thought this model was from 20 to 30 years ago! Am l out of touch!