The really impressive part was Sorin knowing that the laptop should not cycle/loop when trying to start. This is what real experience is about. Your instincts say something, but the evidence points to another way, so you follow the evidence despite your instincts. You can (and will, sometimes) be wrong.
I loved the clamps shorting to vcore ground while injecting voltage. It never crossed my mind to do so. I will do it in future diagnoses. Never lie down without knowing one more thing. Thank you!!!! 🙂 PS: It has been proven that the use of a thermal camera is essential. I need one
I'm currently trying to fix a Lenovo from '23 that has same/similar MPPX 8694 chips. I honestly wasn't even sure if those were mosfets before this video, so thanks! 😀
Nice work, Sorin. I have seen a lot of gaming laptops looping when not using their own charger. It seems to be needed because of the higher power requirements of the laptop. When using your power supply they won't boot because of the lack of power.
Hello🤝 the first time the CPU survived I thought it was a miracle, now I think someone finally got to work and respected the customer consciously or we will not see how the situation at Lenovo will develop or they will offer customers reliable equipment or they will say that it is not profitable for them, time will tell
finally He works on my laptop. i was hoping it was broken so i could try and buy it. difference between alianware and dell is the keyboard connectors. plus usually the alianwares have much higher gpus, 3060, 3070, 3080s use higher power adapters also.
Makes me happy that you didn't give up on it and tried the charger too. It would have been so sad to mark it as a no-fix and the laptop to be fixed. The customer would have been so confused
Laptop makers need to protect the CPU & CHIPSET, a simple zener diode protection circuit to drop voltage to ground if the core voltage goes too high, it is less then 10c in parts.
i don't think you can use zenner diodes, bc the voltage vcore is PWM, it is actually going from 0 to 19V in a square wave, with low duty cycle(more time spent on the zero)
2:15 there! PLF1 next to PJPF2 jumper, how I can identify (if ll be a vram damage) sorry my English I try my best (jumper it's en the under corner left side next to GPU stiker)
Could someone please explain what "shorted to plus" in this or any situation means?.... and how voltage injection highlighted the fault if the short wasn't to ground? I'm still learning so all help is appreciated.
@@markanderson2904 Thank you Mark. He mentioned "3 ohms" in the same sentence, which added more confusion. Whilst it's not a dead short "zero ohms", I wondered where he measured that value. Maybe from the DRMOS, to the main power rail?? Thanks for your help mate. Take care.
I saw many videos about your great work. But didn't know what is the main cause of the damaged boards? So many with no power at all most of them shorted MOSFET.but no one mentioned the possibly what is.
Hello. I'm watching from Korea. I have a question for you. After connecting the laptop dc charging terminal, + terminal resistance? What do I do when I put it somewhere and check if there is any part that generates heat? I have a broken laptop now, so I changed the MOSFET recklessly, but the symptoms are not resolved and I'm frustrated, so I'm looking for a video of the teacher. Equipment includes a fan, an iron, a DC power supply, and a thermal imaging camera.
MPSXXXX Advanced Fault Handling • OCP, OVP, UVP, OTP • Cycle-by-cycle OC/UC • Catastrophic Failure Protection Knowing that they are on the motherboard gives you the courage to continue diagnosing a dead motherboard. 🙂 So far this month I have diagnosed five dead CPUs. Sometimes you feel like staying home 😏
Hi Sorin, why can the CPU not be changed? It seems that if the CPU packs in the laptop is scrap? Thanks for great video's, I am learning a lot from you...
@@markanderson2904 You can only get them from a scrap/donor board, which makes it close to impossible, since you'd have to be SURE the donor board has a good CPU.
Hello, sorry I know my question does not apply to this video but I was going through lots of your videos to find my answer but I can’t remember which video it was that answers my question. If my google pixel phone is only taking in 0.470A when charging, do I just need to jump it with a power supply? (The current is not jumping, it’s at a steady 0.470A) Thank you
Sorin why don't you upload video like faulty laptop computer coming on with battery but not with charger and vice versa!! I'm looking forward to it please
Why do not replace the MOSFETs maybe they are there for a reason. I think companies should send you a motley (varied) supply of chips and transistors for advertising purposes as well
that way amps do not go to cpu and all the heat goes to shorted mosfet, protecting the cpu and you can better view on heated mosfet, it is hard sometimes to see because this mosfet are build for lots of amps and when you short output you can inject more amps without danger for cpu
Creating a low resistance path for more current flow which will be easier to spot under thermal cam, since its does not have a dead short to ground it is only shorted to the main power input as Sorin stated.
Can you tell me what temp you use to remove mosfets? I watch many of your videos but you never mention it. I tried removing a mosfet but it requires much higher than expected temp or its just more difficult than it looks
He has over 500 videos and he mentions temperature in a lot of them. You did not watch that many... You could also buy a board preheater to heat the board from below, to help achieve the needed temp faster, particularly with gaming laptops that have a lot of copper mass so the heat is dissipated. Sorin has a heating mat that he used in a few videos but he says "I always forget I have it"
@@silviuguseila2552 I didn't say I watched all of them, I started watching every video of his since the past 1-2 months. In no single video has he ever spoke about temps of removing mosfets or else I wouldn't have asked, smartass. And yeah, I do remember him using a little SMD heating plate recently in a video, that is a good idea. Not sure if I will do it though since the AC to DC plastic port is right by the mosfet I need to fix
@@bettergamingchairwins2442 smartass?? I tried to help you. You need to watch the videos cause it is mentioned. It is not that hard to find anyway, just google a bit
Hi there, i've dell g15 5511, i5 11gen. And i have a persistent power issue with my laptop. The issue is it gets dead at the place where it is kept shut down, i mean after the laptop works well for a month or more, it gets dead and never powers on. The only temporary resolution i've found till now despite having it serviced by Dell 5/6 times is disconnecting and reconnecting the battery cable, this resolution works everytime but only make my laptop power on and work for a month. Any help/opinion/resolution is welcomed, please i need help with this issue.
18:40 dont look huawei or dell... focus on brand pcb like: quanta, compal, huaqin, winstron, pegatron, foxconn... dell and other outsources projects to other pcb companies
I was just about to comment about how terrible is the design and the quality control on these expensive lapotops but then I watched the video till the end. Anyway I expect other manufacturers will take note and avoid these failsafe design measures in the name of planned obsolescence.
I am surprised there is incentive for them (Dell and Huawei) to use the MOSFETs with fault protection. Very few defective laptops with this fault get repaired and those who are repaired are repaired by people like Sorin, If a dead laptop is returned to Dell in warranty they will just replace the motherboard, and probably sell the defective motherboard to a recycling company, noone at dell will attempt board level repairs, I do not think.
We missed the exited "we have picture" but happy you got pizza in the end.
We have picture ! I can't beleive
@@servicestv-paraboles-pcs6504 We have picture!!! that's crazy!!
Glad to see a manufacturer improve quality for a change. Good job Sorin. 😊
The really impressive part was Sorin knowing that the laptop should not cycle/loop when trying to start. This is what real experience is about. Your instincts say something, but the evidence points to another way, so you follow the evidence despite your instincts. You can (and will, sometimes) be wrong.
"ignoring what I think....but the laptop is telling me a different story" is actually so profound and why I love this channel
Pizza and happy customer... Every one is a winner 😂🍕👍
I loved the clamps shorting to vcore ground while injecting voltage. It never crossed my mind to do so. I will do it in future diagnoses. Never lie down without knowing one more thing. Thank you!!!! 🙂
PS: It has been proven that the use of a thermal camera is essential. I need one
I just wanna say thankyou because i just repaired a similar motherboard with the same technique. For me the faulty was the second chip.
DELL made the worst pc laptop comupters ever came out. Their customers service is horrible and etc You are one man who do the best job in America.
I'm currently trying to fix a Lenovo from '23 that has same/similar MPPX 8694 chips. I honestly wasn't even sure if those were mosfets before this video, so thanks! 😀
Nice work, Sorin. I have seen a lot of gaming laptops looping when not using their own charger. It seems to be needed because of the higher power requirements of the laptop. When using your power supply they won't boot because of the lack of power.
What a rollorcoaster ride that was Sorin; phew. I always enjoy your videos. Looking forward to the next one. Cheers.
Happy to see succesful repair, especially when it is not going easy. All the best Sorin.
the thermal cam really make that huge deference in diagnosing
Shame they're really expensive
Short the output with a tweezer what a magician
It appears both laptops were made by Compal for Dell and Huawei. Compal laptops often have a blue PCB and LA-XXXX numbers on the PCB.
I thought it wasn't the CPU, because the heat spread looked too even, ie, aren't shorts in a chip usually a pin-point hot-spot.
Hello🤝 the first time the CPU survived I thought it was a miracle, now I think someone finally got to work
and respected the customer consciously or we will not see how the situation at Lenovo will develop or they will offer customers reliable equipment or they will say that it is not profitable for them, time will tell
Hello Sorin
Dri-Mos giving Power Good signal without this laptop not starting 👍
Dri-mos having better security
finally He works on my laptop. i was hoping it was broken so i could try and buy it. difference between alianware and dell is the keyboard connectors. plus usually the alianwares have much higher gpus, 3060, 3070, 3080s use higher power adapters also.
Makes me happy that you didn't give up on it and tried the charger too. It would have been so sad to mark it as a no-fix and the laptop to be fixed. The customer would have been so confused
Hello, it is indeed the same mainboard as in the Alienware M17 R5 and the Alienware M15 R7. I love your nice videos. Greetings from Erfurt, Germany.
The replaceable I/O boards are a nice design feature you don't often see.
How come you don't do any TV repairs anymore? Would be fun.
Laptop makers need to protect the CPU & CHIPSET, a simple zener diode protection circuit to drop voltage to ground if the core voltage goes too high, it is less then 10c in parts.
i don't think you can use zenner diodes, bc the voltage vcore is PWM, it is actually going from 0 to 19V in a square wave, with low duty cycle(more time spent on the zero)
@@orange11squares Coils do play a nice role though
Lots of technology, but if a high mosfet shorts vcore, bye!
so we have pizza!
I can't believe! 😊😅
Thats crazy!
Thank you Sorin, love the show the more i watch the more I learn you are amazing teacher thank you.🎉🎉🎉🎉
Someone should make safety and design reviews of these manufacturers. Maybe it won't be important for everybody but it would affect my opinion
today we have a nice gaming laptop - press the power button - nothing happens 🤣
2:15 there! PLF1 next to PJPF2 jumper, how I can identify (if ll be a vram damage) sorry my English I try my best (jumper it's en the under corner left side next to GPU stiker)
Could someone please explain what "shorted to plus" in this or any situation means?.... and how voltage injection highlighted the fault if the short wasn't to ground? I'm still learning so all help is appreciated.
I think he means that the mosfet was sorted to the main power rail whereas it should be around 5 volts.
@@markanderson2904 Thank you Mark. He mentioned "3 ohms" in the same sentence, which added more confusion. Whilst it's not a dead short "zero ohms", I wondered where he measured that value. Maybe from the DRMOS, to the main power rail?? Thanks for your help mate. Take care.
@@REVERSE_BIASit never is a dead 0 ohm short, he says that in other videos. If you keep watching his older videos, you will get all your answers.
I saw many videos about your great work. But didn't know what is the main cause of the damaged boards? So many with no power at all most of them shorted MOSFET.but no one mentioned the possibly what is.
Hello. I'm watching from Korea.
I have a question for you.
After connecting the laptop dc charging terminal, + terminal resistance? What do I do when I put it somewhere and check if there is any part that generates heat?
I have a broken laptop now, so I changed the MOSFET recklessly, but the symptoms are not resolved and I'm frustrated, so I'm looking for a video of the teacher. Equipment includes a fan, an iron, a DC power supply, and a thermal imaging camera.
Good job Sorin
You are full of miracles 😂 I be happy for work 💪🏻
dell spent some time thinking about it, shows that the problem of not selling cpu they need a solution on gaming laptops
they learn from alienware dead cpu
MPSXXXX
Advanced Fault Handling
• OCP, OVP, UVP, OTP
• Cycle-by-cycle OC/UC
• Catastrophic Failure Protection
Knowing that they are on the motherboard gives you the courage to continue diagnosing a dead motherboard. 🙂
So far this month I have diagnosed five dead CPUs. Sometimes you feel like staying home 😏
Hi Sorin, why can the CPU not be changed? It seems that if the CPU packs in the laptop is scrap? Thanks for great video's, I am learning a lot from you...
I think it's because you can't buy the CPU.
@@markanderson2904 You can only get them from a scrap/donor board, which makes it close to impossible, since you'd have to be SURE the donor board has a good CPU.
He explains this in more detail in other videos. You just need to watch them. He also did replace CPU a few times for demonstration
Good job
Hello, sorry I know my question does not apply to this video but I was going through lots of your videos to find my answer but I can’t remember which video it was that answers my question. If my google pixel phone is only taking in 0.470A when charging, do I just need to jump it with a power supply? (The current is not jumping, it’s at a steady 0.470A) Thank you
can i get name of the DrMOS part or a link to buy it I think my laptop has the same issue
Sorin why don't you upload video like faulty laptop computer coming on with battery but not with charger and vice versa!! I'm looking forward to it please
exelente esplicacion gracis es e mucha ayuda
😂😂😂 come on give me pizza 🍕 😅 you always good mr sorin we enjoy your videos and we learn more and more
I have the same problem but the board have a short in vram (I think so) how can I send you a picture for coil mark to ground? Please help!
Hi. Do you have the bios file in Bin format for this equipment for download? Thank you. I'm from Brazil and I'm not able to do it.
happy end 👌👌👌
Why do not replace the MOSFETs maybe they are there for a reason. I think companies should send you a motley (varied) supply of chips and transistors for advertising purposes as well
are you watching the video till the end?
@@maklogetrich2378 yes, you are right
my next gaming laptop is dell ❤❤❤
what is the point of shorting coil to ground?
that way amps do not go to cpu and all the heat goes to shorted mosfet, protecting the cpu and you can better view on heated mosfet, it is hard sometimes to see because this mosfet are build for lots of amps and when you short output you can inject more amps without danger for cpu
Creating a low resistance path for more current flow which will be easier to spot under thermal cam, since its does not have a dead short to ground it is only shorted to the main power input as Sorin stated.
Happy ending😎
Sorin , the donor board with serial dah98nmb8b0 rev b hf it's belong to Huawei MateBook_D15_2020 BoB-WAI9Q model
Can you tell me what temp you use to remove mosfets? I watch many of your videos but you never mention it. I tried removing a mosfet but it requires much higher than expected temp or its just more difficult than it looks
He has over 500 videos and he mentions temperature in a lot of them. You did not watch that many... You could also buy a board preheater to heat the board from below, to help achieve the needed temp faster, particularly with gaming laptops that have a lot of copper mass so the heat is dissipated. Sorin has a heating mat that he used in a few videos but he says "I always forget I have it"
@@silviuguseila2552 I didn't say I watched all of them, I started watching every video of his since the past 1-2 months. In no single video has he ever spoke about temps of removing mosfets or else I wouldn't have asked, smartass.
And yeah, I do remember him using a little SMD heating plate recently in a video, that is a good idea. Not sure if I will do it though since the AC to DC plastic port is right by the mosfet I need to fix
@@bettergamingchairwins2442 smartass?? I tried to help you. You need to watch the videos cause it is mentioned. It is not that hard to find anyway, just google a bit
PD controller is the key
today i got hp victus, capacitor was blowed up near GPU mosfet, i plugged only battery but didn't start, after plug charger it gave screen
nice sticker the customer's got
i believe 😊😊
Hi there, i've dell g15 5511, i5 11gen. And i have a persistent power issue with my laptop. The issue is it gets dead at the place where it is kept shut down, i mean after the laptop works well for a month or more, it gets dead and never powers on.
The only temporary resolution i've found till now despite having it serviced by Dell 5/6 times is disconnecting and reconnecting the battery cable, this resolution works everytime but only make my laptop power on and work for a month.
Any help/opinion/resolution is welcomed, please i need help with this issue.
That’s crazy 🎉
Hi , I have a dell e6400 what the voltage bios battery isn't be(battry is good) , please can you help ?
Dell has its moments 😁
18:40 dont look huawei or dell... focus on brand pcb like: quanta, compal, huaqin, winstron, pegatron, foxconn... dell and other outsources projects to other pcb companies
I was just about to comment about how terrible is the design and the quality control on these expensive lapotops but then I watched the video till the end. Anyway I expect other manufacturers will take note and avoid these failsafe design measures in the name of planned obsolescence.
why the screen is blinking?
You have soo many spare boards. It's time to experiment with CPU or chipset swap!
He did. Did you watch all his videos, or how do you know he did not?
Nice 👌
Love the Ryzen 3/5/7 laptops - great for Schools, although we dont have any laptops as fancy as this one!
I am concerned that the password screen comes off and on again, this shouldn't happen so maybe the laptop is not working fine
Huawei and Dell 🌷🌷🌷🌷🌷🌷
I am surprised there is incentive for them (Dell and Huawei) to use the MOSFETs with fault protection. Very few defective laptops with this fault get repaired and those who are repaired are repaired by people like Sorin, If a dead laptop is returned to Dell in warranty they will just replace the motherboard, and probably sell the defective motherboard to a recycling company, noone at dell will attempt board level repairs, I do not think.
Good for them, pizza for you😜
🍕...Most Pro Use of Tweezers i've ever Seen...That Short to Ground..
MY HP Ryzen 5 is worried, but my Huawei Ryzen 7 is smug!
давай съедим торт..
It should be $200 of charge
We have pizza!!!
We have Pizza.
amd suvive with short any mosfet even not drmos, but intel burn in 95% rip
Computer brands don't make their own boards, this one was made by Quanta. Dell has nothing to do with component selection.
don't they designed the board?
ez pizza 🍕
Alienware is Dell, so its nothing special, that there similar :P
My laptop is 5515 🥲🥲hope this doesnt happens with mine.
18:09 ohh i hear something good hope mine also have this