Sorin’s magic class. 0:❤35 abracadabra. 0:55 open sesame. 13:12 watch my left hand. 25:22 nothing in my right hand. 25:42 hey presto. WE HAVE Peekchore ?😮😊😂. Skills.
Hi Sorin in your next video you have backlight but no picture. You completely dismiss looking at screen connector and then screen, why? In past videos thats your usual method of diagnosis. Why continue down other paths and ignore display. No picture on hdmi, true, but still I would have taken a peak. Also , probably a few laptops binned because I could not confirm bios files good or not. Perseverance is king. Well done.
@@electronicsrepairschool you don't know that. you didn't test anything. The GPU-Z result is NATURAL, every time there is even a minor problem with memory.
@@DIYRepairHour yeah, from my experience, GPU-Z cannot be trusted when dealing with a hardware fault. Data from a working GPU not being cleared when you switch to a dead GPU, sensors tab of the dead GPU showing sensors from the working GPU instead, etc. MATS/MODS best tool for GPU problems.
But hang on, why is desoldering the only way? Can't you inject 1V on the 19V B+ rail first and then check if that 1V penetrated to any of the coils? That way you could detect a partial shorted mosfet powering some of the critical components like the CPU, GPU, chipset or anything else. If none of the coils show voltage leaking to them then you can be certain that all your critical components are behind good mosfets and you can inject more voltage. Am I thinking straight here?
i think i done something like that. ha had shorted 3.3V line mosfet. since i was going in with 19V on mail rail, 19V was going to 3.3v line :) since i had no protection :) i was learning on samo junk laptop so not a big problem but still, learned my lesson
@@LordAnubis0909 Well, that's a very valuable lesson to learn. Now you can pick out which rail is shorted with ease. Just inject 1V to 19V B+ and measure on the coils. Wherever you detect voltage is where you have the short and then, on top of knowing where the issue is, now that you know which component has the leaky mosfet you can increase the voltage up to the voltage of that component to get a thermal signature on the shorted mosfet. In theory it sounds good but in practice there might be issues so it needs to be tested.
You dont even need to inject voltage)) just put your meter in resistance mode one probe to 19v and another one to coils one by one. Coil that shows 0 ohm is one that is shorted to 19v. That is it😂
@@elisaab1990 Can it be that the layers in the mosfets sometimes only break down under more voltage? ChatGPT seems to agree: "Yes, it is possible for a MOSFET to exhibit intermittent failure where it breaks down under voltage but appears functional when tested in diode mode or beep mode with a multimeter."
If it is a fault like that in 99 percent of the cases this method will work. If it will not you well need more than 1 volt to detect it and it is dangerous. You can also guess the power supply from its resistance for example 60 ohms in this case could be vram or cpu logic you don't need to check all and you will learn that by time
you really need to learn how to use mods, it will say exactly what memory chip its faulty or if the gpu its faulty, all you need is only an usb storage and to mounr the tester image on it with rufus and you can use it for all nvidia laptops, please try to do that, if you want I can send you the image of the tester on the discord, but please just do it! save the gpus, the tester results is 99% always right ! i can give you all the info that you need
yeah I cringe every time Sorin disables GPUs on these laptops just because of lack of knowledge. GDDR6 chips on Ali are £4 !!! He basically makes chromebooks from gaming laptops and think this is a job well done. :(((
Sorin, demigod of capacitors and mosfets, are you willing to make a tutorial on how to use mods? I have tried many of them and not a single one been able to find the gpu. Even not on my perfectly working gaming pc.
Hello Sorin, please can you make a video of how to identify the input and outputs and signals of an unknown ic . Much appreciated, I love your videos ❤🎉.
I have a question, many laptop now have onboard ang one extra slot, what happens when the onboard fails? How do we disable it in a circuit? So that the only functioning RAM is the other slot.
isn't this like gpu core has another power rail and vram separate? i mean sure, if vram expecting 1.2V got 19V it could damage the gpu but this is also to be tested, not neccesairly asserted. Here we see that vram's rail taking some reasonable current but what about actual gpu?
yes, the vmem rail is connected to all memory chips and memory controller inside the GPU itself as well. but the main power rail is separate, and it has variable output depending on GPU demand (it is steered by the core itself via VRM IC). vmem rail short is bad because the memory controller is very fragile, but it is NOT always the case it will go bad, as memory chip can act as a fuse itself. tests needs to be run to determine the amount of damage. but these are a software tests. 45-60 ohm on vmem is perfectly healthy in this case, it should not take more current than it suppose to. even if you loose some portion of memory controller due to a short, part of it can be disabled, and have a still working GPU but with less memory.
Hey everyone, need an advice, what if we remove inductor in order to "disconnect" GPU CPU CHIPSET etc just to isolate a faulty main component from the main power rail? What I mean is : the 63ohm resistance, would it still be present if we remove the inductor for VRAM ? Is this just a garbage idea ?
@Stry-Glitch In this case, no. There would be no 63 ohm on the main power rail if the inductor is removed because the faulty mosfet connects the main power rail to the ground through the gpu and VRAM. However, what you would see if you probe between the main power and the mosfet side of the inductor is a 0 or very close to 0 ohm resistance and the main power rail 63 ohm resistance would be gone. This can be useful to see on which side there is a short or which mosfet is faulty when there are multiple buck converters powering the same chip.
I wish I lived wherever you are my gaming laptop just stopped charging 15 months after buying it and they said it would be $1600 which is more than I paid for it in the first place and they won't tell me the specific problem
Thermal velocity boost lol. Makes cool cores toasty again by boosting it until it reaches a temperature threshold. Not to mention Sorin didn't put fresh thermal paste on it because it's for temporary testing purposes.
You can't be jumping to conclusions about GPU death just by looking at GPU-Z. I know from experience that GPU-Z is garbage when dealing with a GPU that isn't perfectly functional. Have 2 GPUs in the system but one is dead? OK, it'll just show the details of the working GPU when looking at the dead GPU. Trying to access sensors on the dead GPU? It'll show the sensors of the working GPU instead. Don't trust GPU-Z for anything to do with a hardware fault. You need to use the NVIDIA MATS/MODS software to run a proper memory test before you declare the GPU as actually dead. Takes less than 5 mins to do the test and it can tell you exactly which memory chips you need to replace. If it says that they're all dead, that's when you can consider writing off the core as a dead IMC.
The GPU is probably fine in this case. But yes, to bring a dead laptop with bad GPU back to life you can replace the GPU, but you need to source the chip from a donor boards, those are not officialy sold.
@@electronicsrepairschool Thank you for your reply. I’m a beginner, and I realize my questions might not be the best. I understand that some components are limited in availability (chipset). My question was whether it’s possible to disconnect them from the main power rail and then supply a higher voltage. In the worst-case if you burn out the VRAM, you can still replace it with available components. I wrote question on begining of video until you have discovered the fault.
The mosfet that you installed is a "30V Dual Asymmetric N-Channel MOSFET" and the original was "Power, Single, N-Channel"!!! Maybe this is why is not recognized!
Unfortunately, being detected does not equal alive. The IMC could be fried which would still allow it to pass vbios information but the core itself would be functionally useless since it won't be able to use any VRAM. But in this case, we don't actually know since Sorin did not test it with the proper software.
@@adaniel69 GPU-Z is not a useful tool when dealing with GPUs in a less than perfect condition. It's the complete wrong tool for this situation. Reboot will also not change a thing since there's a hardware failure. The right way would be to boot into a Linux USB with the Nvidia MATS/MODS tool installed and perform a proper memory test to find out exactly which VRAM chips are dead. It gives a pretty good idea whether or not the core's IMC is actually dead as well. What Sorin did this video was jump to the conclusion that the core is dead based only on the fact that it ate a pulse of19v.
![[DRIP] ‘Love, Maybe’ PREVIEW](http://i.ytimg.com/vi/U7hwHp95m1k/mqdefault.jpg)
Sorin only does magic, with proper little friends & proper calibrated wire! ❤
"A nice laptop to repair, HA HA LAWL That's crazy *bubbles the vape* yeh, we can do it, no problem" - Sorin
Thanks Sorin. I was waiting for this video all day long!
Sorin’s magic class. 0:❤35 abracadabra. 0:55 open sesame. 13:12 watch my left hand. 25:22 nothing in my right hand. 25:42 hey presto. WE HAVE Peekchore ?😮😊😂. Skills.
That heat pad has seen better days (17:40)
don't forget your ssd there , nice job as always.
Amazing video, I have learnt something very important here.
Hi Sorin in your next video you have backlight but no picture. You completely dismiss looking at screen connector and then screen, why? In past videos thats your usual method of diagnosis. Why continue down other paths and ignore display. No picture on hdmi, true, but still I would have taken a peak. Also , probably a few laptops binned because I could not confirm bios files good or not. Perseverance is king. Well done.
Good job mate 👏
For those without fancy thermal camera, just desolder one leg of coil near mosfet, lift it, then measure with multimeter if OK, turn on laptop.
hi Sorin I love your video ! but if yo ucan show us where you put the target of the porwer suply when you work with it could be so cool !
Hey Sorin, in the minute 23:04 right beside the Coils in the upper part, there is a component very hot or i am seeing things? Thank you :)
Hay Sorin you can find the guide on repair wiki for the mods to test memory chips
I know, but here is a faulty gpu memory controller as the memory controler is using same power rail from vram
@@electronicsrepairschool you don't know that. you didn't test anything. The GPU-Z result is NATURAL, every time there is even a minor problem with memory.
@@DIYRepairHour yeah, from my experience, GPU-Z cannot be trusted when dealing with a hardware fault. Data from a working GPU not being cleared when you switch to a dead GPU, sensors tab of the dead GPU showing sensors from the working GPU instead, etc. MATS/MODS best tool for GPU problems.
Thanks teacher ❤
But hang on, why is desoldering the only way? Can't you inject 1V on the 19V B+ rail first and then check if that 1V penetrated to any of the coils? That way you could detect a partial shorted mosfet powering some of the critical components like the CPU, GPU, chipset or anything else. If none of the coils show voltage leaking to them then you can be certain that all your critical components are behind good mosfets and you can inject more voltage. Am I thinking straight here?
i think i done something like that. ha had shorted 3.3V line mosfet. since i was going in with 19V on mail rail, 19V was going to 3.3v line :) since i had no protection :)
i was learning on samo junk laptop so not a big problem but still, learned my lesson
@@LordAnubis0909 Well, that's a very valuable lesson to learn. Now you can pick out which rail is shorted with ease. Just inject 1V to 19V B+ and measure on the coils. Wherever you detect voltage is where you have the short and then, on top of knowing where the issue is, now that you know which component has the leaky mosfet you can increase the voltage up to the voltage of that component to get a thermal signature on the shorted mosfet. In theory it sounds good but in practice there might be issues so it needs to be tested.
You dont even need to inject voltage)) just put your meter in resistance mode one probe to 19v and another one to coils one by one. Coil that shows 0 ohm is one that is shorted to 19v. That is it😂
@@elisaab1990 Can it be that the layers in the mosfets sometimes only break down under more voltage? ChatGPT seems to agree: "Yes, it is possible for a MOSFET to exhibit intermittent failure where it breaks down under voltage but appears functional when tested in diode mode or beep mode with a multimeter."
If it is a fault like that in 99 percent of the cases this method will work. If it will not you well need more than 1 volt to detect it and it is dangerous. You can also guess the power supply from its resistance for example 60 ohms in this case could be vram or cpu logic you don't need to check all and you will learn that by time
you really need to learn how to use mods, it will say exactly what memory chip its faulty or if the gpu its faulty, all you need is only an usb storage and to mounr the tester image on it with rufus and you can use it for all nvidia laptops, please try to do that, if you want I can send you the image of the tester on the discord, but please just do it! save the gpus, the tester results is 99% always right ! i can give you all the info that you need
Please share link to download
Please share it, thank you
Exactly this. Just search the youtube for MODS MATS if you're unaware. There's a plenty of guides.
@@Kiburici do you have a link to it ?
yeah I cringe every time Sorin disables GPUs on these laptops just because of lack of knowledge.
GDDR6 chips on Ali are £4 !!!
He basically makes chromebooks from gaming laptops and think this is a job well done.
:(((
Sorin, demigod of capacitors and mosfets, are you willing to make a tutorial on how to use mods? I have tried many of them and not a single one been able to find the gpu. Even not on my perfectly working gaming pc.
What version are you running? What GPU do you have? Probably have the wrong version if it's not able to find your gpu.
Hello Sorin, please can you make a video of how to identify the input and outputs and signals of an unknown ic . Much appreciated, I love your videos ❤🎉.
I have a question, many laptop now have onboard ang one extra slot, what happens when the onboard fails? How do we disable it in a circuit? So that the only functioning RAM is the other slot.
You can disable onboard ram with programming bios.
isn't this like gpu core has another power rail and vram separate? i mean sure, if vram expecting 1.2V got 19V it could damage the gpu but this is also to be tested, not neccesairly asserted. Here we see that vram's rail taking some reasonable current but what about actual gpu?
yes, the vmem rail is connected to all memory chips and memory controller inside the GPU itself as well.
but the main power rail is separate, and it has variable output depending on GPU demand (it is steered by the core itself via VRM IC).
vmem rail short is bad because the memory controller is very fragile, but it is NOT always the case it will go bad, as memory chip can act as a fuse itself.
tests needs to be run to determine the amount of damage. but these are a software tests.
45-60 ohm on vmem is perfectly healthy in this case, it should not take more current than it suppose to.
even if you loose some portion of memory controller due to a short, part of it can be disabled, and have a still working GPU but with less memory.
Hey everyone, need an advice, what if we remove inductor in order to "disconnect" GPU CPU CHIPSET etc just to isolate a faulty main component from the main power rail?
What I mean is : the 63ohm resistance, would it still be present if we remove the inductor for VRAM ?
Is this just a garbage idea ?
@Stry-Glitch In this case, no. There would be no 63 ohm on the main power rail if the inductor is removed because the faulty mosfet connects the main power rail to the ground through the gpu and VRAM. However, what you would see if you probe between the main power and the mosfet side of the inductor is a 0 or very close to 0 ohm resistance and the main power rail 63 ohm resistance would be gone. This can be useful to see on which side there is a short or which mosfet is faulty when there are multiple buck converters powering the same chip.
sir, there no way to check whether the GPU or VRAM good?
I wish I lived wherever you are my gaming laptop just stopped charging 15 months after buying it and they said it would be $1600 which is more than I paid for it in the first place and they won't tell me the specific problem
Can you switch off the GPU in the bios or do you have to remove the mosfets (All)?
20:00 CPU TEMP 93C with heatsink on?
yeah, it's intel shitty CPUs... i have i7 10850H, the CPU works on 90° most of the time, like 90% of the time...
Thermal velocity boost lol. Makes cool cores toasty again by boosting it until it reaches a temperature threshold. Not to mention Sorin didn't put fresh thermal paste on it because it's for temporary testing purposes.
You can't be jumping to conclusions about GPU death just by looking at GPU-Z. I know from experience that GPU-Z is garbage when dealing with a GPU that isn't perfectly functional. Have 2 GPUs in the system but one is dead? OK, it'll just show the details of the working GPU when looking at the dead GPU. Trying to access sensors on the dead GPU? It'll show the sensors of the working GPU instead. Don't trust GPU-Z for anything to do with a hardware fault.
You need to use the NVIDIA MATS/MODS software to run a proper memory test before you declare the GPU as actually dead. Takes less than 5 mins to do the test and it can tell you exactly which memory chips you need to replace. If it says that they're all dead, that's when you can consider writing off the core as a dead IMC.
Next one chef !!! 😍💗💓💞
Would replacing the GPU be an option at all?
The GPU is probably fine in this case.
But yes, to bring a dead laptop with bad GPU back to life you can replace the GPU, but you need to source the chip from a donor boards, those are not officialy sold.
Yeah
Proper tricky pizza
Resoldering ?
4K400KhmΩ resistor again, Excellent, LOL!
Sorin's (component) box is very hairy... ;)
🐐
I will dipp the rossing into the mossfet. That is how i eat food with sauce 90% sauce 10% food
Is it possible to disconect parts that should not be burned and come with 3,3 v?
Not sure i understand the question, the vram voltage is 1.2v
@@electronicsrepairschool Thank you for your reply. I’m a beginner, and I realize my questions might not be the best. I understand that some components are limited in availability (chipset). My question was whether it’s possible to disconnect them from the main power rail and then supply a higher voltage. In the worst-case if you burn out the VRAM, you can still replace it with available components. I wrote question on begining of video until you have discovered the fault.
To risky you could burn the gpu
I will start soon a series for laptop repairs, i will explain there how to and what you should avoid
Where is the legendary ERROR CODE 43 on the GPU !
did you burn up the GPU by turning the laptop on without the heatsink installed?
19:44 Most likely the driver is not working proper on Windows 10! Try it with Windows 11! If is detected, cannot be dead!
The mosfet that you installed is a "30V Dual Asymmetric N-Channel MOSFET" and the original was "Power, Single,
N-Channel"!!! Maybe this is why is not recognized!
Unfortunately, being detected does not equal alive. The IMC could be fried which would still allow it to pass vbios information but the core itself would be functionally useless since it won't be able to use any VRAM. But in this case, we don't actually know since Sorin did not test it with the proper software.
@@wasddasw6485 well, Sorin is more a hardware guy... Also, he could try reboot the system and then run GPU-Z
@@adaniel69 GPU-Z is not a useful tool when dealing with GPUs in a less than perfect condition. It's the complete wrong tool for this situation. Reboot will also not change a thing since there's a hardware failure.
The right way would be to boot into a Linux USB with the Nvidia MATS/MODS tool installed and perform a proper memory test to find out exactly which VRAM chips are dead. It gives a pretty good idea whether or not the core's IMC is actually dead as well. What Sorin did this video was jump to the conclusion that the core is dead based only on the fact that it ate a pulse of19v.
If Only They Made GPUs Socketed...
🎩🎩🎩🎩👍👍👍👍
Sorin,are there people who watch you live? because you talk to people. or is that not the case?
Discord
Okay thanks @@viralbull8085
How the owner of this system has Asus care ...
why dont you use your super fan to cool
I think it's because it's very noisy hehehehe
He said he couldn't find it
Lick Squid damage