How to spot a faulty CPU - How do we know the CPU is even faulty?
ฝัง
- เผยแพร่เมื่อ 24 ต.ค. 2022
- UK Ebay store: www.ebay.co.uk/usr/sorinelect...
US Ebay store: www.ebay.com/usr/ers_usa
WebSite: sorinelectronics.com/
Patreon support: / electronicsrepairschool
TH-cam Members: / @electronicsrepairschool
Forum: forum.sorinelectronics.com/
Discord: www.sorinelectronics.com/discord
My tools: www.amazon.co.uk/shop/electro...
PayPal me: www.paypal.com/paypalme/Elect...
you made so many happy people world wide from teaching how to fix. No one can teach like you. you are the BEST
Thank you for supporting us with these useful lessons
Excellent sir as usual
Nice Video Dear Sorin!
unbelievable. thank you for this fantastic tip.
Thanks Master Sorin...
Very good video and informative
thank you, very useful video
Thermocamera is expensive. However very useful not only for CPU fault finding. If electronic repairman, electrician or HVAC technician can afford at least $350 worth thermocamera with 160p+ resolution, he must get it. I agree - alcohol under zooming lens or microscope is nice simple method. We used thermal paper from fax machines or cash terminal receipt rolls - overheated faulty components left nice dark rectangles :)
Nice video, thank U 🙂
Great, i learn something new!
Good luck sir
thxs milord!)
Please do you have a detailed video on fixing the 3v & 5v power rail?
Thanks!!
Amazing !!!
I'm your number one fan
Thank you so much Sorin ❤️❤️❤️🥺🥺🥺🥺🙏
good idea
thanks sorin...
اشكرك
where did u place positive? on any legs of the coils?
also what voltage u provide? like 1.5v enough to see short?
how to find which side of an inductor should i keep to get the reading and how to identify which power supply is for which chipset
You are amazing in the way that you describe, I have one question can we apply those methods on the GPU processor also ?
I have come across countless GPU problems and this is how l got around them "1st l apply wax around the edges and l put a coin on top of the GPU then after wards l apply heat using a heat station for about 5-10seconds"
@@Khedha94 and then what happens or what would be the indication that the gpu is faulty?
hello mat excell video as usual . i have a question plz . i have lenovo was dead charged battery manually tested laptop came back on . one day after again all battery charged has eeen drained to ziro and now whatever i am trying to charge it manually (by bench power supply) it doesnt take any charge ?! is the battery dead or i did break it down you think ? thanks a lot
What thermal cam does he use?
01:07 the two phase on the left of the cpu is VCCGT they're for the intel graphics. Three on the right is Vcore, they're for cpu core. It has nothing to do with The Turbo Boost.
Have you got any videos showing how to set the power supply up? Please. I don't understand why it doesn't push take all the power you set it up for?
Please what's is name of the camera u used
How to test the new ones with graphics included on the same chip?
Good day! Tell please what Thermocamera do you use? And what microscope? Thank you
Thank you Sorin, i have a pga socket cpu, the problem is when i check the core coil and other components near they all beep with ground, but if i take out the cpu from the socket then there is no beep with the ground, can you please suggest what can be the problem there.
This video is seven months old, but I watch it now, but I have problem with cpu i5 6600k mounted on Asus Z 170k, both bought used on eBay. I can't install win 10 pro from usb stick, neither from SSD with previously installed Windows 10 pro, that work fine on old motherboard. Only get blue screen errors. I solved this problem with turn off all cores, set on only 1-3 cores and works fine. I tried everything setting changes in Bios hopefully to work with all cores but none. After so many tries my pc won't boot no beep, no post, only black screen, all fans and led on motherboard work. Probably my cpu is completely dead I don't know for sure. Now I ordered another used cpu i5 6500 from eBay, I hope it will work. I think the motherboard is ok..
Please sir I need some set of tools list from u to start some chip level work. Plz list for me so I can buy them gradually. Thanks
دمت گرم شاه
Good day master thanks for all you do for us sir🙏 the petrol oil you made use of is it ordinary petrol for cars & vehicle?
Sorin refers to it as 'petrol' but it's really 'white spirit' --- you get it from places that sell cigarette supplies --- 'Zippo Lighter Fluid'
You can also use rubbing alcohol (contains 30% water). The nice thing about that compared to pure alcohol is that it has 2 different boiling points which help create a better effect than alcohol alone.
@@waynesallee-com Explain to me how/why having a miscible solution of IPA (boiling point of 82C) & water (boiling point of 100C), is practical? Zippo fluid (boiling point of 35C) shows up faulty/overheating components quicker, as you need to inject voltage for a shorter period of time to detect/observe the fault.
@@gcbification okay thanks, hw does it suport cigarette smoking so that I find it here in my country
@@linchpinshalz943 In essence it's this stuff --> en.wikipedia.org/wiki/White_spirit ...the zippo lighter fluid is just more highly refined, to remove some of the heavier aromatics so it isn't so smelly =)
Fantastic video and i see you bypass the mosfet and send power direct into the CPU but if the computer isnt on doing work and calculations, why is the CPU taking current and heating up? What is happening here?
Some of the transistors in the CPU are short so they are going to take current. When there’s a sure there is heat.
@@shiftctrlhack Yes i understand that when tracing down hot spots. BUT wasnt one of his boards the GOOD CPU but still passed .8 current at .7 volts. So if all transistor inside are good why are they switching on and warming?
@@xx3868 The processor will still use power if you give it power. It's like, if you apply power to some location on the motherboard, the components connected to that area will still use some power even though the motherboard does not turn on. The processor will still try to operate on what power you give it. It's just the nature of all of the components inside the processor. The individual components in the processor will carry some electricity.
@@waynesallee-com Yeah i forget theres approx a billion transistors and leakage alone together would give you say .7 of a amp. Bypassing the mosfet and powering juice directly into the CPU, i though there might still be some gates that had to turn on to let power in say by the super IO ect but it looks like the mosfet is the last gate and then it all pours in at less than a volt?
So learn something today and that amps test will quickly tell you if you got many amps going in that somethings wrong unless that flood in is because of a shorted cap on the way out of the CPU. Is that possible too? and you still have a good CPU?
I have a whole bunch of boards with hot CPU's so i was going to junk them for parts, maybe not necessarily the CPU?
@@xx3868 I have not kept up with exact voltages of CPUs. The voltage does vary with manufacture, and products. Power going "on the way out" would be ground. Technically, electrons travel from negative to positive, but that's another whole can of worms. But there are capacitors on the back of the motherboard, that apparently connect to individual pins of the CPU.
Actually, I have a CPU not getting hot at all (tried with bensin) but is taking around 100 mA. Is this supposed to be normal?
Recently i received two different brand PCs one an old msi with old nvidia graphics card and the other lenovo with no graphics but both have same issues power is on with fan spinning correctly but no display, am not particularly sure if this reach you but you are my pc maintenance guru can u help.
wasn't this the last video.. or did I do the time warp dance and watch this yesterday but my comment and thumbs up vanished.. Well Sorin is the real deal no matter what..
It's a different video, previous vid is hidden now.
@@SinsBird Oh, thanks.. at 70 I can never be to sure any more ;-)
Hello Sir,
I have an asus x555ba laptop, the fan spins fast and the laptop always turns off about 1 minute after turning it on, what do you think the problem is?
Thank you
I have a x550cc laptop and it happens the same and no picture no audio no network, i detected that a audio and network chips is getting mad hot and i took them off and still has problems, i think its the io chip that has a parcial short and not working right, so i can't repair it.
I have Lenovo Ideapad L340-15IRH. It has i5-9300HF CPU (without integrated GPU) and GTX1050. At the all coils of CPU I have 2 ohms resitantce, as well as the same at the coils of nVidia GPU. Does it looks like a faulty CPU, doesn't it ?
if your multimeter shows exactly 0.00 ohms when you short two probes together 2ohms is normal for that cpu vcore.. Anything below that resistance is bad.. N17X chipsets has too low resistance nvdd phases around 0.5-0.8
I wish this time you try with diode test mode 😢
Same here. I really wished he used the diode mode for a tutorial just once.
Seems sorin used it in his old videos i saw one in which he used diode mode
reball the cpu it will work. cpu die rarely fails. my number 1 suspect is solder balls underneath the cpu.
HQ series cpus gets cold solder joints / micro solder cracks or gray pads under solder balls very often. If your machine stucks at around 0.70-0.90 Amps just reball the cpu. Can't say the same thing for blown up voltage phase tho. That could easily kill the cpu.
Is the CPU always dead when you see a shot spot? Have a laptop with Ryzen 7 5800H cpu, all power rails ok, but no display. CPU getting hot, GPU warm (RTX 3060). Checked with thermal cam and see a hotspot in one corner of die.
Did u find the problem?
@@brayanxpalacios I think the CPU is really dead. When i connect CH341A to the BIOS chip, the voltage of it drops and CPU getting warm in that corner.
👍
Buna ziua, la un laptop Fujitsu , i7 a 6 generație, pe prima faza sunt 1,2 ohmi, pe a 2 faza sunt 2,2, e in scurt procesorul?
injecteaza in proc 1v si vezi cat curent ia
@@glazyrap9244 mulțumesc
I saw this video, it's dejavu
For what reason the CPU cannot be replaced? Because it is soldered on the motherboard? What if it has a ZIF connection?
Repeat?
Can I use gasoline?
sir you should get something to help u with the phone,tripod stand ot something
Isn't this video reposted? Mr Sorin.
There is a spam using the name "ectronics" and putting your channel photo. Asking people to add in telegram in comments.
I banned him, thank you for letting me know
If not where can we get the petrol?
Sorin refers to it as 'petrol' but it's really 'white spirit' --- you get it from places that sell cigarette supplies --- 'Zippo Lighter Fluid'
Its simply lighter fluid. Its used to fill refillable cigarette lighters.
Gas station, duh
Currently unavailable.
We don't know when or if this item will be back in stock.
Deliver to Hungary........?????
384 x 288 IR Resolution Infrared Thermal Imaging Camera for Android Micro USB or USB-C Smartphone with 25 HZ，Hti-Xintai thermal camera
Bruh, see rewa short cam 2. Just ordered 1, serbia.
@@craigtucker777 Hungary
Again first one 😊🙏
😁
The other day I was working inside of Premiere pro(in which my laptop was consuming Dedicated GPU), blue screen of error popped. VIDEO_TDR_FAILURE error.
Tried:
Clean installation of driver
Clean installation of OS from Microsoft site
Rolled back to Windows 10 and installed driver.
Using DDU performed a clean installation of GPU drivers.
Still code 43 persists: Windows has stopped this device as it reported problems (Code 43)
Any fixes?
why repeat your video?🤯
Why not
Because some people don't go back to old videos, and one more thing, this will give you more money and keep your channel alive 🎉
Helpful, but still not a very accurate way.
bla bla bla , waste of time, mixed content
Nice
😀😀🦸♂🦸♂💻