Thank you so much for sharing, it so interesting how the v-core driver communicates with the processor, and what signals are required for the cpu to function normally. 👌
@@FixTronics its ok sir :) . gladly you replied. is it ok if you make a video about SIO/KBC on which are reprogramable or which are not? how to know if its reprogramable :) sorry im newbie
The board is operating normally, but the measurements are on the main MOSFET in the processor circuit. The Musphat source gives a negative voltage. Knowing that the voltage on the capacitors and inductors are 1.08 volts What is the reason and what is the fault?
There is two Mosfets at each phase of cpu vcore. One Mosfet is connected to 12v and the other is connected to GND If you measure at the first Mosfet with respect to GND you should see 12v. The other as I saied is connected to GND. But if you measure in between the two Mosfets you should see the 1.08v you mentioned. Keep in mind, measuring after the coil gives more accurate and stable readings. Measuring in between the two Mosfets directly will give some fluctuations as the Mosfets are switching. You will need an oscilloscope to measure there
If its a laptop, check the screen related stuff, like voltages, fuses, the wiring, the connector and the screen itself . and if it is a desktop computer, try using a graphic card to try and isolate the issue
@MechaTronicsFix so it is a desktop ( lenovo n1996 motherboard) and I'm using a i5 2500 and a stick of 2gb ram. the issue that I'm having is that the fans turn on but there's no display. i tried everything ( reseating the cpu, moved the ram from a slot to another, cleared the cmos, changed the cmos battery to a new one, i tried the integrated gpu and i also tried with a gpu: gtx 1650) but still no luck. there's no beep sounds coming from it or any lights on the keyboard (numlock/capslock). I'm pretty sure the motherboard is dead...
@@FixTronics Thank you for your feedback. I wonder whether you have had any repair involving what seems to be a buck controller that is marked CPP, on a QFN 2x2 mm package. If you happen to be aware about who the manufacturer may be or what is the part number, it could be quite helpful. Thank you!
You are welcome bro. I don't actually recall if I have encountered such a chip. But try and search for TPS62290 and see its typical application circuit on the datasheet if does match with the one you have and check its pinout like the vcc and the GND pins if they match with yours. I hope this helps you.
Its actually hard to tell when the cpu is bad Because last week I was working on a motherboard that powers on but no display and no keyboard light and all voltages were correct I tried everything to avoid replacing the cpu to no avail, and eventually I had to replace the cpu and that solved the issue!!!
I live in venezuela si so dificult yo find the right replacement... Is there any other ic That i could use? I have so many motherboards where i can take some smd ic
Hi friend Sorry for being late to reply Sure I can share But please give me some time Because I away from home right now I will share it ones I get back home Maybe Tuesday or Wednesday
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The first video on RUclips I saw as informative
Very good video thank you to share your knowledge it’s help me many times in my work on motherboard
You welcome brother
Great in-depth tutorial, many thanks!
your videos is informative.THANK YOU SIR
Welcome brother
Very informative and detailed easy to follow discription of the missing vcore voltage.I enjoyed every minute thankyou
Welcome brother
U're awesome, everyone need more videos from u
Great knowledge, thank you sir
Nice thank you another learning from you
i learn so much you got yourself a new subscriber
Thank you so much brother
I really appreciate it
your videos is informative . thanks you very much.
OMG🤯 Thenqu for lesion more tips 🤝👏👏👏👏👍👍👍👋👋👋
Welcome bro
Very helpful. Thank you very much. Greetings from Spain
Thank you so much
Thank you so much for sharing, it so interesting how the v-core driver communicates with the processor, and what signals are required for the cpu to function normally. 👌
You are welcome
Thank you for your feedback
excellent. Thanks
keep up the good work.... this is really good
Thanks bro
🎉Very Nice. Sir. Very useful
Really excellent videos as alw!
Very helpful
Thank you for your time
Thank you very much..
Great video
Thanks a lot
awesome
Thanks 🎉
am subscribe because ,this perfect ,thanks
Thank you so much
BTW, can you recommend a book discussing this topic? I find it difficult to find very detailed, printed resources about motherboards...
Asus p5kpl am se no display please no vcore to
can we communicate.?
good day sir, why i cant find vccsa , vccio, and vccst vccgt on my schematic, its an AMD motherboard, is there any other name of that
Hi good day
I'm actually not good at AMD Boards, so I'm afraid I can't help you
really sorry
@@FixTronics its ok sir :) . gladly you replied. is it ok if you make a video about SIO/KBC on which are reprogramable or which are not? how to know if its reprogramable :) sorry im newbie
The board is operating normally, but the measurements are on the main MOSFET in the processor circuit. The Musphat source gives a negative voltage. Knowing that the voltage on the capacitors and inductors are 1.08 volts What is the reason and what is the fault?
There is two Mosfets at each phase of cpu vcore. One Mosfet is connected to 12v and the other is connected to GND
If you measure at the first Mosfet with respect to GND you should see 12v. The other as I saied is connected to GND. But if you measure in between the two Mosfets you should see the 1.08v you mentioned.
Keep in mind, measuring after the coil gives more accurate and stable readings. Measuring in between the two Mosfets directly will give some fluctuations as the Mosfets are switching.
You will need an oscilloscope to measure there
so i do have the vcore voltage but i still have no display issue. what else can i do? please help
If its a laptop, check the screen related stuff, like voltages, fuses, the wiring, the connector and the screen itself .
and if it is a desktop computer, try using a graphic card to try and isolate the issue
@MechaTronicsFix so it is a desktop ( lenovo n1996 motherboard) and I'm using a i5 2500 and a stick of 2gb ram.
the issue that I'm having is that the fans turn on but there's no display. i tried everything ( reseating the cpu, moved the ram from a slot to another, cleared the cmos, changed the cmos battery to a new one, i tried the integrated gpu and i also tried with a gpu: gtx 1650) but still no luck. there's no beep sounds coming from it or any lights on the keyboard (numlock/capslock). I'm pretty sure the motherboard is dead...
Quite interesting, thank you! Do you know wherr can i get schematics for desktop motherboards? Thank you!
I always search on the internet.
Some are available for free and others you have to pay for it.
and some are not available at all....
@@FixTronics Thank you for your feedback. I wonder whether you have had any repair involving what seems to be a buck controller that is marked CPP, on a QFN 2x2 mm package. If you happen to be aware about who the manufacturer may be or what is the part number, it could be quite helpful. Thank you!
You are welcome bro.
I don't actually recall if I have encountered such a chip.
But try and search for TPS62290 and see its typical application circuit on the datasheet if does match with the one you have and check its pinout like the vcc and the GND pins if they match with yours.
I hope this helps you.
Where do you get schematics for desktop
I search on Google but they aren't easy to find and sometimes they aren't free
How can we tell if the CPU is shorted thanks
Its actually hard to tell when the cpu is bad
Because last week I was working on a motherboard that powers on but no display and no keyboard light and all voltages were correct
I tried everything to avoid replacing the cpu to no avail, and eventually I had to replace the cpu and that solved the issue!!!
Thank for helpful video, is it possible for you to share layout file and schematic?
Its in the video description
How can I find that IC to buy it, I need to change it, please.
Its NCP102SNT1G
You can find it here at Aliexpress
a.aliexpress.com/_msNivXc
Hi i can not find the replacement for this ic
Its NCP102SNT1G
You can find it here at Aliexpress
a.aliexpress.com/_msNivXc
I live in venezuela si so dificult yo find the right replacement... Is there any other ic That i could use? I have so many motherboards where i can take some smd ic
@victordrum70 I can't think of any similar IC but have a look at NCP1250 but I am not sure if it will be ok as a replacement or not
can you plz share schematic & boardview ???
reply plz
Hi friend
Sorry for being late to reply
Sure I can share
But please give me some time
Because I away from home right now
I will share it ones I get back home
Maybe Tuesday or Wednesday
@@FixTronics ok
Hi brother
I added it to the video description
I wish you all the best..
@@FixTronics thanks but i can you plz share boardview
🅿🆁🅾🅼🅾🆂🅼
do u have instagram page??
I don't brother
I'm really sorry