I am trying to repair an Acer gaming laptop. When I press the button, the light turns on and immediately turns off. I tested all the capacitors and they are all fine. I tested the mosfets in VCORE and one side of them is 0 ohms. I put the red probe on ground and black probe touched the mosfet (source or drain). I also reversed the probes, but the situation did not change. I think the CPU is shorted. CPU failure is a common problem in gaming laptops. Is it a good idea to remove the mosfet and inject voltage? If so, how many volts and amps do I have to inject? The mosfets away from CPU do not have this problem. The VCORE only has this problem. I connected the charger and the laptop takes in 19V. I tested the voltage on side of the first mosfet and it is 19V (source or drain). The other side is 0.10V. Would it be a good idea to remove this mosfet and inject 19V? If I put one probe on the ground and the other one touches the mosfet, it does not show me 0 ohms. I fear making mistake. This is why I need your advice. I look forward to hearing from you soon. Many thanks for your help and patience. I really find your videos useful.
I've done a custom protection upgrade on a motherboard that will protect against capacitor leakage that can knacker motherboard tracers. I made myself a guard made from Polypropylene. I hot pin pricked plastic plates to go under the capacitors isolating it from the motherboard so if the capacitors leak, the acid falls onto the plastic instead of the motherboard. To fit the carefully engineered plastic plates, I lined up & stuck the plastic pieces to the motherboard & threaded the new capacitors through it & the motherboard, & soldered. No acid will touch the motherboard now if the capacitors blow.
Good information about what to check but so fast on the speech and pointing around the board it is too difficult to follow. Zooming in on the areas of the MOSFETs you're probing would be helpful. You're clearly an expert at knowing what should be showing up, and where, but your audience is not. Which is why we arrived at your video looking for help.
DC Mode as in the video for checking the current coming from the power supply through the mosfets/board. It is different based on what you are looking for
You can search online for the chip pinout diagram and see which pin get +Vcc or input voltage. IF you can identify the chip, that is. If it's not stamped or marked (and not all are) you're kind of on your own.
when I replace a screen and a lcd cable with new ones and still i get no display, but the power is there because the chargin light on the right side of the chromebook comes on, what could be wrong? is it the motherboard, some kind of coding issue its having, or would it be an electrical issue? It would be hard to say without testing, but what can I test to eliminate any options ?
don’t listen to the naysayers. I’ve learned more from this video as a starter video than I have from many books on other subjects. I did have to pause a few times throughout the video though to take notes on terms I was not familiar with. But this is a great starter video for someone who knows, nothing about diagnosing power issues on a motherboard.
Motherboard repair is kinda crazy 1.There are alot of different kinds Volts such as 19V,1.3V,25V,6V etc 2.Some boards are easy to track for beginners while are harder eg.like cheap Laptop boards 3.Devices are not cheap eg. cheap Multimeter will not beep 😅 Just saying,thanks for the upload.We hope somedays we will understand this things 😂
Hi , Eric I have issues with monitor , when I plug HDMI it works fine but as soon as cable moves a bit screen goes bonkers and doesn't recognize HDMI , I blame motherboard and will be trying fixing it after watching this Vid
If you're measuring voltage, you set it to volts. If your meter is not auto-ranging, then you set it to a high voltage range and read it. If it doesn't show then you set it to the next lower range until you can see what the voltage is.
Hi Guys, I plugged my powered USB hub into my Yamaha keyboard USB device port. However, the power adapter for my USB hub has PIN revered, meant the positive to negative and vice versa. Now my USB device port stopped working. I think the USB IC may be burned or some resistors or capacitors burned. How could I troubleshoot it and replace the right part to restore my USB back in live? Thanks in advance!
0:31 You said that....I found the schematic for my welders pcb...click back on you videos just kidding, thats why I'm making this video " 😂 your mean for that
Good morning, sorry to bother you, but I have seen that you are an electronics specialist and I was wondering if you could give me some solution. I have a Sindoh 3D 3DWOX 3D printer and when I inserted a USB flash drive to update the firmware, there was a power outage. Now only the Sindoh presentation screen is displayed and the image is frozen there. I have disconnected the printer from the power and even removed the internal battery from the motherboard but it remains the same. There is no way it does anything. It has been left frozen. I'm afraid the firmware has become corrupt. I have observed that the motherboard has some jumpers, I don't know if any of them have any use. Can you help me please? Any suggestions to force flashing the firmware? How can I find out which chip on the printer's motherboard is the EEPROM? Thank you very much in advance.
when i plug my motherboard to electricity it start to do "ticking" sounds, I cant find out where is it coming from. Do you know what could be the problem? My notebook died middle of a game.
Could you please perhaps release a video that teaches us how to trace the signal pathway from the adapter to the rest of the motherboard without referring to the schematics? Thank you!
yeah if there were only some way to get him to talk faster move his leads faster and shake the board around in his hands faster... because I think the way he is doing it now there could still be one person out there in the world somewhere that might have understood even one little thing about this video. And that is unacceptable.
I have a game system PBC and when I plug the power supply to the wall outlet I have electricity in the power supply wire, as soon I connect it to the PBC there is no more power in the wire. why is that?? Thanks in advance and great video
Thank you very much for this Video, helped alot. Turns out i was using the Multimeter wrong on the Chromebook Motherboard im testing lol. Im mostly self taught with help from Friends and RUclips. Thanks again and Happy New Year
I need help. With what I can use to replace this with Nv2wj 0.15 ohms 2w F047 I don’t know what I can replace it with for I’m unable to find part. No color bands on it. Hi st looks pink and has like clay coating. And help be greatly appreciated as I hate throw say a 70” tv away
I will never let Satan, the Angel fakes, the evil Pastors to dictate on the flow, I would rather boil the flow they influence like a soup and discard that to the dogs to drink and create my own flow that will adjust to me.
Saddly you're both speaking too fast and barely are pointing or differentiating components. I saw you point to the same chip at least 3 times and each time named a different component.
I really don’t understand your video… I left more confuse than I came. Please try to show exactly what you are doing into details, less of the talk more of the visual representation
How so? He walked through step by step, physically demonstrating basic motherboard troubleshooting (i.e. power delivery testing). If at any point you find a point where power delivery is failing then you've basically isolated your issue and can focus your troubleshooting on more specific elements associated with the failure(i.e. input rails/output rails) or go about the repair once it has been fully isolated. All troubleshooting is a logical process of elimination and subsequent repair. You analyze the operational mechanisms to understand the operational flow. Then you test each element's functionality to find the point of failure. Then you test the sub-elements of that point of failure until you isolate the failing sub-element and so on. You do this until you arrive at either the most minute failure (or point of falure) or until you find a point of failure that constitutes a realistic starting point for the repair process. Some people might diagnose a PC to the component level, while others may diagnose individual components in an effort to repair the component as opposed to replacing it. Which is what he was doing in the video. Either way though understanding what troublesooting is and understanding the functionality of the system/component/processes is key to successful diagnosis and repair. It's really as simple as that. A little baseline knowledge is all that's required to understand what he taught in this video. If anyone lacks this baseline knowledge then just go study a bit and the value of the information is clear.
Sorry dude, but you went too fast for me to follow. At 3 minutes, I couldn't see where your probes touched. Also, I know Jack-shit, so how would I know what to touch as earth? I have a Dell Latitude that switches off after 3 seconds, so I'd like to be able to test the mobo. I tried a new mains cable and tried a new cmos battery, but no different. So I guess I need to figure out the main board. I'd love to see an idiots guide for doing testing.
terrible video. didnt tell us how to find ground didnt tell us the setting for ur meter, u are darting about the board picking it up flipping round pointing at nothing. awful video
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
If you found this video informative, please leave a like and sub. Should we make a basic troubleshooting video for a Macbook Logicboard? Let us know!
I am trying to repair an Acer gaming laptop. When I press the button, the light turns on and immediately turns off. I tested all the capacitors and they are all fine. I tested the mosfets in VCORE and one side of them is 0 ohms. I put the red probe on ground and black probe touched the mosfet (source or drain). I also reversed the probes, but the situation did not change. I think the CPU is shorted. CPU failure is a common problem in gaming laptops. Is it a good idea to remove the mosfet and inject voltage? If so, how many volts and amps do I have to inject? The mosfets away from CPU do not have this problem. The VCORE only has this problem. I connected the charger and the laptop takes in 19V. I tested the voltage on side of the first mosfet and it is 19V (source or drain). The other side is 0.10V. Would it be a good idea to remove this mosfet and inject 19V? If I put one probe on the ground and the other one touches the mosfet, it does not show me 0 ohms. I fear making mistake. This is why I need your advice. I look forward to hearing from you soon. Many thanks for your help and patience. I really find your videos useful.
Please do a video on a Macbook.
how do you test a motherboard without diagnostic tool?
Thank you this really gave me a bigger understanding of how motherboards are powered.
Try to secure the board in one place and just point. It's very distracting when you move the board all over.
Nice video, just you need to shake the board more vigorously so we can see it better without vomiting:).
🤣😂
I've done a custom protection upgrade on a motherboard that will protect against capacitor leakage that can knacker motherboard tracers.
I made myself a guard made from Polypropylene.
I hot pin pricked plastic plates to go under the capacitors isolating it from the motherboard so if the capacitors leak, the acid falls onto the plastic instead of the motherboard.
To fit the carefully engineered plastic plates, I lined up & stuck the plastic pieces to the motherboard & threaded the new capacitors through it & the motherboard, & soldered. No acid will touch the motherboard now if the capacitors blow.
👍
Thanks for the knowledge. Where can i get the full video?
I played this at 0.25 speed and it made perfect sense to me, thanks
Good information about what to check but so fast on the speech and pointing around the board it is too difficult to follow. Zooming in on the areas of the MOSFETs you're probing would be helpful. You're clearly an expert at knowing what should be showing up, and where, but your audience is not. Which is why we arrived at your video looking for help.
Set it to 0.75x and he sounds almost normal lol
@@lost4468yt"almost"
Bruh, the beginning got me so discouraged until your broke the ice 😂 I was bout to say screw it
What are the settings you use on the multimeter for testing power
DC Mode as in the video for checking the current coming from the power supply through the mosfets/board. It is different based on what you are looking for
@@lapfixbut on some multimeters there’s 600, 200, 20, 2000m etc so which one do you use?
@pxzvcltd you would set it to 20 for checking for voltage on the power rail like this but do yourself a favour and get an auto ranging meter.
How did you know which pins to check?
You can search online for the chip pinout diagram and see which pin get +Vcc or input voltage. IF you can identify the chip, that is. If it's not stamped or marked (and not all are) you're kind of on your own.
Exactly like this video was useless asf
when I replace a screen and a lcd cable with new ones and still i get no display, but the power is there because the chargin light on the right side of the chromebook comes on, what could be wrong? is it the motherboard, some kind of coding issue its having, or would it be an electrical issue? It would be hard to say without testing, but what can I test to eliminate any options ?
Thank you for the great videos.
so basically shake and spin the motherboard vigorously until it reflows itself and starts back working. thank you for this
don’t listen to the naysayers. I’ve learned more from this video as a starter video than I have from many books on other subjects. I did have to pause a few times throughout the video though to take notes on terms I was not familiar with. But this is a great starter video for someone who knows, nothing about diagnosing power issues on a motherboard.
so helpful, thank u!!
Motherboard repair is kinda crazy
1.There are alot of different kinds Volts such as 19V,1.3V,25V,6V etc
2.Some boards are easy to track for beginners while are harder eg.like cheap Laptop boards
3.Devices are not cheap eg. cheap Multimeter will not beep 😅
Just saying,thanks for the upload.We hope somedays we will understand this things 😂
Nice tool and good work 👍
Hi , Eric I have issues with monitor , when I plug HDMI it works fine but as soon as cable moves a bit screen goes bonkers and doesn't recognize HDMI , I blame motherboard and will be trying fixing it after watching this Vid
i would like to know what would you do if somewhere is not coming power, how do you exactly track where is the problem and how to fix
I have an ESP32 WROOM board and my power led got shorted and fused... I am not able to troubleshoot the problem... Can you give any ideas?
you forgot to tell us which dial you set the mulitmeter too? it would help?
If you're measuring voltage, you set it to volts. If your meter is not auto-ranging, then you set it to a high voltage range and read it. If it doesn't show then you set it to the next lower range until you can see what the voltage is.
If expecting to see 19Volt, where would you set it? If you have an auto ranging mm, set it to Voltage and you are good to go.
if you don't already know that I would suggest getting someone to help you or get someone else to fix it.
So is this symptomatic of a bad wire harnesses? Or a bad soldiering job?
very informative, very easy to understand, it was like teaching Calculus to an infant lol
Very good vision of your multimeter
Thank you for your feedback. I wanted to make sure you guys could see. I will hopefully get a digital one to connect to my computer soon =)
No, it was terrible. Could not see the readout. Either place it flat so the light could hit it or turn on the backlight (if it has one).
@@lapfix you wanted to make sure we could see it, hmmm.... you failed
Hi Guys,
I plugged my powered USB hub into my Yamaha keyboard USB device port. However, the power adapter for my USB hub has PIN revered, meant the positive to negative and vice versa. Now my USB device port stopped working. I think the USB IC may be burned or some resistors or capacitors burned. How could I troubleshoot it and replace the right part to restore my USB back in live?
Thanks in advance!
where can i get schematic for another motherboard?
0:31 You said that....I found the schematic for my welders pcb...click back on you videos just kidding, thats why I'm making this video " 😂 your mean for that
;)
Next Series you can do on thermal cam.
Make no sense. Way too confusing. You’re good with flipping board
How do know if the parts are exactly 💯 working do have an app in your comp to know all are working exact input and output is okey
Good morning, sorry to bother you, but I have seen that you are an electronics specialist and I was wondering if you could give me some solution. I have a Sindoh 3D 3DWOX 3D printer and when I inserted a USB flash drive to update the firmware, there was a power outage. Now only the Sindoh presentation screen is displayed and the image is frozen there. I have disconnected the printer from the power and even removed the internal battery from the motherboard but it remains the same. There is no way it does anything. It has been left frozen. I'm afraid the firmware has become corrupt. I have observed that the motherboard has some jumpers, I don't know if any of them have any use. Can you help me please? Any suggestions to force flashing the firmware? How can I find out which chip on the printer's motherboard is the EEPROM? Thank you very much in advance.
This looks like some great info, but I also feel a bit car sick now :(
when i plug my motherboard to electricity it start to do "ticking" sounds, I cant find out where is it coming from. Do you know what could be the problem? My notebook died middle of a game.
Before recording the next video, please switch to decaf!
No, not a beginner video keep up
Could you please perhaps release a video that teaches us how to trace the signal pathway from the adapter to the rest of the motherboard without referring to the schematics? Thank you!
I loved the speed.
yeah if there were only some way to get him to talk faster move his leads faster and shake the board around in his hands faster... because I think the way he is doing it now there could still be one person out there in the world somewhere that might have understood even one little thing about this video. And that is unacceptable.
ahaha you got me there at 0:46
Great video thank you.
Glad it helped
I have a game system PBC and when I plug the power supply to the wall outlet I have electricity in the power supply wire, as soon I connect it to the PBC there is no more power in the wire. why is that?? Thanks in advance and great video
bad power supply, either has a blown fuse or shorted cap
For teaching your test leads are confusing because they are both red and black. But good video thanks
Joaquin Phoenix 😍
Very helpful. Thank you.
Glad it was helpful!
Gaming monitor!? Motherboard... yes please
Thank you very much for this Video, helped alot. Turns out i was using the Multimeter wrong on the Chromebook Motherboard im testing lol. Im mostly self taught with help from Friends and RUclips. Thanks again and Happy New Year
Cool video man, I love to see more of these
subscribed in the first minute.
i dont even care if this is what im looking for.
Hei! Nice video.
Can i ask what type of gloves you using?
Would like to some gloves to work with power on units.
I found it very informative. Thanks!
I need help. With what I can use to replace this with Nv2wj 0.15 ohms 2w F047
Cool 😎
I need help. With what I can use to replace this with Nv2wj 0.15 ohms 2w F047
I don’t know what I can replace it with for I’m unable to find part. No color bands on it. Hi st looks pink and has like clay coating. And help be greatly appreciated as I hate throw say a 70” tv away
wasnt helpful to fast
youre jsut too slow
video starts at 1:07
Hilarious! Awesome! Thank you!
Great video. Thanks.
Thanks very much, My name is Livingstone from Ghana technically facing about LG4k oled shooting problem what can i do
Did you say moss pits?
he got me with the first part 😢
You look like that german guy who got confused by english insults
oh man please do not use 60fps if you are going to shake the board so much 🙁
Stop moving the board like that lol!
thx
NO! The flow adjusts to me. If the flow disobeys I shall replace the flow with my newly created flow in my own world I will create.
I dont think getting arcs from the power jack pads is normal, is it 😂
Seat your Multimeter reader to display reading better i can't see the reading.....
Excellent from where
Here
Take me
How do you like me
Now that you see man covered in trophies?
Slow down…. Your speed is getting me dizzy
I know it's probably more annoying to do this but try to slow the video down and have captions on. I know I'm pretty late.
that's why youtube has an embedded speed control in every video...
DRINK CAFFEINE...
HE IS ( NOT )
GOING FAST ENOUGH !
Dude is all over the place !!!
fine for me, maybe you’re just slow?
So cute, and great info!
I will never let Satan, the Angel fakes, the evil Pastors to dictate on the flow, I would rather boil the flow they influence like a soup and discard that to the dogs to drink and create my own flow that will adjust to me.
wow you talk fast lord lol
Got u
What were u reading at first
Please make it voice slow to understand what you speak
😢
👍🌟🌟🌟🌟🌟
Saddly you're both speaking too fast and barely are pointing or differentiating components.
I saw you point to the same chip at least 3 times and each time named a different component.
Eed more videos
You should redo this video.
haphazard presentation
I really don’t understand your video… I left more confuse than I came. Please try to show exactly what you are doing into details, less of the talk more of the visual representation
This literally tells us how to do absolutely nothing 🤦♂️🤦♂️🤦♂️
How so? He walked through step by step, physically demonstrating basic motherboard troubleshooting (i.e. power delivery testing). If at any point you find a point where power delivery is failing then you've basically isolated your issue and can focus your troubleshooting on more specific elements associated with the failure(i.e. input rails/output rails) or go about the repair once it has been fully isolated.
All troubleshooting is a logical process of elimination and subsequent repair. You analyze the operational mechanisms to understand the operational flow. Then you test each element's functionality to find the point of failure. Then you test the sub-elements of that point of failure until you isolate the failing sub-element and so on. You do this until you arrive at either the most minute failure (or point of falure) or until you find a point of failure that constitutes a realistic starting point for the repair process.
Some people might diagnose a PC to the component level, while others may diagnose individual components in an effort to repair the component as opposed to replacing it. Which is what he was doing in the video.
Either way though understanding what troublesooting is and understanding the functionality of the system/component/processes is key to successful diagnosis and repair. It's really as simple as that. A little baseline knowledge is all that's required to understand what he taught in this video. If anyone lacks this baseline knowledge then just go study a bit and the value of the information is clear.
100% CORRECT
Bro literally says how to troubleshoot. This is how they test for part that fail
please, stop moving and spinning board so fast
It's funny cause it's an Asus board 😂
Sorry dude, but you went too fast for me to follow. At 3 minutes, I couldn't see where your probes touched. Also, I know Jack-shit, so how would I know what to touch as earth? I have a Dell Latitude that switches off after 3 seconds, so I'd like to be able to test the mobo. I tried a new mains cable and tried a new cmos battery, but no different. So I guess I need to figure out the main board. I'd love to see an idiots guide for doing testing.
Joaquin Phoenix.
terrible video. didnt tell us how to find ground didnt tell us the setting for ur meter, u are darting about the board picking it up flipping round pointing at nothing. awful video
you clearly know your trade... you clearly have no skill at teaching that, unless of course you are not here to teach, then you are fine!
That's not basic. Give me a software that does all that at the click of a button, then i'll be impressed.