ฝัง
- เผยแพร่เมื่อ 22 ม.ค. 2023
- Hey everyone, today we are going to be looking at troubleshooting a motherboard. Nothing fancy, no schematics, just basic diagnosis
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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.
Try to secure the board in one place and just point. It's very distracting when you move the board all over.
Thank you this really gave me a bigger understanding of how motherboards are powered.
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.
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.
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 TH-cam. Thanks again and Happy New Year
Nice video, just you need to shake the board more vigorously so we can see it better without vomiting:).
Very helpful. Thank you.
Glad it was helpful!
Nice tool and good work 👍
Great video thank you.
Glad it helped
Thanks for the knowledge. Where can i get the full video?
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).
subscribed in the first minute.
i dont even care if this is what im looking for.
I loved the speed.
Hilarious! Awesome! Thank you!
Bruh, the beginning got me so discouraged until your broke the ice 😂 I was bout to say screw it
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.
Thanks very much, My name is Livingstone from Ghana technically facing about LG4k oled shooting problem what can i do
So cute, and great info!
This looks like some great info, but I also feel a bit car sick now :(
thx
Cool 😎
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?
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?
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
Next Series you can do on thermal cam.
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 😂
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.
Didn't realise Roger Federa was good at electronics as well as tennis
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
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
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.
Before recording the next video, please switch to decaf!
video starts at 1:07
I dont think getting arcs from the power jack pads is normal, is it 😂
Make no sense. Way too confusing. You’re good with flipping board
Eed more videos
What were u reading at first
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?
wasnt helpful to fast
youre jsut too slow
Stop moving the board like that lol!
You should redo this video.
Please make it voice slow to understand what you speak
😢
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.
Very disorganized brain. Poor teaching ability.
This video is totally waste of time! Absolutelly useless...