DELL VOSTRO 15 3568 - NOT POWERING ON
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- Follow along with me as I go through the troubleshooting of a DELL VOSTRO 15 3568 motherboard, step by step, to see if I can get this motherboard back working again. Hopefully we all learn something.
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nice analytics here. Nice to see success. have a good one.
Great video, thank you for share with us!
very informative. thank you.
Great
It was already fair. We urgently need a victory. Excellent work. A sincere congratulations. Thank you for your time and sharing. All the best.
Great repair, and explanation.
If you want to go the extra mile, on the now working laptop check the gate voltage, as it should be 4v or so higher (for n-type). If it not, it is often the driver IC. If the voltage on the gate is not high enough, the mosfet is not fully turned on and will heat up, and die, or fall off the board if it is mounted upside down. So in a few weeks time it may become a return job.
Hey Karl, I was thinking about doing a follow video with the correct voltages after repair. The Dell motherboard videos seem to do much better than the others, so I think it might be worth while doing.
@@therepairshare673 Well, if you measure the coils, they are often similar voltages from model to model, but amd do vary from intel due to intel's built-in graphics cards and cpu.
For mosfets have about a 4v(upward) voltage difference, similar to the 0.6v(upward) from base to emitter on a transistor.
Dell was a big seller. Think in the UK corporate market has been taken by hp.
We once were a Dell shop, then Tosh for 5-ish years, but for the past 10+ years HP laptops are the thing, and guess we must have got over 20000 of them, but the aged ones were under lease, unsure of the new ones. Eventually they will be released by the leasing company through various outlets, often from ebay
@@therepairshare673I would really like to see that, as it will help my fault finding skills, to know what voltages to expect when a board is powered up.
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Already half typed this, but it vanished.
Thought about this last night, Me and only me, I would finish off what I have got left board wise, because there is only so many times you can say the same or similar thing, add the voltages too them if you want. You may need to feel that you have to move on, and the current status maybe is becoming stagnant?
Myself, I would stop the current format. Instead, I would set a goal that is virtually beyond grasp like "By the end of this year, I want my repairs to have made enough money to buy this house (picture of for-sale house in my town), or something like it" you may not be able to do it in a year, the tax man will eat into your profits, so 50% will go to him in some way as a sole trader. Show the repairs on video plus profit and losses. Show the Instagram, Facebook, Twitter and other social media ads etc. you use, and let us watch how your business grows, by recording all your fixes, and failures
This will still encourage your current audience, hopefully lift the aspirations of people who are broke in a way that they might be able to try it themselves. Business minded people may visit just for curiosity too. Finally, it gives you PCs and laptops etc to fix, but rather than you looking, buying them, you are fixing people's stuff and making money. No more board scanning and marking too
@@karltest1314 Hi Karl, thanks for taking the time to type this up... (twice!!).
I have a full time job, so I'm not under pressure to make money out of the channel. I have set a target of 10K subscribers, and I will re-evaluate the channel if it should hit that. Until then, I will keep making videos, as long as I have the time.
Hi pro, incase you dont have powerbutton, safest way to turn on is by keeping red probe on ground and running black probe on powebutton connector while keeping multimeter in diode mode.
Thank you. I learning from you alot. And can do some Mainbord by myself. Next time can you making videos about check CPU die or not on Mainbord laptop
Nice job, very interesting as always. 2 questions please....1/ On diode mode why don't you use black probe on ground ? 2/ How can you turn on this board without a PSID on Pin 4 of the DCIN ? (sorry for my bad english)
Hi Pascal, your English is very good.
1/ I was taught to use the red probe on ground and measure with black probe. I get asked this question a lot so maybe I need to learn more and teach why.
2/ The PSID is not critical to the powering on the laptop, but IS critical to the charging of the battery.
To help answer your question for /1 I actually had the same thought when I first started as to why you would use a red on ground and not the other way round. I gradually found out diode mode works by measuring a voltage drop across a path from point A where the black probe is, to point B. The lower the number 0.000 the lower the voltage drop which could indicate a short in a Circuit.
If there is a break in circuit or the path doesn't go anywhere, you will get Open Line (OL).
Bear in mind some paths in a circuit such as CPU lines that we measure in Diode mode, will look like they are short due to the low number for example 0.020v however this is normal.
I found a video here th-cam.com/video/m_gD6hPzipU/w-d-xo.htmlsi=LbJPOXFL_SXjk3Of which gives some understanding of how to use Diode mode, but I would definitely vote to get a video from Jon here on multimeters and how to use them in laptop repair for sure 👍
Forgot to add, Diode mode is the safer option to check for shorts in circuit than initially injecting voltage from power supply unless you are certain of the fault and voltage injection will allow for you to locate it quickly. 😊
@@Bvetube101 Now i understand why...Thank you !
Hi, nice fix, what do you use to scan in the image of the Motherboard? Thanks in advance 👍
Hi David, I scan the boards with an Epson V600 flatbed scanner. I use Photoshop to adjust the colour, and sharpen the image.
@therepairshare673
Thanks for replying.
Nice, the images are very detailed and all the components are in focus. Good Job 👍.
how do you know when to use diode or resistance mode.
wish my board would do that lol !
Sloppy but not good😂
very informative. thank you.