Minis Forum UM690 mini PC - no power, board repair - This looks like a small beautiful mini PC
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- Опубликовано: 16 авг 2023
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Nice repair and saving the customer's pc.
Thank you very much our teacher SORIN. thank you for all
great video sorin and a lot of useful info for us laymen .....
i learn alot from you. Thank you
Nice one sorin❤thanks for sharin
Good job mate 👍
❤I love this man , your very interesting, and hard working, thanks for your hard work buddy 👍.
Nice one Sorin ❤
So good I watched it twice
Very good job
this is a nice mini pc
super merci
Très bien !
It would've been nice if you'd replaced that cap, it was right next to a power supply. In the future that PSU may fail. Probing with an oscilloscope on a PSU input without the input cap mounted you can observe big voltage spikes like 5v in magnitude. (depends on PSU PWM frequency). Those spikes are attenuated fast on the rail after a distance of 3-4cm of cooper track but it will harm that local PSU, or analog audio amplifier if is somewhere near by. Having an oscilloscope can make you understand that no cap is on a board for no reason.
Generalissimo Sorin sending poor capacitor to the gulag 😪
In the next video, part 2.
Normally he replace the cap with Apple 🦆 one but not in this video 😊
Would you need to identify the capacitor? Schematic etc
@@Dohcom1 A 10uF from any laptop main power rail will do.
nice one!
Sorin, thank you for the video! Can you please share the exact types of the replaced components? Thx!!
It's a really capable light gaming machine too.
Great video!
Nu trebuie inlocuit si condensatorul mic?
Good job...
Sorin saving caps for future 😂
The noisy fan is at the top part haha
I'm a fan of passive cooling, airjets, and big silent fans.
Modding is always an option, until manufacturers catch up and technology gets even more efficient and advanced.
Manufacturers usually always make it smaller, so that it makes either noise and/or thermal throttles, instead of just using a decent oversized heat sink and fan...
This makes more sense for a laptop, but for a mini PC? It's still about cutting costs. Silence lovers are forgotten.
Come to Besiktas,Sorin...
I admire your repair and diagnostic skills, but it bothers me that you never bother to replace fuses or capacitors.
👍👍
Hi Sorin. I have an x60s and got a fan error, laptop turning on got picture... But I dont have original heatsink and fan because I destroyed them in a DIY project and its expensive to replace. Problem is I tried multiple fans from multiple laptops allingning the pins exactly with original. Coolers are working but still got that error and laptop shuts down. You think they have a chip on original cooler that communicates with the motherboard? Preventing me using other coolers?
I bet you can game off that if you use the PCI card to a video card. Probably work fairly well
You can pretty much do it without an egpu, as long as you make concessions. I'm currently enjoying Cyberpunk 2077 on mine: low/med settings, 1080p, locked to 30 for smoothness.
It actually looks quite nice, and plays surprisingly well.
Hi.. can you please provide the details of the MOSFET which was replaced
64 gigs of ddr5 wow
Ryzen 9 what a beast
But not powerfull as you thinking
@@NvArya why?
I love the LOL
👌👌👍👍
Worth being careful about metal thermal "paste", that stuff will literally turn solder into 10C melting point solder depending on alloying concentration!
Removing a cap with hot station......it's a good sign, instead of snapping with tweezers, so lets hope to it back some caps LOL......hmmmmmmmmm😊
wow, that was Ryzen 9? amazing
how do you remove the board i struggle with it
Salut Sorin, scuze de interventie, dar se aude un "tziuit" in fundal, poate ai poti sa remediezi in video-urile viitoare. Mersi !
Sir can you teach me exactly how you open it?
🥰
Daaamn, I can't find out how to disassemble similar mini pc correctly. Came here to check it but this part is skipped and characterized as painful. Any tips?
did you ever find anything to help you remove the board? I need help ASAP
@@therhetorician4683 kind of a lame video without the board removal instructions.
Thank you, teacher, but those 1st 2nd mosfet are going to take me crazy, every time I say I understand them, and now, the mosfet is getting hot because it is good, and those 24V at the gate 😅
In a circuit the part that have the biggest resistance it will get hot. Normally a FET like that has an internal resistance of about 0.05 ohm. The second FET being shorted he injected 19v on the FET's driver and this in turn raised the voltage on the good FET gate raising his internal resistance. (being a P channel).
And for the part with 24v, Sorin though that the FET is a N channel. Voltage of a FET gate being measured between Source and Gate, and for a N channel TTL it would've been 24-19=5v. In reality it was a P channel: 4-19=-15v (negative voltage)
thank you very much @@stefanputureanu9296
@@stefanputureanu9296 where's the -15v ? He measured it was like 4.7V . Please explain why the voltmeter showed 4.7V instead of -15v, also does FET stand for Mosfet or it is a transistor I understand Moset is a transistor but usually we call it Mosfet, is it different than laptop mosfet ?
Sorin next time check short between gate and drain of the mosfet.
Does anyone have any idea what MOSFET code he used?
(TPC8031) Is this the n channel mosfet that he replaced? I got little confused at the end, P or N Channel?
N I think
It is P channel (is a Chinese FET). Gate voltage is measured between Source and Gate. Having 19v on Souce and 4v on the Gate that means the gate voltage is -15v. If it was a N channel, on the gate should be around 24v for TTL level N channel FET(24-19=5v), and 31v for a normal N channel FET(31-19=12v).
ahhh sorin we want wire on that mosfet, we dont need that mosfet
How can I fix a Lenovo yoga 11e can not turn on bt it show blue light on the fn button and f1,f4 show red light
I don't think it's silent, it's got a fan on the back :)
Those mini pc are very silent, I have 3 HP prodedk 2 i3 and 1 pentium Gold, there have a fan and can’t hear there fan at all.
@@Trustsimo07 I bet most of the minis make noise with high loads and in hot rooms. This is why I'll choose very well, and I always consider modding to make it near silent.
Is there a chance HP and DELL choose well sized heatsinks and fans to control noise? vs. other mini PC brands. There's a lot of variation in the mini pc spectrum when it comes to CPU power as well...
Noice
What is to learn from this video? Well..... I learned if you remove a shorted mosfet the new one will just jump right in place no soldering needed, tadaaaa! lol jk I really enjoy your videos, Thank You!
Hello🤝👍👍👍👏👏👏👏👋👋👋👋👋
How come you already had replacement mosfet?Which means you knew about faulty component before vid :D
Every P channel FET from any laptop will do 😉
@@stefanputureanu9296not common P channel... but probably can be found on some donor board
@@laboratorioassembler Is a Chinese one for sure, hard to find a pdf for this one. Chinese parts usually use existing part numbers but they have nothing in common with the real ones.
Doesn't matter if he did know. He is teaching people that would normally replace a good Mosfet for nothing.
The one getting hot was the good one. The second one was short. And the cap was short.
There is no hot glue or proper calibrated wire. Unlucky day.😀
scared me when you popped off the CPU cooler...all that liquid metal cooling....they've had a bad time of that oozing all over the place
The only benefit of a mini pc is that it is small.
A nice fix, couple that to an external graphics card and if bought cheap faulty a bargain
There is some kind of beeping annoying sound in the background.
Crapacitors
What causes these failures? How to avoid them? Build your own instead of made in china no brand MB's?
of course, capacitors getting bad because they're not needed and getting bored... 🤦♂
i mean, is it SOO hard to get a SMD cap book and fuckin replace it and not being dodgy?
i repair so many old boards from the 2000s with capacitor plague... maybe it's enough to just remove them instead of recap... seems the manufacturers put those components just because they have too many in stock...🙄
A pity you edited out the replacement of the mosfet as it was essential to understand in this repair it was actually a p-channel io an n-channel mosfet ! You probably first fitted an n-channel and it was not working. Please also replace the capacitor, it is there for a reason! Goodbye...
Maybe he takes a lot of time looking for same MOSFET . So he forgot to record it.
Still more upgradable than a Mac - lol -.