Minis Forum UM690 mini PC - no power, board repair - This looks like a small beautiful mini PC 

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.

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.

Ryzen 9 what a beast

But not powerfull as you thinking

@@NvArya why?

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 ?

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.

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).

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...

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.

Maybe he takes a lot of time looking for same MOSFET . So he forgot to record it.