Acer Aspire AIO Z1-621g Motherboard

[onlyseries]

Hello all,
the motherboard have 3 usb ports, two of it have power but no data connection, the other does not work at all.
I tried to remove the USB port, maybe, in short circuit, but the others still don't work.

Does anyone have the schematic for the motherboard in question?

Motherboard: DAUILMB60C0 REV: C

Thank you.

[SMDFlea]

Re: Acer Aspire AIO Z1-621g Motherboard

Did you mean DAUI2HMB6B0 ,Quanta UI2H. If it helps the USB Hub IC is a GL850G

https://***********/threads/quanta-u...hematic.27034/

[onlyseries]

Re: Acer Aspire AIO Z1-621g Motherboard

Mine it's DAUILMB60C0 https://ibb.co/n5c7S8
But I think they are similar.
Thank you to the link!

Could the 2 usbs work again by replacing the IC?
Thanks in advance

[SMDFlea]

Re: Acer Aspire AIO Z1-621g Motherboard

It depends where the usb`s get their 5V from.If you do have the same hub the D- and D+ go to the GL850G. Heres a link to the GL850G datasheet, check the pinouts https://cdn.badcaps-static.com/pdfs/...40018831d9.pdf

[onlyseries]

Re: Acer Aspire AIO Z1-621g Motherboard

I tried to check, but I couldn't figure out whether the integrated works or not.
In any case, thank you for your suggestion.

To try to solve the problem with the USB ports, if I buy a mini pcie adapter (like in the picture), could it work?
Thanks you in advance.



P.S. Only now I found the time to check

[onlyseries]

Re: Acer Aspire AIO Z1-621g Motherboard

Sorry for the double post.

Since I started the post, I'm still fighting with this motherboard.
The idea of the mini pcie adapter did not work.
So I decided to find a new motherboard.
I bought a used one at a low price, sold as working, but unfortunately it didn't work.
Now I don't really know what to do, I'm not an electronics expert, but I wanted to get involved in this situation and now I would like to solve at any cost, but in my area I don't really know who to go to.

The new motherboard doesn't turn on, so I tried to look for some possible short circuit. Maybe I detected 2 short circuit mosfets.

Could someone help me understand what the problem might be? If changing the two mosfets can you solve? Or if I should try to repair the other motherboard?

Thank you very much and I hope for your help.