Schem/BV wanted: Acer Z3-720 Bristol23-H81 MB not turning on but cooking the 3V3

[inflex]

Sorry if not in the right place, honestly couldn't find a "general PC motherboard repairs" ( as opposed to "Bad caps".

23" Acer All-In-One mainboard.

Seeing a hefty current go over the 3V3-Always line, causing a 0.4V drop across the inductor.

Seeking schem/boardview for this motherboard, guessing I probably won't have any luck, google barely has anything showing up.

[inflex]

Re: Schem/BV wanted: Acer Z3-720 Bristol23-H81 MB not turning on but cooking the 3V3

No need for the data any more ... found the fault. PCH was being a hotplate. It's deaaaard.

[piernov]

Re: Schem/BV wanted: Acer Z3-720 Bristol23-H81 MB not turning on but cooking the 3V3

Any idea of what caused this? What's the sSpec of the PCH?
This is fairly recent stuff and it can't be liquid damaged so that's interesting…

[inflex]

Re: Schem/BV wanted: Acer Z3-720 Bristol23-H81 MB not turning on but cooking the 3V3

I put a video up of it Piernov, you know where to find it (usual channel).

Not sure what's caused it. Client said it was "fine" and then "not". No liquid damage visible, looks like the die itself has had a fault perhaps.

My wrong on the title of this thread btw, it's a Z3-710.