2879 no power on

[Bohmmen]

Owners daughter inserted a 3.5mm charger in the headphone port with the other end connected to a usb port.
Computer died!
It has green light, pp3v42_g3h and ppbus_g3h.
What do i check?

 

[aprendiz]

Diode mode on L7260?, could be a dead Q4690.... Also remember, you should use power pads or keyboard to power on this board....

 

[Bohmmen]

L7260 is 0.450 in diode mode, same as other boards.
Pin 5 and 8 on Q4690 have 3,3 volt. Same as working board.

 

[Bohmmen]

Resistance to ground on pp3v42_g3h is 0.993 k. I think that is to low.

 

[dukefawks]

That is way too low, usually dead MCP.

 

[Bohmmen]

Ok, usally? What else?

 

[dukefawks]

Anything else on 3V42 rail, but lets be real it is always the MCP with these.