I fried my STLink v2 yesterday, by putting the 12 volt rail into pin 1 (target Vcc).

Funny thing was it actually kept working for a few minutes.
The pcb smells of component charring and I suspect a resistor that I can no longer read the value of. it measures about 30-40Ohms. I am hoping this is the only problem.
So a schematic would be useful. Or even a photo of the main board.
I have looked at the discovery board circuits but I am not sure if the st link is consistent with them.
Also I am now using the F3 discovery for programming while my real programmer remains broken.