It seems I have been fixing 1200’s with blown traces a lot these days. In my opinion, this is something that shouldn’t be happening as often as I see it. Remember when you are installing things on the clock ports in this machine that it wasn’t ever intended to be used in the way we are using them. USB devices, fast serial ports, and other things can draw a lot of power. In the case of this one, it was a Subway USB controller that when it was connected wrong and the 12V line from the floppy plugged in caused a short and blew the line. The only way to repair it was by using a jumper. Fortunately its all on the bottom of the board and not seen once installed back into the case.