As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO APU WILL NOT START ISSUES AND PLANNED APU REPLACEMENT ON 20AUG10 IN SFO. PRECAUTIONARY, REPLACE APU CRANK CONTACTOR RELAY. FOUND WIRE HARNESS FROM FIRE WALL TO STARTER BURNED. ALSO FOUND DAMAGE TO HARD LINES ON APU, AND STARTER BURNED. OPERATIONS AND LEAK CHECK GOOD.