As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU POWER CABLE (W236-006-1-0) HAS A CORRODED SPLICE CAUSING OVERHEAT AT BS 1783-1800 IN EMPENNAGE COMPARTMENT BELOW HORIZ STAB RIGHT SIDE. REMOVED AND REPLACED HARNESS ASSY. INSTALLED ASSOCIATED SPLICES FOR HARNESS. OPS CHECK OF APU GENERATOR GOOD.