As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VISUALLY SAW SMOKE IN THE VICINITY OF THE APU PANEL ALONG WITH A STRONG SMELL OF ELECTRICAL FIRE. NOTE-NO FIRE WAS SEEN OR INDICATED. REMOVED OVERHEATED RESISTOR PN RH50-68 OHM AND INSTALLED NEW RESISTOR PN RH50-68OHM IN STALL VANE HEAT ON (DR) PANEL. PERFORM OPERATIONAL CHECK OF THE SYSTEM, FOUND NO DISCREPANCY AT THIS TIME. WORK PERFORMED IAW MM CHAPTER 31-20-05.