As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSULATION FOR (6) TERMINALS ON THE BACK ON CB 51 CHILLER AT AFT GALLEY ARE HEAT DAMAGED AND BLACK IN COLOR. PULLED PANEL ASSY FOR ACCESS. CUT OFF OVERHEATED TERMINALS TO PROVIDE SPECIMENS FOR BOEING INVESTIGATION. REPLACED CB (C51) WITH TERMINALS. RETERMINATED WIRING 40482 AND CONFIRMED PROPER TORQUE ON ALL THREE CHILLER CB'S, BOTH FEED AND LOAD SIDES. CHECKED C71 CHILLER OPERATION. OP CHKS OK.