What was found
THE YELLOW ELECTRIC PUMP WILL NOT RUN WHEN TRYING OPEN THE CARGO DOOR. FOUND RELAY 24 GX BURNED, THE TERMINAL LUG X1 WAS BURNED OFF, WIRE FROM X1 WAS BURNED INTO BARE WIRE IN WIRE BOUNDLE AS WELL. IAW AWM 29-24-01, PAGE 01. RELAY PANEL 107 COVER IS REMOVED. REMOVED AND REPLACED RELAY 24GX AND CB 7GX IAW AWM 29-24-01 AND WIRE 2924-0012 REF ESMP 20 AND AWM 29-24-01. INSPECTED WIRE BUNDLE OF SAID WIRE CHECKED GOOD NO OTHER DAMAGE TO ANY OTHER WIRES. BEFORE APPLYING POWER CHECKED WIRES FROM RELAY 24GK AND FOUND TERMIAL L2 B PHASE AT @ 143K OHMS WHERE L1 AND L3 WERE OPEN PROBLEM APPEARS TO BE ON THE LINE SIDE OF CB 23GX IAW AWM 29-24-01. OPS CHECK AFTER PROBLEM FIXED . INSPECTED WIRING AND RELAYS FROM RELAY 2XX TO RELAY 161MU AND THEN TO CIRCUIT BREAKERS 3M,4ME,37ME AND 1LQ IAW AIRBUS WIRING DIAGRAM AND FOUND HIGH OHM RESISTANCE IN THE WIRING RUN FROM CIRCUIT BREAKER 1LQ TO THE LAV LIGHT, REMOVED LAV LIGHT BULBS AND HIGH OHN RESISTANCE STILL PRESENT. PERFORMED WIRING CHECK REF AWM 33-24-01, RESISTANCE MEASURED COMING THE BALLAST 144K OHMS. OPERATIONAL CHECK SATISFACTORY REF AMM 29-24-11-04-0.