What was found
FLT 57 - LGW - SEVERAL C/B'S POPPED AND BOTH THE NR 1 AND NR 2 GEN'S HAD NO VOLTS AND NO FREQUENCY WHILE EN ROUTE FROM ORY TO EWR. THE CREW WAS UNABLE TO RESTORE EITHER GEN AND THE A/C WAS DIVERTED TO LGW WHERE IT LANDED W/O INCIDENT. ALL TRIPPED C/B'S WERE ASSOCIATED WITH AC BUS NR 1 AND NR 2 AND WOULD NOT RESET. MX FOUND ALL PIN OUT WIRES SHORTED TO GROUND. THE SHORT WAS TRACED TO A BURNT OUT WIRE BUNDLE IN THE FWD CARGO CEILING AREA. THE WIRING WAS REPAIRED IAW STANDARD PRACTICES CHAP 20 OF MM. OPS CHECK OF THE NR 1 AND NR 2 GEN'S AND ALL ASSOCIATED SYSTEMS WAS GOOD. S/D - MX ALSO FOUND A STICKY LIQUID SUBSTANCE ON C/B'S OF LWR MID PNL. THE C/B'S WERE FREED, AND ANY BROKEN IN PROCESS WERE REPLACED.(M)