What was found
ENROUTE, PILOTS REPORTED AN EMERGENCY BUSS OFF LIGHT ILLUMINATED IN FLIGHT. EMERGENCY ACTIONS WERE TAKEN. MAINT WAS DISPATCHED TO THE ACFT AND SECURED A WIRE HARNESS IN THE OVERHEAD CIRCUIT BREAKER PANEL. MAINT CHECKED THE TORQUE OF THE RCCB AND FEED WIRING HARDWARE IN THE LT DC RELAY BOX AND PERFORMED FUNCTIONAL CHECKS OF THE AFFECTED SYS. OPS CHECKS WERE GOOD. THE ACFT WAS RAN, TAXIED, AND NO DEFECTS WERE NOTED. ALL IAW MM 24-51. AN OPS CHECK FLIGHT WAS PERFORMED AND THE OPS CHECK FLIGHT WAS SATISFACTORY. UPON ENTRY INTO A SCHEDULED MAINT CHECK MAINT REMOVED AND REPLACED THE EMERGENCY BUSS CIRCUIT BREAKER CB 0470 P/N MS25361-80 PRECAUTIONARY DUE TO EVIDENCE WHICH APPEARED TO BE A POSSIBLE COFFEE SPILL PREVIOUSLY IAW MM 24-52. ALL CHECKS WERE GOOD.