What was found
AT CRUISE; A NOTICEABLE ELECTRICAL SMELL WAS NOTICED THROUGHOUT ENTIRE PLANE. SHORTLY AFTER; TRANSFER BUS LIGHT ILLUMINATED; FOLLOWED BY SOURCE OFF LIGHT; FOLLOWED BY DRIVE LIGHT - ALL CHECKLISTS WERE FOLLOWED AND COMPLIED WITH<[01] WHILE PERFORMING FIM TASK 05-51-56-200-801 SMOKE OR FUMES IN CABIN (CONDITIONAL INSPECTION); ISOLATED THE SMELL TO THE EE COMPARTMENT. FOUND #2 GCU FAILED WITH EXTREME BURNED ELECTRICAL SMELL. CHANGED #2 GCU PER 24-21-81 AMM. OPS CHECK NORMAL NO FAULTS FOUND.;[02] CORRECTED VALUES.