What was found
THE AFT LOWER CARGO DOOR WOULD NOT CLOSE ELECTRICALLY. THE AIRPLANE WAS REMOVED FROM SERVICE (GROUNDED) AND THE AFT LOWER CARGO DOOR ELECTRICAL SYSTEM'S WIRING WAS INSPECTED. IN THE FORWARD LOWER CARGO COMPARTMENT, DAMAGED WIRES WERE FOUND BEHIND A WALL PANEL. SOME WIRES APPEARED BURNT. THE WIRES WERE REPAIRED. THE SUSPECTED CAUSE OF THE DAMAGED WIRES WAS INADEQUATE CLEARANCE BETWEEN THE WALL PANEL FASTENER AND THE WIRE BUNDLE.