What was found
WHEN TROUBLESHOOTING INOP APU, DURING VOLTAGE CHECK OF FIM 49-40 TASK 816 THE WIRE LEAD SPARKED ON CONTACT WITH ELECTRICAL CONNECTOR D11114C SOCKET 55. PART OF THE LEAD FUSED TO THE INSIDE OF THE SOCKET. FORWARD LH FWD CARGO BULKHEAD REMOVED AS WELL AS THE LOWER BUNDLE TIE DOWNS ON THE BOTTOM OF E2-1 RACK TO PROVIDE ACCESS FOR THE BACK OF THE BLOCK. UNABLE TO REMOVE SOCKET 55 ON CONNECTOR D11114C.REMOVED LRU'S M279, M1653, M1710,M9 AND M1850. REMOVED E2-2 RACK ASSY F.O.M. PARTIAALY REMOVED CONNECTOR D11114C. CONNECTOR HAS DAMAGED SOCKET RETAINER. NEED NEW CONNECTOR P/N DPX3MA66565-252.