What was found
SHIP 5811 FIRST CLASS MONITORS AT SEATS 1 C&D, 2 C&D, AND 3 C&D FAILED. AN ELECTRICAL BURNING SMELL WAS OBSERVED WHICH QUICKLY DISSAPATED. CORRECTIVE ACTION: REMOVED AND REPLACED DATA HARNESS. REMOVED AND REPLACED SEB TO SDU HARNESS. JUMPED IN HARNESS. SEB TOOK DATA, READDRESS PASSED. SEATS 1CD-3CD OPS CHK NML. REMOVED HARNESS, INSTALLED PER ERA 612988-14. 1CD-3CD OPS CHK NML WORK IAW B757 AMM 23-32. (9628728)