What was found
STRONG SMELL OF BURNING ELECTRICAL PRESENT ON GROUND WITH PACKS OFF APU OFF AND NO GROUND. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN MAINTENANCE EVALUATE. CALL TOMC. METER INITIATED FOR WITH VENDOR RELATED WORK ORDER 000000001802018 AND PRTR STATIC INVERTER REPLACED PER AMM 24-34-21-400-801. STBY POWER SYSTEM OPS NORMAL PER AMM 24-34-00-710-801 STATIC INVERTER REPLACED PER AMM 24-34-21-400-801. STBY POWER SYSTEM OPS NORMAL PER AMM 24-34-00-710-801 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1247223 SN OFF 0582 INVERTER, STATIC OFF 58-2430-9-0001 0582 ON 58-2430-9-0001 1414.