What was found
WHILE ACCOMPLISHING TC 24-100-00, STANDBY POWER WOULD NOT TURN OFF IN THE OFF POSITION. "STANDBY POWER OFF" LIGHT WILL NOT ILLUMINATE AND DOES NOT DROP OFF. GROUNDED - YES. REMOVED AND REPLACED STANDBY POWER CONTROL UNIT. NO HELP. REF AMM 24-34-11/401. APPLIED AND REVERSED ALTERNATE DEACTIVATION PROCEDURES PER CH 5 SECTION 05-07-01 TABLE 3 ITME #1. H. KINTANA 26885 09/13/23. SUSPECT THAT THE DUAL BATTERY RCCB MAY BE BAD REF WDM 24-31-12-1 AND 24-34-11-2 H. KINTANA 26885 09/13/23. OPENED AND TAGGED 3 CB'S. REMOVED STATIC INVERTER RCCB BASED ON WDM 24-34-11-2, STATIC INV RCCB MORE DIRECTLY RELATED TO STANDBY POWER SYS. E. OEI 60950 09/13/2023. INSTALLED STATIC INVERTER RCCB REF AMM 24-34-31/401. ALL OPS TESTS GOOD. REMOVED 3 TAGS AND CLOSED 3 CB'S. C/W TC 24-100-00. NO FURTHER DEFECTS NOTED.