What was found
AT APPROX 00:00Z GOT A MASTER WARNING LT W/A LEVEL 1 EMERGENCY POWER ON ALERT. COMPLIED W/QRH. SELECTED EMERGENCY POWER SWITCH TO OFF. GOT LVL 1 L EMERGENCY AC BUSS ALERT. SELECTED EMERGENCY POWER SWITCH BACK TO ARM , STILL HAD EMERGENCY POWER ON LEVEL ONE ALERT. CONSULTED W/GOC AND MOCC VIA SAT. BATTERY VOLT NOW DOWN TO 24V -51. WHEN VOLT DROPPED TO 22V (AMBER) DEPLOYED ADG IN ELEC BATTERY CHARGED UP TO 32V, ELECTED TO DIVERT SEA. ON NEXT POWER UP, EMERGENCY POWER TEST FAILED. REF WDM 24-61-11, REMOVED AND REPLACED LEFT EMERGENCY CONTROL RELAY (R2-17) PER SMP. REF AMM 24-24-00-5 AND EPCU R-T-S REF AMM 24-08-01-5, ALL TEST PASSED AND CHECKED NORMAL. DID NOT DUPLICATE FAULT, FINAL FIX REMOVED AND