What was found
GATE POWER FLUXED AND DROPPED OFF LINE AT GATE 393 CAUSING THE CARGO BOTTLE 2 A, B, &C TO FAULT, AND WILL NOT RESET WITH OPS TEST OF CARGO SQUIBS. LATCHED FAULT WITH MX MESSAGE'S 26-40781, 26-40783, AND 26-40785. FOUND 1 CONNECTOR PLUG RETAINER MISSING AND 1 READY TO FALL APART. ALL 3 SUIBS ARE BAD. REPLACED SQUIB CONNECTOR PLUGS ON 2A, 2B, AND 2C IAW FEC 777 SWPM 20-63-00. R & R 2A, 2B, AND 2C FIRE EXT BOTTLES W/REF TO 26-23-01. ALSO IAW AMM 26-23-01 HAD TO REPLACE LWR FIRE EXT FILTER/REGULATOR W/REF TO AMM 26-23-04. ALL MSG'S CLEARED AND TESTS PASSED. ACFT OK FOR SVC. FINAL CLOSED.