What was found
WHILE ACCOMPLISHING CENTER LIGHTS CHECK, FOUND FWD ENTRY EXIT SIGN ADJACENT TO F/A SEAT INOPERATIVE. ACFT GROUNDED. R & R FWD ENTRY EMERGENCY EXIT SIGN. REPLACED ASSY TWICE, NO GOOD. REF AMM 33-51-01-960-802. REF WDM 33-51-21 FOUND BAD GROUND APPROX 500 OHMS AT D3664. RETERMINATED, NO HELP. FOUND GD3782 GROUND BLOCK CORRODED. GROUND BLOCK 3782 REPLACED, FWD ENTRY EXIT SIGN OPS NORMAL.