What was found
LIGHT ON EMERGENCY EXIT DOOR 21F FLASHING. NEEDS REPLACED VERIFIED LIGHT FLICKERING AT EXIT ROW 21F. OPENED AND COLLARED C/B ON THE P92 PANEL. VERIFIED EMERGENCY EXIT LIGHTING OPERATES NORMALLY. REQ MEL 3302B. TOMC APPROVED C/W MEL 3302B. PLACARD APPLIED. NO FLICKERING AT OVERDOOR EXIT SIGN/OVERWING HATCH HANDLE LIGHT, FLICKERING FOUND AT CEILING LIGHT ASSY AT EXIT ROW 21F. REMOVED AND REPLACED ASSY REF AMM 33-22-00. PERFORMED LIGHT TEST, ALL TEST PASS EXCEPT TURNING LIGHTS OFF; UPPER ASSY LIGHT STAYS ON WHEN TURNING LIGHTS OFF. TESTED DIFFERENT UPPER ASSY LIGHT; SAME ISSUE OCCURS WHERE LIGHT STAYS ON. FOLLOWED REF FIM 33-20 TASK 804. FURTHER TROUBLESHOOTING REQUIRED. CAPPED ASSY CONNECTIONS TO DEACTIVATE. REMOVE AND REPLACED ZONE TEMP CONTROL VALVE IN REF AMM 12-51-10. RESET CABIN LIGHTS REF AMM33-21-00. OPS CK GOOD,ALL LIGHTS AND MODES GOOD.