What was found
AFTER TAKEOFF GOT EICAS MSGS TAILSKID AND TCAS DURING CLIMB. TAILSKID MSG WENT OUT AND GOT GEAR DISAGREE EICAS MSG ACCOMPANIED BY GEAR SYNOPTIC NOSE UP AND MAIN GEAR INTRANSIT. RETURNED TO LAX. CHECKED OUT WIRING AND GEAR HANDLE SWITCHES THROUGH TO PSEU PROBLEMS FOUND. REPLACED R33 DIODE, PRECAUTIONARY REPLACED PSEU-JAC A/C SWUNG GEAR CHECKED OK, NO FAULT MSGS. REPLACED SYSTEM 1 S 244 NOSE GEAR NOT COMPRESSED SWITCH. RETRACT AND EXTEND LANDING GEAR, OPS CHECKED NORMAL.