What was found
AFTER TAKEOFF, AT GEAR RETRACT, COULDN`T RAISE MLG PAST NEUTRAL IN SYS #1, SWITCHED TO SYS #2, GEAR RETRACTED NORMAL, SEVERAL SYS FAULTED IMMEDIATELY. CABIN PRESSURE REGULATOR #1, BOTH ENGINE PER MODES FAULTED, ATS 1&2 FAULTED, PITCH TRIM #1 FAULTED, ALL PROBE HEATS FAULTED, CAPTS ADC & FD, & FUEL AFT TRANSFER FAULTED. COMPLIED WITH ECAM DIDN`T RESOLVE ISSUES. QRH COMPLIED WITH, DIDN`T FIX ISSUES. RETURNED TO KMSY DUE TO WX IN KMEM. GEAR & FLAPS EXTENDED NORMAL DURING APPROACH. ACCOMP BITE OF POSITION DETECT UNIT. FAULT CODES 02, 23, 24 AS WELL AS RED BOX FAIL LIGHT. INDICITIVE OF INTERNAL CIRCUIT FAILURE IAW TSM. R & R FAULTY UNIT IAW AMM. TEST PASSED. NO FAULTS NOTED. A/C OK FOR SERVICE.