What was found
FLT 540 PBI-EWR, AIR RETURN TO PBI DUE TO LANDING GEAR NO UPLOCKED ECAM ON T/O, CYCLED GEAR NO CHANGE, NOSE GEAR AND RT MAIN INBOARD DOOR AMBER. GEAR STAYED DOWN. TECHNICIAN REMOVED AND REPLACED MLG GROUND OPENING CABLE PER AMM 32-12-16. OPS CHECK OK. AS PRECAUTIONARY T/S ACCOMPLISHED OPERATIONAL TEST OF L/G DOORS WITHOUT FALSE TARGETS PER AMM 32-31-00-710-002-01. ALL OPS CHECK OK. NOTE: CABLE REPLACED WAS P/N L32A321-350.