What was found
ON CLIMBOUT, RECEIVED AN AVIONICS SMOKE ECAM, WITH NO SMOKE DETECTED IN COCKPIT. RETURNED TO DEPARTURE. PERFORMED OPS CHECK IAW 26-15-00-05. ALL OPS NORMAL. R & R DETECTORS 11WA, 12WA,13WA AS PRECAUTION, OPS CHECKED NORMAL IAW MM 26-15-00-05. OK TO CONTINUE.