What was found
AFTER T/O GOT YELLOW HYD SYSTEM LO PRESS ECAM, QUANTITY WAS FINE, PRESSURE READ 50 PSI. REMOVED AND REPLACED YELLOW HYD SYSTEM SOLENOID, OPERATED DEPRESSURIZING VALVE. REF: 29-11-32-4. RAN ENGINE, SYSTEM OPS CHECKS GOOD. RUN PERFORMED.