What was found
SLATS & FLAPS SYSTEM 1 AND 2 FAULTED WHEN THE HANDLE WAS SELECTED TO 15/20. FLAPS WOULD RETRACT TO 0 WHEN SELECTED, BUT ONLY EXTEND TO 15/15 WITHOUT A FAULT INDICATION. REPLACED A FAULTY SOLENOID MM 27-54-33-04. OPERATED FLAPS AND SLATS FOR 6 CYCLES WITH BOTH ENGINES RUNNING, NO FAULTS ON EITHER SFCC, OR ON OVERHEAD AND NO ASSYMETRY LOCKOUT. SYSTEM OPS CHECKED NORMAL.