As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ARRIVED AT STATION WITH A DEFECT LOG REPORT OF THE FORWARD LAVATORY NOT FLUSHING. TROUBLESHOOTING FOUND THAT 4 WIRES BETWEEN THE FLUSH MOTOR AND THE TIMER UNIT WERE BROKEN. IT WAS NOTED THAT MINOR ARCH/BURNING OF THE WIRES HAD OCCURRED. ALL 4 WIRES AND PINS WERE REPLACED AND SYSTEM WAS TESTED SERVICEABLE.