As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AURAL WARNING WILL COME ON WHEN STANDBY SWITCH TURNED OFF. TRIED SWAPPING POWER SUPPLY AND TRIED NEW LANDING CONFIG WARNING MODULE M983, NO HELP. TAKEOFF CONFIG WARNING TEST FAILED ON WARN ELEX-A. REPLACED M620 TAKE OFF CONFIGURATION CARD. CHECKED OKAY.