As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNIT WORKS ONLY IN WX MODE. UNIT WOULD NOT COME ON. FOUND CORROSION CAUSED BY WATER DAMAGE. FOUND BLOWN RESISTOR ON HV SWEEP CARD. FOUND BAD TRACKS AND CONNECTIONS ON MAIN CONNECTOR. FOUND BAD FLYBACK. ACTION TAKEN: REPLACED ALL BAD PARTS, ALIGNED & TESTED UNIT