As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLANK SCREEN. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT DRAWS EXCESSIVE CURRENT. REPLACED Q4204, Q4205 TRANSISTORS ON POWER SUPPLY. REPAIRED. FOUND RED AND YELLOW COLORS IN NOISE BAND. REPLACED IC U1402, U1403, U1406. REPAIRED. BENCH CHECK GOOD.