As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WILL NOT SELF-TEST. FOUND IDENT LIGHT VERY DIM. REPLACED PHOTOCELL V301. REPAIRED. REPLACED DETERIORATED RESISTOR R477. INSTALLED HEAT SINK BEHIND TRANSISTOR Q415 AS PER SERVICE BULLETIN KT76A-6. UNIT HAD WEAK POWER OUT. REPLACED CAVITY TUBE V101. REPAIRED.ADJUSTED PULSE WIDTH. CLEANED CONTACTS ON WAFERS FOR FREQUENCY SELECTOR KNOBS. UNIT BENCH CHECK GOOD.