As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO OUTPUT; WILL NOT REPLY TO INTERROGATIONS FROM ATC600 OR GROUND CONTROL. VERIFIED UNIT TO HAVE WEAK POWER AND OFF FREQUENCY. REPLACED CAVITY OSCILLATOR V101. REPAIRED. UNIT HAS WEAK RECEIVER SENSE. REPLACED MIXER DIODE CR202. REPAIRED. ALIGNED RECEIVER. BENCH CHECK GOOD.