As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INOPERATIVE. FOUND REPLY LIGHT TO BE DIM. REPLACED PHOTOCELL V301. REPAIRED. REPLACED DETERIORATED RESISTOR R477. FOUND INTERMITTENT PULSES ON OSCILLOSCOPE WHEN DIALING THROUGH FREQUENCIES. CLEANED CONTACTS ON ALL WAFERS. REPAIRED. BENCH CHECK GOOD.