As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VHF TRANSCEIVER WEAK RECEIVE. COULD NOT DUPLICATE PROBLEM OF WEAK RECEIVE BUT FOUND RECEIVER COMPRESSOR NOT WORKING. REPLACED BAD I303 IC CHIP. REPAIRED. REMOVED CORROSION FROM UNIT. ADJUSTED C/N SQUELCH, MIC GAIN, TRANSMIT COMPRESSOR AND SIDETONE. UNIT BENCH CHECK GOOD.