As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TROUBLESHOOTING, INTERMITTENT RADIO OPERATION FOUND AVIONIC POWER RELAY TERMINAL NR 2 IN VERY DETERIORATED CONDITION DUE TO OVER HEATING. ADJACENT WIRING WAS ALSO DAMAGED. SUSPECT CORROSION ON TERMINAL. SUBMITTER STATED DUE TO LOCATION IN AN AREA PRONE TO MOISTURE, RECOMMEND SEALING TERMINALS WITH RTV.