As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT FL 370 A STRONG ODOR OF BURNING PLASTIC. FOLLOWED BY FWD EQUIPMENT EXHAUST FAN C/B POPPING AND FWD EQUIPMENT EXIT FAN STATUS MSG. REPLACED FWD EQUIPMENT EXHAUST FAN PER MM. OPS CHECK NORMAL. S/N OFF 1529, S/N ON 5586A, P/N 211002542.