As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4292 AT 20,000 FEET, THE CREW REPORTED A MASTER CAUTION IC BUS BAR FAILED. THE CREW SMELLED FUMES OF BURNING ELECTRONICS. THE FIRST OFFICER’S PRIMARY FLIGHT DISPLAY AND THE MULTI-FUNCTION DISPLAY FAILED. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED THE NUMBER 2 IC 600 IAW EMB AMM 31-42-01. PERFORMED OPERATIONAL CHECK IAW EMB AMM 31-42-00 OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.