As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - LOST LIGHTING ON FIRST OFFICER'S SIDE, FLIGHT INSTRUMENTS WITH STRONG ELECTRICAL BURNING SMELL OCCURRING DURING FAILURE. REPLACED POWER SUPPLY AND LIGHTING, OPS CHECKED GOOD. REMOVED POWER SUPPLY, HAD STRONG BURNED ODOR. AIRCRAFT RETURNED TO SERVICE.