As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - FLIGHT CREW NOTICED SMOKE IN COCKPIT, SMELL AND VISUALLY WHILE AWAITING PUSHBACK. INSTRUMENT AMPLIFIER CIRCUIT BREAKER POPPED. INSTRUMENT AMPLIFIER REPLACED AND AMPLIFIER OPS CHECKED GOOD. NO SMOKE NOTED. AIRCRAFT RETURNED TO SERVICE.