What was found
INSPECTION TYPE:N/A, DURING FLIGHT F/O EADI SCREEN WENT BLANK FOR APPROX 5 SEC FOLLOWED BY LOUD POP SOUND AND SPARKS VISIBLE DROPPING BEHIND PANEL AT F/O RUDDER PEDDLES. EADI SCREEN RETURNED TO NORMAL AND ACURID SMELL OF SMOKE IN COCKPIT FOLLOWED. PULLED EADI AND EHSI C/B''S ON F/O SIDE AS PRECAUTIONARY. INSPECTED AND NO SIGNS OF BURNING, ARCHING, DAMAGE. REMOVED AND REPLACED F/O''S EADI, EHSI AND NR 2 DPUA AS PRECAUTIONARY.