What was found
THE CREW REPORTED THE PILOTS EFHSI IND FLICKERED THEN TURNED OFF WITH THE SMELL OF ELECTRICAL SMOKE JUST BEFORE IT WENT OUT. TRIED TO COPY TO THE CO-PILOTS EFHSI AND THE SAME PROBLEM OCCURRED. REPLACED THE PILOTS EFHSI AND THE SYSTEM CHECKED FINE ON THE GROUND. THE A/C WAS RELEASED, DURING A/C ROLL FOR T/O THE PILOTS EFHSI AGAIN FLICKERED AND REDUCED IN SIZE HORIZONTALLY TO THE RT HALF OF THE DISPLAY. COPY DOWN WAS THE SAME DISPLAY. THE CO-PILOTS EFHSI WAS OK. THE CREW CONTINUED ON TO BTL. THIS PROBLEM DOESN'T APPEAR RELATED TO THE ONE DETAILED IN ARR BN 29-7, WHICH CONCERNED THE CO-PILOTS EFHSI. AVIONICS BELIEVES THIS PROBLEM TO BE POSSIBLY A SYMBOL GENERATOR OR WIRING PROBLEM. THE SYMBOL GENERATOR WA