What was found
THE CREW REPORTED EICAS DISPLAY BLANKED DURING CRUISE AT FL320, PM (FO SIDE) WENT TO REVERSIONARY ON MFD, EICAS DISPLAYED, THEN APPROX 3 MIN LATER, SWITCHED BACK TO NORM ON REVERSIONARY PANEL AND EICAS CAME BACK UP AND FUNCTIONED NORMALLY. MAINTENANCE WILL REPLACE THE DISPLAY UPON PART DELIVERY.