As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, THE GPS BECAME BLANK WITHOUT ANY INDICATION OR WARNING BLANK PAGE. THE ACFT DID A 90 DEGREE TURN AND RETURN TO DEPARTURE POINT. AFTER SHUTTING OFF THE MASTER THE DISPLAY CAME BACK NORMAL. GARMIN HAS BEEN ADVISED AND A NEW GPS HAS BEEN INSTALLED.