As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FUSE (GMW1) HAS POPPED ON THREE DIFFERENT COMPANY B200 AIRCRAFT. FUSE PROJECTS 28 VDC OUTPUT CIRCUIT FROM THE EFIS STANDBY POWER SUPPLY (WIRES W3203-2 AND W3204-4). HAVE SUBMITTED QUERY TO RAYTHEON TECH SUPPORT FOR RECTIFICATION.