As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING RUN UP, MAGETO FAILED TEST. LESS THAN 1 HR OPERATION AFTER OVERHAULED MAGETOS INSTALLED. DURING INSPECTION FOUND THE CAPACITOR LOOSE IN HOUSING AND COIL WIRE LOOSE AND MAGETO SET IN E GAP. REMOVED OTHER MAG AS A PRECAUTION AND FOUND ITS COIL WIRE LOOSE AND ALSO SET IN E GAP. CORRECTED THE ISSUE AND REINSTALLED MAGS, OPS CHECKED OK.