As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH 4000 FEET ON CLIMB-OUT L26AC, R26AC, PRIMARY, SECONDARY AND AUX INVERTER CAUTION LIGHTS WITH TERRAIN INOP AND GPWS CAUTION LIGHTS ILLUMINATED. DURING CHECKLIST UPON SWITCHING AUX INVERTER TO RIGHT AFTER 45 SECONDS ALL LIGHTS EXTINGUISHED. REMOVED AND REPLACED SECONDARY INVERTER.