As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN THE RAMP PRESSED THE LIGHT TEST BUTTON ON THE 108VU, SMOKE STARTED POURING OUT OF THE BACK OF THE PANEL. FOUND ADIRU AND AVNCS VENT LIGHT BODY SHORTED. NEEDS 25HQ BODY AND CAP ASSY TO FIX. NEEDS 25HQ INDICATOR LIGHT BODY AND INDICATOR CAP ASSY TO FIX. REPLACED 25HQ, TEST OKAY.