As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: OVERWING EMERGENCY EXIT LIGHTS FLICKER IN ARMED POSITION IN FLIGHT. MAINTENANCE TROUBLESHOT PER TSM 33-51-00-810-819A AND REPLACED REPLACED DIODE MOUNT 1158VD. A SATISFACTORY OPERATIONAL TEST OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED AND NO FLICKERING WAS NOTED.