As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA REPORTS EMERGENCY LIGHT AIRCRAFT LEFT ROW 27 WOULD ILLUMINATE INTERMITTENTLY. GROUNDED - YES. FOUND POWER SUPPLY FOR 27 EMER LIGHT TO HAVE DAMAGED TEST MA29858 SWITCH REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY ASSY REF B737-900 AMM 33-51-06 OPS CHECK GOOD.