As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT EMERGENCY LIGHTS FROM ROW 30 ON FLICKERED AND BLINKED LIGHTS ON THE CEILING AND EXIT PANEL FLICKERED AROUND THE 2R AS WELL. ALL FLICKERING STOPPED AFTER APPROX 15-20 MIN. FOUND EMERG EXIT POWER SUPPLY M1672 TEST BUTTON BROKEN. REPLACED SAME REF B737 AMM 33-51. AC OK FOR SVC. (LOG 8464584)