As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LED DISPLAY INOPERATIVE. REPLACED DS901. STILL HAD INTERMITTENT DISPLAY WHEN BOTTOM OF UNIT PRESSED ON. FOUND THAT MOVEMENT OF Q507 TRANSISTOR CAUSED DISPLAY TO FLICKER. RESOLDERED Q507 TRANSISTOR AND REPAIRED PROBLEM. UNIT BENCH CHECK GOOD.