As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB/ CRUISE/ DESCENT THE FMC P/RST LIGHT ILLUMINATED AT RANDOM TIMES WITHOUT A FMC SCRATCH PAD MSG. MOST OF THE TIME IT WAS ONLY ONE (CA SIDE OR FO SIDE) AT ANYTIME. OCCASIONALLY BOTH ILLUMINATED AT THE SAME TIME. AT THE TOP OF DESCENT THE CA FMC P/RST LIGHT FLICKERED FROM DIM TO BRIGHT SEVERAL TIMES. GROUNDED - YES. REPLACED #1 FMC REF B737-900 AMM 34-61-02/401. ALL INSTALLATION TESTS AND ADJUSTMENTS COMPLETE WITH NO FAULTS FOUND.