What was found
SEVERAL ANNUNCIATIONS ON OVHD PANEL CENTER INSTRUMENT PANEL AND MCP. WOULD REF WDM 31-52-75 AND IF NO FAULTS. REPLACE R33/R34 AS A PRECAUTION. GND TESTED OK AFTER ARRIVAL, REPLACED R33, MASTER TEST RELAY, AND R34, MASTER DIM RELAY. PERFORMED OP TESTED OK IAW AMM TASK 33-18-00-710-802. REPLACED M564, MASTER DIM/TEST MODULE AS A PRECAUTION.. GND CHK OK IAW AMM TASK 33-18-00-710-802.