What was found
THRUST REVERSER CONTROL CIRCUIT BREAKER ON LEFT SIDE 'POPPED' WHEN REVERSERS WERE ACTUATED. TROUBLESHOOTING DETERMINED THRUST REVERSER CONTROL BOX, P/N 45A5888656-5, HAD BURNT RESISTOR AND TRANSISTOR IN THE THROTTLE T/R LOCK HOLDING SOLENOID CIRCUITS. T/R THROTTLE LOCK SOLENOID MEASURED AND FOUND RESISTANCE TO BE EXTREMELY LOW. (P/N 18578-01.) FURTHER TROUBLESHOOTING DETERMINED REVERSER DEPLOY LIMIT SWITCH TO HAVE STUCK CONTACTS THAT, CONSEQUENTLY, KEPT LOCK SOLENOID ACTUATED.