What was found
APU FAILED TO START (3 ATTEMPTS) APU INOPERABLE, DOOR CLOSED. TRANS TO DMI 137350, PER MEL 49-11-01B CAT "B" DUE 09NOV20 DISP T/R 2154Z SP 07NOV20. T/S APU AND FOUND APU STARTER INOPERABLE. REMOVED AND REPLACED APU STARTER, IAW AMM 49-41-01. OPERATIONS TEST OK AND CLEARS DMI 137350. PLACARD REMOVED.