What was found
FOUND COCF EXISTING FAULT MSG SHOWN:33-11205 CLASS 05-DOOR3 LH PRIME WELS CONTROL UNIT HAS AN INTERNAL FAULT AND 33-11405 CLASS 05-DOOR3 LH PRIME WELS CONTROL UNIT BATTERY POWER IS FAILED REF HAECO NON-ROUTINE LP:9460946 - ORIGINATED BY EMP V903179,EA 4400 -01112 REV A OP001. PERFORMED BY EMP V903179,PERFORMED T/S FOUND THE CLASS 05-WBU FA ILED AND REPLACED THE WBU THEN PERFORMED INSTALLATION TEST THE R ESULT FOUND NORMAL REFER AMM 33-51-07-02B-520A/720A-A REV 152.