What was found
WHILE PERFORMING TC 78233001 , FOUND R1/R2 OUTSIDE AFT DOOR , RH AFT WING , RH AFT UNDER WING , L1 AFT DOOR OUTSIDE , L1 OVERHEAD INSIDE , LH AFT WING , LH AFT UNDER WING , ALL INSIDE WING EXIT DOOR , AND R2 INSIDE SMALL GALLEY LIGHTS INOP BEFORE 15 MINUTES. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY ASSY M1670, M1671, M1676, M1694, M1695 M2335 AND M1675 REF BOEING AMM TASK 33-51-06-960-806. INSTALLATION TEST GOOD WITH ALL LIGHTS ILLUMINATING AS REQUIRED. NO FURTHER DEFECTS.