depends which peice it is,
destroy the shiny containers next to the door way to the next part of the level, then use a sith (Darth maul, Darth vadar, Count dooku, etc) use there force on the flowers next to the big doorway then destroy the plant pot, then there is some containers in the corner where you jumped up, smash them and the last bit is there, remember you need to put the bits together first, they are in the wrong corners to where they should be, so swap them, then you have to push the into some holes in there right corners, then use the force on them and then you ill get the power brick
Credit to Pity for Awsome Sig