I have one of these drives doing the same caddy eject thing. It probably is a cap issue. Oddly enough, the caps look fine and there's no obvious leakage on the component side of the board, but there's a real mess on the underside of the board around each set of caps. I can't quite figure out how it got there. The board mounts with components facing down, so maybe the electrolyte evaporates and then condenses on the other side?