I have a Sony DSC-HX30V and there was sand in the lens gears. I disassembled the camera, cleaned the lens and put it together. It didn't turn on. I have tried tons of things and not sure what happened.
Really frustrating. I don't get ANY 'error' or anything, camera completely dead. I could buy a new lens unit which maybe was the problem but man...don't want to throw good money after bad, but don't want to trash camera if its on the verge of working.