Reviving an old post because this is the only topic I could find. I also had a rattle noise so I decided to open up the shell. Found out there was an extra screw rattling around inside, not attached to anything. It was one of the smaller screws used to attach the PCB to the shell, but all those points were already screwed down, so I guess it was dropped in by accident during manufacturing.
That’s pretty bad, makes you wonder how well checked they are before they leave the factory. Good thing you found it before it caused a short circuit inside, it could have gotten stuck in a circuit board and caused major issues or intermittent issues. My first 67i had one pixel that always looked like a white dot or spec of dust right out of the box brand new. Not very well checked either.
