I had a Sampo 661 shipped over from the U.S. The loader went wrong so I have put a new loader in it. I went to watch Fast and furious last night and it will not play properly.The picture gets lots of little squares on it and the play wont respond to any commands except on/off. I also cannot play A.I ,I get a black screen and intermitent sound. Other discs I have tried work fine,any-one got any ideas? :(