Why doesn't film eject fully from polaroid 0ne600

hi, i resurrected this camera which used to work fine but when i put new film in and take a photo the picture will only come half way out. I have pulled the pics out and nothing is developing (pictures now white all over). There are some lines on the picture across the middle - where it gets stuck I guess, but nothing else develops. Does anyone have any ideas - should i jsut buy a new one ? thanks in advance