Hi, My NH900 minidisc recorder was flicked off a table onto a tile floor. Now, it won't play. Also, it'll act like it's recording, but once it writes to the disc, it exhibits the same behavior as playing. That is, it clicks, but nothing happens. I assume the shock dislodged something or sent the play/record head out of calibration. Can you please suggest something I could do to try to fix this? I downloaded the service manual, but though I'd ask before taking it apart. Thanks very much for your help. Joel