This has saved me I hope, my Sony deck JE510 has started not recording or editing correctly, I had put a very important MD in to edit titles and then ejected and the disc then showed as being blank or in the portable showed a disc error. I really hope this works and will it work for the MZ-R70? Also, what could be the problem with my deck as to why it no longer works for recording or editing? Thanks so much for any ideas! Pablo