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mac 128k

  1. Deafboy123

    Mac 128k external drive issue

    Hi All, My first post! I have an original Mac 128k with external 400k drives. In fact I two external 400k drives (Sony OA-D34V-22). Obviously, I can only use one at a time on this Mac. One of them works fine, the other has an issue. Maybe someone can assist me to debug it. I cleaned and...
  2. B

    Error code 0F0002 after identifying faulty RAM chips on Macintosh 128k

    I recently acquired a M0001 Machintosh 128k and am trying to repair it. On power, it gave a sad mac 04 RAM error code that identified faulty RAM chips. I identified them and piggyback new ICs (I have yet to replace them). Afterward, the sad mac code changed to 0F0002 which apparently means...
  3. J

    Macintosh 128k No Chime and Strange Sounds. Need Help to Restore.

    I am the original owner of a 128k Mac from my first year at Drexel University in 1985. I am trying to restore it back to operating condition. When I powered it up I got the Chime and then the Sad Mac Icon with code 040820 was displayed with a good quality screen picture. So I replaced RAM...