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  1. happy_Mac

    Mac Classic Checkerboard

    thx, but it doesn´t help me.
  2. happy_Mac

    Mac Classic Checkerboard

    The Analog board isnt the Problem, it just work fine
  3. happy_Mac

    Mac Classic Checkerboard

    Hello, My Macintosh shows a chess board despite recap and a new EPROM. I also cleaned the board. But when I take out the RAM expansion, the Mac shows valuable lines. Can anyone help me further?
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