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MacAttack

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  1. MacAttack

    Macintosh 128k Video Problem

    So I want to replace the ram. I thought these chips would work. Any objections? https://www.jameco.com/z/4164-150-Major-Brands-64KX1-DIP-16-DRAM-150NS_41662.html?CID=GOOG&gclid=EAIaIQobChMI4JOMn5T02QIViV5-Ch09NgcCEAQYASABEgJPYfD_BwE
  2. MacAttack

    Macintosh 128k Video Problem

    No, not myself so I guess it could be bad ram, but I'm just going off what the seller said. Anyways, I will test the Mac Plus board in it too.
  3. MacAttack

    Macintosh 128k Video Problem

    The ram has been socketed and replaced so I ruled that out and the Mac plus board is not compatible with the 128k case
  4. MacAttack

    Macintosh 128k Video Problem

    Hello, I recently bought a 128k Mac (non-functioning) and the seller told me that he thought that the 74F253 Ram Multiplexers were bad. But after replacing them with new Motorola ones, the screen still has the same issue. Here is a photo: I have no idea where to got from this point and a google search came up inconclusive. Please Help!!
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