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  1. K

    Fried Macintosh 512k motherboard.

    I did something stupid :( You know the type of fly back transformers that don't have the bleeder resistor? That caused a big problem for a motherboard that was working fine. I unscrewed the groud wire from the crt and discharged the crt with it. There was a big arc and it was safe to remove...
  2. K

    Prototype Mac 512k motherboard yellow paint?

    Today I recieved a motherboard that has some very interesting characteristics. Something I have never seen before leading me to believe it's a late prototype. As you can see form the pictures it has yellow paint instead of the normal white paint marking what chips go where and what component is...
  3. K

    Mac 128k help needed!

    Hello everyone! I have a bit of a problem with my new Mac 128. Everything is beautiful on the inside and out but the issue with it is I'm getting that error code. Can someone help me pinpoint the trouble ram chip? I am experienced in soldering and I have sockets for new a new ram chip but the...
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