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  1. W

    Macintosh 512 case repair

    Squeeze a few drops of epoxy resin (big drops) on the back and bury some thick iron wire into the epoxy resin for reinforcement
  2. W

    Macintosh Plus Analog Board Q12 replacement

    If the old Q12 can work even for a short while, it means it is not damaged, but the parameters may have changed.Have you tried increasing R53 from 1.2 ohms to 1.7 or 2 ohms To adapt to the changes in Q12 parameters？
  3. W

    Mac Plus does not start, no bong, no screen

    Please check the voltage of capacitor C24 to confirm whether the analog board outputs 12V
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