I just wanted to revive this thread with something I’ve been working on for the Macintosh Portable CR-76E / M5136 power board.
I’ve recreated the original power PCB as a 1:1 drop-in replacement for the Sony CR-76E board, and made the design available on GitHub here: https://github.com/daanvdl/macintosh-portable-cr76e-powerboard
That repository includes:
A recreated PCB you can use to replace a damaged or leaky original board.
The complete reverse-engineered Bill of Materials (BOM) for the board — useful if you’re planning to populate or order parts.
Hopefully this helps anyone restoring these original adapters or trying to understand the board layout better!
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