Capacitor Reference - Macintosh II

There were two logic board revisions of the Macintosh II. Rev. A used axial capacitors, which are fairly robust and don't often fail. The Rev. B board switched to surface-mount electrolytic caps, which always fail and leak. Any Rev. B Mac II should be recapped.


Logic Board (Rev A)

Some boards may be missing two of the 47uf 16v capacitors.

Value Count Type
470uf 16v 3 Axial Electrolytic
220uf 16v 1 Axial Electrolytic
47uf 16v 7 Axial Electrolytic

Reference Image

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Logic Board (Rev B)

Value Count Type
470uf 16v 3 Axial Electrolytic
220uf 16v 1 Axial Electrolytic
47uf 16v 13 Surface-Mount Electrolytic
10uf 16v 1 Axial Electrolytic - can be replaced with SMD as pads for an SMD cap are available

Reference Image

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