MacDat - Capacitor Reference Library

Capacitor Reference - Macintosh IIsi

The logic board and power supply in the IIsi must be recapped.


Reference Values

Logic Board

Value Count Type
220uf 16v 2 Axial Electrolytic
47uf 16v 11 Surface-Mount Electrolytic

Power Supply (Sony APS-06)

Value Count Type
2200uf 6.3v 2 Radial Electrolytic
1200uf 16v 2 Radial Electrolytic
220uf 250v 2 Radial Electrolytic
220uf 16v 2 Radial Electrolytic
100uf 25v 1 Radial Electrolytic
100uf 10v 1 Radial Electrolytic
56uf 35v 1 Radial Electrolytic
47uf 25v 1 Radial Electrolytic
4.7uf 400v 1 Radial Electrolytic

Power Supply Daughtercard

The IIsi's PSU has a daughtercard with two SMD caps on it, which leak.

Value Count Type
100uf 6.3v 1 Surface-Mount Electrolytic
33uf 25v 1 Surface-Mount Electrolytic

Reference Image (Logic Board)

Click image below to view the full-resolution version.



Page last updated (MM/DD/YYYY): 10/12/2025
Update Reason: formatting updated, added psu reference

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