Capacitor Reference - PowerBook 145/145B

The PowerBook 145 has no electrolytic capacitors on the logic board. This means that the only caps you will have to replace will be those on the display, and the display inverter board. There is also a cap on the trackball, but it rarely fails.

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LCD

Many people end up replacing the display caps with ceramic capacitors. These may work, but have been shown to result in drifting contrast on certain LCD displays. This is caused by ceramic capacitors' characteristic where the capacitance varies based on voltage load. As such, I would recommend replacing them with tantalum caps instead.

Value	Count	Type
100uf 6v	1	Surface-Mount Electrolytic
22uf 35v	1	Surface-Mount Electrolytic
3.3uf 35v	9	Surface-Mount Electrolytic

Reference Image

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Backlight Inverter Board

The polymer cap rarely fails and doesn't require replacement.

Value	Count	Type
47uf 16v	1	Low Profile Radial Electrolytic
33uf 10v	1	Low Profile Radial Polymer

Reference Image

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Trackball

Value	Count	Type
10uf 16v	1	Radial Electrolytic

Reference Image

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Photo provided by @GRudolf94 on 68kMLA.org