Capacitor Reference - PowerBook 145
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, the trackball, and the display inverter board. The inverter board has two notable caps on it, but only one is actually a candidate for replacement. The purple colored one is a solid polymer cap that rarely fails.
The display capacitors are frequently replaced 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.
LCD
- 1x 100uf 6v (SMD)
- 1x 22uf 35v (SMD)
- 9x 3.3uf 35v (SMD)
LCD Inverter Board
- 1x 47uf 16v (Radial Through-Hole)
- 1x 33uf 10v (OS-CON Solid Polymer - does not need replacement) (Radial Through-hole)
Trackball
- 1x 10uf 16v (Radial Through-Hole)
Reference Images
Click on an image to view the full-size version of it.
Trackball photo provided by @GRudolf94 on 68kMLA.org
Page last updated (MM/DD/YYYY): 04/21/2024
Update Reason: added newnav
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