Capacitor Reference - PowerBook 150
The PowerBook 150 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. Failing inverter board caps can introduce inconsistent backlight/contrast behavior even after the LCD itself has been recapped.
The LCD 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.
Reference Values
LCD
PowerBook 150 LCDs were sourced from two vendors - Sharp and Casio. Despite this, both use the same capacitors.
| Value | Count | Type |
|---|---|---|
| 3.3uf 35v | 8 | Low Profile Surface-Mount Electrolytic |
Backlight Inverter Board
| Value | Count | Type |
|---|---|---|
| 47uf 25v | 1 | Radial Electrolytic |
Trackball
| Value | Count | Type |
|---|---|---|
| 10uf 16v | 1 | Radial Electrolytic |
Reference Images
Click on an image to view the full-size version of it.
LCD (Casio)
LCD (Sharp)
Photo provided by oldcrap.org
Backlight Inverter Board
Trackball
Photo provided by @GRudolf94 on 68kMLA.org
Page last updated (MM/DD/YYYY): 09/30/2024
Update Reason: formatting updated, sharp lcd photo added
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