Editing PowerBook 100 Capacitor Replacement Guide (section)

== Capacitor list ==

=== Logic board (PU-58) ===
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''PU-58 logic board electrolytic capacitors'''
! Ref !! Capacitance !! Voltage !! Type (MacDat) !! Console5
|-
| C6 || 47 µF || 16 V || Surface mount || Listed as polymer
|-
| C11 || 1 µF || 50 V || Surface mount ||
|-
| C12 || 1 µF || 50 V || Surface mount ||
|-
| C13 || 10 µF || 16 V || Surface mount ||
|-
| C20 || 10 µF || 16 V || Surface mount ||
|-
| C21 || 47 µF || 16 V || Surface mount || Listed as polymer
|-
| C22 || 47 µF || 35 V || Radial ||
|-
| C23 || 330 µF || 16 V || Radial ||
|-
| C24 || 47 µF || 16 V || Surface mount || Listed as polymer
|-
| C25 || 1 µF || 50 V || Surface mount ||
|-
| C26 || 1 µF || 50 V || Surface mount ||
|-
| C27 || 47 µF || 16 V || Surface mount || Listed as polymer
|-
| C30 || 100 µF || 10 V || Radial ||
|-
| C32 || 220 µF || 25 V || Radial ||
|-
| C34 || 47 µF || 16 V || Surface mount || Listed as polymer
|-
| C37 || 100 µF || 10 V || Radial ||
|-
| C38 || 100 µF || 10 V || Radial ||
|-
| C39 || 4.7 µF || 50 V || Surface mount || Listed as polymer
|-
| C42 || 10 µF || 16 V || Surface mount ||
|-
| C43 || 1 µF || 50 V || Surface mount ||
|-
| C102 || 10 µF || 16 V || Surface mount ||
|-
| C104 || 10 µF || 16 V || Surface mount ||
|}
Designators and values are Console5's; the type column is MacDat's, matched by value. The two lists agree on the count of every value: 22 capacitors in all.<ref name="c5" /><ref name="md" />

Console5 marks six of these as factory polymer parts that need not be replaced, and leaves them out of its kit. Owners dispute this. 3lectr1cPPC states that the 47 µF 16 V parts are electrolytics that leak, and suspects only C39 may be polymer; imactheknife has found all of them to be electrolytic and leaking on several boards; MacDat lists all six as surface-mount electrolytics.<ref name="poly">68kMLA forum thread [https://68kmla.org/bb/threads/powerbook-100-factory-polymer-caps.50817/ "Powerbook 100 - factory polymer caps?"], September 2025. JC8080: Console5's kit omits six caps it calls polymer; Pilgrim33 and ObeyDaleks replaced all of them, ObeyDaleks seeing corrosion under the parts in question; 3lectr1cPPC: the 47 µF 16 V parts are electrolytic and leak, only one inverter capacitor is polymer, the 4.7 µF 50 V part may be polymer; finkmac: trust MacDat over Console5; imactheknife: all electrolytic, all leak. Community experience.</ref> Replace all 22.

C22 is part of the circuit that makes the LCD drive voltage; alexGS replaces it first on boards with a blank screen.<ref name="vee">68kMLA forum thread [https://68kmla.org/bb/threads/powerbook-100-display-lcd_vee-issue-but-inductors-ok.49563/ "PowerBook 100 display, LCD_VEE issue but inductors ok?"], March-May 2025. alexGS: replace C22 first, then the eight 3.3 µF LCD capacitors; finkmac: about −22 V is needed at LCD_VEE (test point TP055). Community repair reports.</ref>

=== CPU daughterboard (IF-54) ===
One capacitor, C310, 10 µF 16 V, surface mount.<ref name="c5" /><ref name="md" /> Pilgrim33 cleared a sad Mac (0000000E 0000FF00) by replacing it.<ref name="sad">68kMLA forum thread [https://68kmla.org/bb/threads/powerbook-100-sad-mac-bus-failure-conundrum.50000/ "PowerBook 100 sad Mac bus failure conundrum"], May 2025. Pilgrim33: replacing the single CPU card capacitor cleared sad Mac 0000000E 0000FF00. Community repair report.</ref>

=== LCD (Sharp LM64P791) ===
[[File:PowerBook 100 Sharp LM64P791 LCD capacitor map (MacDat).jpg|thumb|350px|The eight 3.3 µF capacitors on the PowerBook 100's LCD board (MacDat)]]
Eight 3.3 µF 35 V low-profile surface-mount electrolytics, C1-C8.<ref name="c5" /><ref name="md" /> MacDat prefers tantalums to ceramics here, because ceramics lose capacitance under DC bias and have caused contrast drift.<ref name="md" /> 3lectr1cPPC has used tantalums in a PB100 without trouble; GRudolf94 questions whether tantalums are the best choice.<ref name="half">68kMLA forum thread [https://68kmla.org/bb/threads/only-half-of-screen-showing-on-powerbook-100-red-solid-color-on-rest.51183/ "Only half of screen showing on PowerBook 100 (red solid color on rest)"], December 2025. vetz: 3.3 µF 35 V tantalums on the panel; GRudolf94: tantalums might not be the best choice; 3lectr1cPPC: used tantalums on his PB100 with no ill effects so far. Community experience.</ref>

=== Inverter board ===
[[File:PowerBook 100 inverter board capacitor map (MacDat).jpg|thumb|350px|The PowerBook 100 inverter board with its two capacitors (MacDat)]]
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''Inverter board (1-466-589-11)'''
! Ref !! Value !! MacDat !! Console5
|-
| C1 || 15 µF 16 V || Radial polymer || Polymer
|-
| C4 || 47 µF 16 V || Radial electrolytic || Polymer
|}
3lectr1cPPC agrees with MacDat that only one of the two is a polymer part.<ref name="md" /><ref name="c5" /><ref name="poly" /> Replace C4.

=== Trackball (Logitech Derringer 220260-00) ===
C1 0.22 µF 50 V and C2 10 µF 16 V, both radial electrolytics.<ref name="c5" /><ref name="md" />