Editing Osborne Vixen Maintenance Guide (section)

== Capacitor Health & Replacement ==

Aging electrolytic capacitors are a primary failure point in the Vixen, especially in the PSU and on the motherboard.

=== Typical Capacitor Issues ===
* PSU: Output ripple, voltage drop, or failure to power on.
* Motherboard: Random resets, instability, or boot failure.
* Floppy drives: Read/write errors due to power noise.

{| class="wikitable styled-table" style="width:80%; text-align:center;"
! Location !! Capacitance/Voltage !! Function !! Notes
|-
| PSU output filter || 2200 µF / 16 V || +5 V smoothing || Replace with low-ESR type
|-
| PSU secondary || 470 µF / 25 V || +12 V smoothing || Replace if bulging or leaking
|-
| Motherboard bulk || 100 µF / 16 V (×2) || Local decoupling || Replace if original
|-
| Floppy drive board || 10–47 µF / 16–25 V || Motor/filter || Replace if drive is unreliable
|}

* Replace all original electrolytics if unrestored.
* Use high-quality, low-ESR capacitors for PSU and drive circuits.
* Visually inspect for bulging, leakage, or crusty deposits.