Editing Psion Organiser Capacitor Replacement Guide (section)

== Where the capacitors are ==

The Organiser is built as two boards.<ref name="galp1">[https://www.jaapsch.net/psion/galp1.htm Psion Organiser Series 1 Image Gallery], Jaap's Psion Organiser II Page. The board construction, silkscreen legends and visible designators described here are read from the internal photographs published there.</ref>

{| class="wikitable styled-table" style="width:100%; text-align:left;"
! Board !! Construction !! Capacitors
|-
| '''"PSION PROCESSOR"''' || Surface-mount: HD6301X0F CPU, HD44780A00H LCD controller, HEF-series CMOS glue logic, two crystals || Chip ceramics only — crystal load capacitors and supply decoupling. '''Not a recap candidate.'''
|-
| '''"PSION POWER"''' || Through-hole leaded: LM324N at IC1, TO-92 transistors, quarter-watt resistors, VR1 contrast thumbwheel, RD1 reference diode, ZN1 zener || '''All the electrolytics in the machine.''' Designators visible on the silkscreen include '''C1, C3, C5, C6, C8, C9 and C10'''.
|}

This split is good news: the parts that age are all on the leaded board, and leaded parts are easy to desolder, easy to measure and easy to buy.