Editing Psion Organiser Capacitor Replacement Guide (section)

== Replacement procedure ==

# '''Remove the battery''' and both Datapaks.
# '''Slide off the protective cover''', open the case and separate the power board, noting the ribbon and pin-header orientation.
# '''Record each capacitor's value, voltage and polarity before removing it''', cross-checked against the silkscreen "+" marks.
# Work on a supported board. Add fresh flux and a little fresh solder to each joint and let it mix with the old solder before removing anything.
# '''Lift one lead at a time with the joint fully molten''', then clear the hole with wick. The board is single-thickness and the pads will lift if you fight them.
# Fit the replacement the correct way round; solder and trim.
# '''Inspect for splatter and bridges''' before reassembly — a hairline bridge measuring a few ohms produces very misleading faults.

Use a '''low-power, earthed, temperature-controlled iron'''. Nothing on this board needs a large tip.