Editing Sinclair ZX Spectrum+ Capacitor Replacement Guide (section)

== Replacement procedure ==

# Unplug the power and open the case; disconnect the keyboard tails carefully.
# Record the value, voltage and '''polarity''' of each electrolytic before removal.
# Add fresh flux and solder to both joints and let it mix with the old solder.
# Lift one lead at a time with the joint fully molten, then clear the hole with wick.
# Fit the replacement the correct way round, solder and trim.
# Inspect for bridges and splatter before reassembly.