Editing Atari 800XE Capacitor Replacement Guide (section)

=== Step-by-Step Procedure ===

# '''Disassemble the 800XE:''' Remove the five case screws from underneath. Gently lift the top case. Disconnect the keyboard membrane cable.
# '''Remove the mainboard:''' Unscrew the PCB mounting screws. Carefully lift out the board, noting the orientation of all connectors and any shielding.
# '''Remove the RF shield''' (if present) to access all capacitors.
# '''Document the board:''' Photograph the board before starting — note the orientation (polarity stripe) of each electrolytic capacitor.
# '''Desolder old capacitors:''' Heat each lead from the underside and use a desoldering pump or wick to remove solder. Gently pull the capacitor free once both leads are clear. '''Do not force''' — you risk lifting pads.
# '''Clean the pads:''' Remove old flux and any leaked electrolyte residue using IPA and a brush. Inspect pads and nearby traces for corrosion damage.
# '''Install new capacitors:''' Observe '''correct polarity''' — the longer lead is positive; the silkscreen typically marks the negative (–) pad with a stripe or filled half-circle. Insert the new capacitor, bend leads slightly to hold it in place, and solder from the underside.
# '''Trim leads:''' Cut flush with the solder joint using side cutters.
# '''Inspect all joints:''' Check for solder bridges, cold joints, or missed connections.
# '''Reassemble:''' Refit the RF shield, mainboard, keyboard cable, and case.