Editing Atari 130XE Capacitor Replacement Guide (section)

== Capacitor Replacement Procedure ==

# '''Disassemble:''' Remove the five case screws from underneath, then gently lift the top case. Carefully disconnect the keyboard flex cable from the mainboard connector.
# '''Remove the mainboard:''' Unscrew the PCB mounting screws and lift out the board, noting the orientation of all connectors and any grounding springs.
# '''Photograph the board''' before desoldering — document capacitor orientations and any markings.
# '''Desolder old capacitors:''' Use solder wick and/or a desoldering pump. Apply fresh solder first if joints are dry. Take care not to lift pads, especially on single-sided sections of the board.
# '''Clean pads:''' Remove old flux and any leaked electrolyte using isopropyl alcohol and a brush.
# '''Inspect for trace damage:''' Leaked electrolyte can corrode PCB traces. Repair any broken traces with fine wire.
# '''Install new capacitors:''' Observe '''polarity''' carefully — the stripe on the capacitor body marks the '''negative''' lead; the silkscreen usually marks the negative pad with a filled area or minus sign. Use low-ESR, 105°C rated parts.
# '''Solder with care:''' Use a fine tip at 300–340°C. Ensure solid, shiny joints. Avoid excessive heat on the pads.
# '''Trim leads''' flush with the board.
# '''Inspect:''' Check for solder bridges, correct orientation, and any missed joints.
# '''Reassemble:''' Fit the board back, reconnect keyboard, close the case.