Editing Nintendo 64 Maintenance Guide (section)

== Common Failure Points ==

=== Cartridge Slot Wear ===
* Frequent cartridge swaps can loosen or oxidise the slot, causing boot failures or glitches.
* Clean and, if needed, gently re-tension contacts.

=== Expansion Pak Issues ===
* Poor contact or corrosion causes boot errors (flashing red LED, no video).
* Remove and reseat the Expansion Pak; clean contacts as above.

=== Power Switch Failure ===
* Internal corrosion or wear can cause intermittent power.
* Disassemble and clean with contact cleaner, or replace the switch if necessary.

=== Video/Audio Output Problems ===
* AV Multi-Out port may develop dry joints or corrosion.
* Reflow solder joints and clean contacts if video/audio drops out.

=== Controller Port Failures ===
* Broken or oxidised pins can cause controller detection issues.
* Inspect and clean; replace damaged ports if necessary.