Editing Atari Falcon Troubleshooting Guide (section)

== PSU Troubleshooting ==

The Falcon PSU is the most common single point of failure. Symptoms of a failing PSU:

* '''Gradual voltage drift''' — +5V rail climbing above 5.2V over months/years as capacitors degrade
* '''Intermittent reboots''' — Power dips under load when capacitors can no longer supply peak current
* '''Complete failure''' — No output after capacitors short or open

=== Emergency Diagnostic ===

If the Falcon is completely dead:
# Check the mains fuse in the IEC inlet.
# Disconnect the PSU from the motherboard.
# Power on the PSU alone and measure output voltages.
# If no output, check the primary-side bulk capacitor and bridge rectifier.
# If output is present but out of spec, recap the PSU (see [[Atari Falcon Capacitor Replacement Guide]]).