Editing Atari 800 General Maintenance (section)

== Quick-Fix Flowcharts ==

=== No Video / No Power ===
* Check PSU output → OK?
* Confirm power switch continuity.
* Measure +5V and +12V rails at mainboard.
* If dead, suspect voltage regulators or main filter capacitors.
* If power LED is on but no video, check RF modulator and video output path.

=== Boot Errors / Memory Failures ===
* Run built-in self-test (hold OPTION on power-up).
* If RAM errors, re-seat RAM modules and clean contacts.
* Swap suspect RAM cards with known-good modules.
* If persistent, check for corroded sockets or failed RAM ICs.

=== Keyboard Not Responding ===
* Inspect ribbon cable for breaks.
* Clean keyboard connector and re-seat.
* Test individual key switches with continuity meter.

=== Cartridge Not Detected ===
* Clean cartridge edge and slot contacts.
* Inspect for bent or missing pins.
* Try alternate cartridge slot.