Editing Atari 520STFM (section)

== Known Issues ==

* '''PSU capacitor failure:''' The internal switched-mode PSU is a common failure point. Dried-out or bulging capacitors can cause instability, failure to power on, or intermittent crashes. Recapping the PSU is a recommended preventive measure.
* '''Floppy drive failure:''' The internal drive mechanism can develop worn heads, dirty head assemblies, or failed drive belts. Cleaning or replacement may be required.
* '''Keyboard membrane degradation:''' Same issue as all ST models.
* '''RF modulator quality:''' The RF output provides a soft, somewhat blurry picture typical of the era. For best display quality, use the 13-pin DIN monitor output with a dedicated monitor or an RGB-to-SCART adapter.
* '''RAM issues:''' DRAM chips can develop faults over time, causing crashes, garbled displays, or failure to boot.