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19:56, 17 April 2025 Josh talk contribs created page Commodore PET 4000 Series Maintenance Guide (Created page with "thumb|376x376px|Commodore PET 4032 with top panel lifted. Proper maintenance of the '''Commodore PET 4000 Series''' is essential to preserve functionality and prevent age-related failures. This guide covers cleaning, keyboard servicing, capacitor replacement, power supply care, and CRT-specific issues unique to these systems. == 🧼 Regular Cleaning == The PET 4000 Series features a hinged metal chassis for easy internal acce...")