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Tag: Case Study 10

Case Studies in Retro Computer Repair (#10): Diagnosing and Fixing a Commodore 64 with a Garbled Screen by Reseating the VIC-II Video Chip

March 21, 2025 moorejh28@gmail.com Hardware, Repair

Disclosure: Note that as an eBay Partner Network Affiliate, I may earn from qualifying purchases. Introduction I purchased this very nice Commodore 64 off eBay. It was listed as not working and sold for parts. It has a clean 250407 Revision B board and boots to a garbled screen as

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Copyright (C) 2026 Jason H. Moore, Ph.D.