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
Read postCase Studies in Retro Computer Repair (#9): Diagnosing and Fixing a Commodore 64 with Intermittent Black Screen and Nonworking Keyboard by Reflowing Cold Solder Joints
Disclosure: Note that as an eBay Partner Network Affiliate, I may earn from qualifying purchases. Introduction This Commodore 64 with a 250407 Revision B board came in a lot six nonworking computers that I purchased from eBay. This one seemed to boot but was flaky and would sometimes crash or
Read postCase Studies in Retro Computer Repair (#4): Diagnosing and Fixing a Commodore 64 with Keys that Don’t Work and no Sound
Introduction This Commodore 64 came in a lot of six I purchased off eBay. All were listed as not working. This c64 booted up just fine but had some key that did not work (e.g. space and return) and had no sound. Otherwise, it seemed like it was in good
Read postCase Studies in Retro Computer Repair (#1): Diagnosing and Fixing a Commodore 64 with a Bad MOS 7708 Multiplexer Resulting in a Black Screen
Disclosure: Note that as an eBay Partner Network Affiliate, I may earn from qualifying purchases. Introduction I purchased the following Commodore 64 on eBay for $90. The seller said it was not working and had tried to repair it with a GAL PLA. He further said it booted to a
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