Repair a Commodore 64 in just 64 Months!!
summary
Claims a thrift-store Commodore 64 goes from dead to booting after 64 Months of intermittent work documenting steps and dead ends; shows measurement with an oscilloscope and logic probe to find a noisy U31 clock and a reset line stuck low; replaces a bad U31 and later a replacement PLA to restore CPU activity while SID audio remains dead; cites online archives and projects like mr. fpga and Ray Carlson’s documentation as how modern hobbyists recreate missing custom chips.
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chapters (8)
- 0:00Introduction to the C64
- 1:18Architecture and motivation
- 3:42Repairability of old tech
- 7:22Initial repair attempts
- 11:50Diagnostic methodology
- 16:06Identifying the video issue
- 18:06Solving the reset failure
- 21:55Preservation and legacy
