Plan C | PLAying Around with a Black Screen eBay Commodore 64 (Fix) @Plan-C | Uploaded March 2019 | Updated October 2024, 6 hours ago.
Repair of Breadbin C64 with black screen from eBay. Tests with a PLAnkton PLA substitute and chip swapping with my test bench had me scratching my head. Pretty simple fix in the end but not what I was expecting.

The PLAnkton I used in the first part of the video is Detailed here:

https://www.polyplay.xyz/PLAnkton-PLA-Replacement

or here.

retroleum.co.uk/c64-chips

ebay.ca/itm/Commodore-64-PLA-906114-01-C64-replacement-PLAnkton/163543624270?hash=item2613f5aa4e:g:2M8AAOSw-K9ZMg7v:rk:1:pf:0

Just for info. I have no affiliation.

Good Luck All